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• Web Site Serving, Cloud-Computing, oh, my

  - by Frank

  I'm planning a software based service. To give it a bit of context (type of traffic), assume it similar to facebook in nature (with a little GitHub thrown in). I've been trying to understand my different hosting options. I've been using a shared host with GoDaddy for years just fine. I currently host a Wordpress web site there and I've not had any problems. Quite frankly, they've taken good care of me. However, the nature of a shared hosting environment is limited in nature. For example, I can't do anything but host a web site there. For example, I can not run a Mercurial server. Last time I attempted to build a web application with the intention of eventually launching it via GoDaddy, I ran in to all sorts of troubles because it was shared-hosted. Assembly issues, etc. At the time, the cost and time sank my project. (The lack of direct access was also frustrating.) (to be fair to godaddy, this was over 3 years ago) I've been looking at Rackspace or Amazon as a possible cloud solution but it seems to be just processing power and bandwidth (and an OS). From what I understand, I'd need to get Apache and MySQL Working on my own. The way cloud hosting is priced, however, seems appealing. I figure my final option might be to use a virtual private host. I think this would be more flexible than a shared-host site but less scalable than a cloud based server. So, I guess my question is what is an appropriate solution for someone who intends to build a web application service? I figure that I need to establish a hosting environment now rather than later so I can plan to effectively use the environment. I'd prefer to be fairly economical to start out with. I really can't afford to pay $999 (or even $99) while I build up the site and get the core functionality online but at the same time, I'd like to have the selected environment grow as needed. Thank you.

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• Mysteriously empty $_POST array

  - by Lex

  Hi all! I have the following HTML/PHP page: <?php if(empty($_SERVER['CONTENT_TYPE'])) { $type = "application/x-www-form-urlencoded"; $_SERVER['CONTENT_TYPE'] = $type; } echo "<pre>"; var_dump($_POST); var_dump(file_get_contents("php://input")); echo "</pre>"; ?> <form method="post" action="test.php"> <input type="text" name="test[1]" /> <input type="text" name="test[2]" /> <input type="text" name="test[3]" /> <input type="submit" name="action" value="Go" /> </form> As you can see, the form will submit and the expected output is a POST array with one array in it containing the filled in values and one entry "action" with the value "Go" (the button). However, no matter what values I enter in the fields; the result is always: array(2) { ["test"]=> string(0) "" ["action"]=> string(2) "Go" } string(16) "test=&action=Go&" Somehow, the array named test is emptied, the "action" variable does make it through. I've used the Live HTTP Headers extension for Firefox to check whether the POST fields get submitted, and they do. The relevant information from Live HTTP Headers (with a, b and c filled in as values in the textboxes): Content-Type: application/x-www-form-urlencoded Content-Length: 51 test%5B1%5D=a&test%5B2%5D=b&test%5B3%5D=c&action=Go Does anybody have any idea as to why this is happening? I'm freaking out on this one, it has cost me so much time already... EDIT: We've tried this on different servers, on Windows boxes it does work, on the Ubuntu server with PHP version 5.2.4 (with Suhosin), it doesn't. It even works on a different server, also with Ubuntu and the same PHP version, also with Suhosin installed.

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• Scoping a home dev server

  - by AbhikRK

  Hi. I’m looking to build a multi-purpose home development server. In this post, I’m looking to outline what I want from such a system, and the ‘why’s of it, to some limited extent, and finally, some rudiments of how I’m looking to go about that. I’m mostly a developer, with just about some sysadmin familiarity. So, please excuse, correct me, and suggest on any ignorance which would come across in the following ;-) It will serve the following goals to start with:- NAS (Looking at using ZFS) Source control repo e.g Git server Database e.g MySQL server Continuous Integration e.g Hudson server Other stuff as and when they come up e.g RabbitMQ etc A development sandbox to play around with new stuff I want to achieve a high uptime for 2-5 as much as possible. They should run as independent services and with minimal maintenance. (e.g TurnKey Linux appliances) I’m thinking of running them as individual Xen DomUs. Then, maybe the NAS can be a Dom0 and 6 can be another DomU. The User for this would be mostly me. I can see 2-4 being sometimes used by 2-3 users, but that would be infrequent. I’m looking for a repeatable setup. Ideally I’d like to automate this setup through Chef or Puppet or something similar. Once everything runs, I want to be able to ssh/screen/tmux into 1-6 from my laptop or any other computer on the LAN/on-the-go. My queries are:- Is putting 1-6, all of them on a single box, a good idea? If so, what kind of hardware should I be looking at, for a low-cost, low-power setup? Although not at present, but in future I might be looking at adding audio/media servers to the mix. Would that impact the answers to 1? I have an old Pentium 3 and 810e motherboard combination. Is there any way I could put it to use? I had a look at the Sheevaplug, and was wondering if I could split off the NAS on its own using that. But ruled it out preliminarily due to its reported heating issues. Is it something i should still consider? Thanks in advance

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• Buying a new printer instead of replacing ink?

  - by Kelsey

  With prices of basic printers being around $40 - $50 and a ink cartridge being around $20 - $30 each for black AND color. It costs me more to replace the printer's ink than to just buy a brand new printer. This just seems like a total waste of materials though (I have 4 printers sitting in my basement with no ink). I know the ink cartridges are smaller (not as full) in a new printer but I go through it in about 1 to 1.5 years only and by then my $40 gets me a better printer to boot. Also with certain printers the heads are not part of the ink (Epson use to do this and still might) so I get new heads as well. Is this a bad practice? Are retailers making this a reality when they are selling working hardware cheaper than replacement parts? Is there something more I should be considering? Edit: Some background, long ago I bought an Epson printer which I used to print docs etc vary rarely. The ink started running low so I bought to new carts for around $60 if I recall. The printer then stopped working so I replaced the carts with the new ones but the head was dead on the black which was not worth repairing. I bought a new HP printer for $49. This lasted around 1.5yrs and then the ink ran out, I went to buy new carts and the guy at the store got me to buy a new printer (that was smaller, faster, higher dpi, etc) and it was cheaper than replacing the ink. When the ink ran out on that one I bought a new printer again, etc. The printer gets used maybe once a week at most and I never print photos or anything. It normally is jsut stored away unplugged accumulating dust. People say to buy a laser printer but they are much larger, do not print color, (in the price range I am looking at) and might have the exact same issues. The problem I see is the manufacturer is making my behaviour possible by selling new printers at a loss hoping that they will cash in on the ink later. How can they produce a printer for so cheap which HAS ink in it, and the refills cost more than the unit? It can't.

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• Revolutionary brand powder packing machine price from affecting marketplace boom and put on uniform in addition to a lengthy service life

  - by user74606

  In mining in stone crushing, our machinery company's encounter becomes much more apparent. As a consequence of production capacity in between 600~800t/h of mining stone crusher, stone is mine Mobile Cone Crushing Plant Price 25~40 times, effectively solved the initially mining stone crusher operation because of low yield prices, no upkeep problems. Full chunk of mining stone crusher. Maximum particle size for crushing 1000x1200mm, an effective answer for the original side is mine stone provide, storing significant chunks of stone can not use complications in mines. Completed goods granularity is modest, only 2~15mm, an effective option for the original mine stone size, generally blocking chute production was an issue even the grinding machine. Two types of material mixed great uniformity, desulfurization of mining stone by adding weight considerably. Present quantity added is often reached 60%, effectively minimizing the cost of raw supplies. Electrical energy consumption has fallen. Dropped 1~2KWh/t tons of mining stone electrical energy consumption, annual electricity savings of one hundred,000 yuan. Efficient labor intensity of workers and also the atmosphere. Due to mine stone powder packing machine price a high degree of automation, with out human make contact with supplies, workers working circumstances enhanced significantly. Positive aspects, and along with mine for stone crushing, CS series cone Crusher has the following efficiency traits. CS series cone Crusher Chamber is divided into 3 unique designs, the user is usually chosen in accordance with the scenario on site crushing efficiency is high, uniform item size, grain shape, rolling mortar wall friction and put on uniform in addition to a extended service life of crushing cavity-. CS series cone Crusher utilizes a one of a kind dust-proof seal, sealing dependable, properly extend the service life of the lubricant replacement cycle and parts. CS series Sprial Sand washer price manufacture of important components to choose unique materials. Each and every stroke left rolling mortar wall of broken cone distances, by permitting a lot more products into the crushing cavity, as well as the formation of big discharge volume, speed of supplies by way of the crushing Chamber. This machine makes use of the principle of crushing cavity, also as unique laminated crushing, particle fragmentation, so that the completed product drastically improved the proportions of a cube, needle-shaped stones to lower particle levels extra evenly.

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• Scoping a home dev server

  - by AbhikRK

  Hi. I’m looking to build a multi-purpose home development server. In this post, I’m looking to outline what I want from such a system, and the ‘why’s of it, to some limited extent, and finally, some rudiments of how I’m looking to go about that. I’m mostly a developer, with just about some sysadmin familiarity. So, please excuse, correct me, and suggest on any ignorance which would come across in the following ;-) It will serve the following goals to start with:- NAS (Looking at using ZFS) Source control repo e.g Git server Database e.g MySQL server Continuous Integration e.g Hudson server Other stuff as and when they come up e.g RabbitMQ etc A development sandbox to play around with new stuff I want to achieve a high uptime for 2-5 as much as possible. They should run as independent services and with minimal maintenance. (e.g TurnKey Linux appliances) I’m thinking of running them as individual Xen DomUs. Then, maybe the NAS can be a Dom0 and 6 can be another DomU. The User for this would be mostly me. I can see 2-4 being sometimes used by 2-3 users, but that would be infrequent. I’m looking for a repeatable setup. Ideally I’d like to automate this setup through Chef or Puppet or something similar. Once everything runs, I want to be able to ssh/screen/tmux into 1-6 from my laptop or any other computer on the LAN/on-the-go. My queries are:- Is putting 1-6, all of them on a single box, a good idea? If so, what kind of hardware should I be looking at, for a low-cost, low-power setup? Although not at present, but in future I might be looking at adding audio/media servers to the mix. Would that impact the answers to 1? I have an old Pentium 3 and 810e motherboard combination. Is there any way I could put it to use? I had a look at the Sheevaplug, and was wondering if I could split off the NAS on its own using that. But ruled it out preliminarily due to its reported heating issues. Is it something i should still consider? Thanks in advance Have posted this question previously on SuperUser but no responses yet. So was wondering if this is a more apt forum for this.

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• Cisco ASA SSL VPN options?

  - by JonH

  Disclaimer: I am not a network admin so I may be wrong here but I thought asking here would help. I'm a developer mainly on the .net framework as well as helping get a mobile intranet app working. Because this app is only allowed to be used on our network I can easily run this app on our wireless network connection within our building. All is fine and dandy but we'd also like to be able to run this mobile app at say a customer plant using VPN software. I thought surely this could be easy as we exclusively use Samsung s4 phones so I thought I'd download Cisco's Samsung any connect software to allow us to VPN...its right on the play store. Sure enough it doesn't work. I mention it to our network admin who says not possible since we have old technology that doesn't support SSL. He mentions we'd have to upgrade all of our hardware, the firewall, etc. to get this to work. We really need VPN on our phones not only for this app but other internal apps, etc. He did mention the following: We can’t upgrade the software on our ASA, because we don’t have enough memory for the new version.  (the asa is very old).  We can’t add more memory, so we would have to get a new firewall, which I have been told I cannot do. In addition he also mentioned: The Samsung AnyConnect client uses SSL to connect.  With the current (old) version of software that our firewall is running, the SSL connections are unreliable.  We need different hardware in order to upgrade our firewall, which we are unable to attain at this time.  This is the same reason that Windows 8 clients are not able to connect. I am curious hence me asking. vpns seem to be fairly simple to setup. What other options do I have aside from making this a public site or web service that consumes this data over the internet as this is a complete no no. What can we do to make this work without that much effort or cost.

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• PCI-DSS compliance for business with only swipe terminals [migrated]

  - by rowatt

  I support the IT infrastructure for a small retail business which is now required to undergo a PCI-DSS assessment. The payment service and terminal provider (Streamline) has asked that we use Trustwave to do the PCI-DSS certification. The problem I face is that if I answer all questions and follow Trustwave's requirements to the letter, we will have to invest significantly in networking equipment to segment LANs and /or do internal vulnerability scanning, while at the same time Streamline assures me that the terminals we have (Verifone VX670-B and MagIC3 X-8) are secure, don't store any credit card information and are PCI-DSS compliant so by implication we don't need to take any action to ensure their network security. I'm looking for any suggestions as to how we can most easily meet the networking requirements for PCI-DSS. Some background on our current network setup: single wired LAN, also with WiFi turned on (though if this creates any PCI-DSS complexities we can turn it off). single Netgear ADSL router. This is the only firewall we have in place, and the firewall is out the box configuration (i.e. no DMZ, SNMP etc). Passwords have been changed though :-) a few windows PCs and 2 windows based tills, none of which ever see any credit card information at all. two swipe terminals. Until a few months ago (before we were told we had to be PCI-DSS certified) these terminals did auth/capture over the phone. Streamline suggested we moved to their IP Broadband service, which instead uses an SSL encrypted channel over the internet to do auth/capture, so we now use that service. We don't do any ecommerce or receive payments over the internet. All transactions are either cardholder present, or MOTO with details given over phone and typed direct into terminal. We're based in the UK. As I currently understand it we have three options in order to get PCI-DSS certification. segment our network so the POS terminals are isolated from all PCs, and set up internal vulnerability scanning on that network. don't segment the network, and have to do more internal scanning and have more onerous management of PCs than I think we need (for example, though the tills are Windows based, they are fully managed so I have no control over software update policies, anti virus etc). All PCs have anti virus (MSE) and windows updates automatically applied, but we don't have any centralised go back to auth/capture over phone lines. I can't imagine we are the first merchant to be in this situation. I'm looking for any recommendations a simple, cost effective way to be PCI-DSS compliant - either by doing 1 or 2 above with (hopefully) simple and inexpensive equipment/software, or any other ways if there's a better way to do this. Or... should we just go back to the digital stone age and do auth/capture over the phone, which means we don't need to do anything on our network to be PCI-DSS certified?

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• Sendmail Tuning For Batch Mail Jobs

  - by Kyle Brandt

  I have a webservers that send out emails to a sendmail relay server as a batch job. The emails need to be accepted by the relay sendmail server as fast as possible, however, they do not need to go out (be relayed) very quickly. I am seeing a couple timeouts once and a while from the webserver trying to connect to the relay server. The load currently is about 30 emails a second for a couple minutes. There are quite a few tuning options for sendmail in the sendmail tuning guide. What I am focusing on now is the Delivery Mode: Delivery Mode There are a number of delivery modes that sendmail can operate in, set by the DeliveryMode ( d) configuration option. These modes specify how quickly mail will be delivered. Legal modes are: i deliver interactively (synchronously) b deliver in background (asynchronously) q queue only (don't deliver) d defer delivery attempts (don't deliver) There are tradeoffs. Mode i gives the sender the quickest feedback, but may slow down some mailers and is hardly ever necessary. Mode b delivers promptly but can cause large numbers of processes if you have a mailer that takes a long time to deliver a message. Mode q minimizes the load on your machine, but means that delivery may be delayed for up to the queue interval. Mode d is identical to mode q except that it also prevents lookups in maps including the -D flag from working during the initial queue phase; it is intended for ``dial on demand'' sites where DNS lookups might cost real money. Some simple error messages (e.g., host unknown during the SMTP protocol) will be delayed using this mode. Mode b is the usual default. If you run in mode q (queue only), d (defer), or b (deliver in background) sendmail will not expand aliases and follow .forward files upon initial receipt of the mail. This speeds up the response to RCPT commands. Mode i should not be used by the SMTP server. I currently have the CentOS default modes: Sendmail.cf: DeliveryMode=background Submit.cf: DeliveryMode=i Is sendmail.cf/mc for outgoing email from relay (to the intertubes) and sumbit.cf/mc for incoming eamil (from my webservers). Would it make sense to change the outgoing delivery mode to queue? If I did, what would the outbound email flow behave like? If this is the right thing to do, can anyone show me example mc configurations for this change? If it isn't, what recommendations are there for these constraints?

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• How to configure DD-WRT routing table when creating an isolated network segment for PCI C VT compliance

  - by tetranz

  I'm the volunteer support and system admin person at a small private school. We need to setup a PCI compliant Windows PC as a virtual terminal for credit card processing. I've read questionnaire SAQ C-VT and, to quote, this computer needs to be accessed: "via a computer that is isolated in a single location, and is not connected to other locations or systems within your environment (this can be achieved via a firewall or network segmentation to isolate the computer from other systems)" Our setup is as follows: DSL modem from ISP is setup to be a "transparent pipe" with no extra services. That goes into the WAN port of Linksys WRT54-GL running a DD-WRT. The LAN is 192.168.1.x. There are a couple of other WRT54-GL / DD-WRT devices. One is used as a wireless AP and another is a client bridge. To isolate the VT (virtual terminal) machine, I have another DD-WRT device. Its WAN is connected to a port on the 192.168.1.x LAN. The virtual terminal machine is connected to its LAN which is at 192.168.10.x. The SPI Firewall etc is turned on. It's basically the default DD-WRT gateway setup where the "ISP" is our own LAN. That's working. All incoming traffic to the VT machine is blocked, including from our own LAN. The VT can access the internet BUT, and here's the problem, it can also ping any of the computers on the 192.168.1.x LAN. I think I need to stop that. I'm guessing that I could do something with the Static Routing table in the VT machine's DD-WRT device. I need to route anything going to 192.168.1.x other than the gateway which is 192.168.1.1 to 0.0.0.0 or something like that. That's where I'm stuck at the end of my knowledge. Or ... do I need to get yet another DD-WRT so the network is "balanced". Maybe I need to have the internet from the DSL going into a DD-WRT which has only two devices on its LAN i.e., two other DD-WRTs, one for the main LAN and one for the VT. I think that would do but I'd like to avoid the extra cost and complexity if I don't need it. Thanks

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• Windows server detected error with hard disk

  - by user53864

  We have hosting Windows server 2008 R2 and I am working as admin in small company. The server is hanging and restarting as the hard disk seems to be damaged due to power fluctutaion(though having inverter) as it's showing the below error message on server reboot: Problem detected with the hard disk Press any key to continue It's Seagate 1TB SATA hard disk and it's booting after pressing enter. So it's clear that the hard disk is dying. Yes, it's in warranty but it's fact that warranty won't recover the lincesed windows server 2008 and it's data. As it's booting now, I backed up required things and I am thinking to clone the entire hard disk. The first thing it striked me is checking on the Seagate site if any tool available for cloning and I found Seagate DiskWizard but not specified it for windows server 2008. Please anybody could help me giving your best ideas for the below: Urgently, What's the best way(free of cost) for me to clone in my case with the new same sized hard disk? It's a one time lincenced and I cannot use the same key again if I reinstall the server. Will the lincense be carried with new disk if cloned? else there is a way to contact Microsoft explaining the problem occurred, to obtain new key for no charge?. I want to take measure for future. How do I keep two disks in continuous sync? mirrored & raid are the only options converting the disks to dynamic? or is there a best way I could do with no additional charge?. Any help is greatly appreciated. Thank you! EDIT:1 I started cloning the disk with CloneZilla and it was going proper showing in GUI. But after some time there is no GUI but a black screen with some codes(looks like disk location numbers) going page by page(I have attached the screenshots below captured from my phone). Do you people think it's actually cloning?. I started in the morning and it's evening now. I left the office now to let it finish what it's trying to do and I'll go & check it tomorrow. Slowly lost hope, don't know what face it's going to show tomorrow. Any ideas?

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• Moving from VPS to Cloud

  - by GRIGORE-TURBODISEL

  ...and I have a few questions. I'm basically working on a MySQL+PHP based webapp. Since I don't have on-demand scaling with VPS, I'm planning to move from VPS to Cloud when I hit the 1000 subscribers barrier. I'm looking at Windows Azure but I'm ok with other suggestions. So here are my questions: Will it really cost me a kidney? Every subscriber needs to download around 4-5MB of static resources each day. Bandwidth is free on the VPS but here I see costs can easily get to $800.00/mo; this makes me very insecure about the whole thing, I mean VPS is just $2,000/yr. Do I need another VM or is PHP included in the Web Sites? I have basic sysadmin skills, I think I can handle setting up a PHP install, but will I have to do this? If yes, what other service do I need to setup manually? What about Memcached, MySQL, etc? What security protections does it include? For example I have some basic protection included, like directory traversals and executable files upload; I also have CloudFlare on my other websites for DDoS protection; will I need to do the same thing here too, can it even be installed, can I edit my DNS records, etc? How are e-mails, subdomains, add-on domains, parked domains, etc. handled? I haven't seen any references to e-mail boxes. On the VPS I simply add them from cPanel ([email protected] / whatever.mysite.com / ...); do I have a similar management interface here? Do I get SSH access? Or at least FTP, remote MySQL access and maybe some incremental back-ups or something? Can I see my quotas and advanced traffic info? I must mention that I really like the idea of the whole "cloud" concept, the added reliability and everything but I really need maybe a parallel to regular hosting or something so I know what to expect.

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• Exchange-Server Query

  - by Rudi Kershaw

  First, a little background. I've recently been taken on as a web and software developer for a small company, who has no other in-house IT support. They've been asking my opinion on lots of IT subjects that are quite far out of my comfort zone. I'm definitely not a network admin. Their IT consultancy contractor is pushing them to upgrade their dedicated exchange server, even though it seems like the one they currently have has a lot of life left in it and is running problem free. They say it's "coming to the natural end of it's life". They want to install a monster with a Xeon E5-2420, 32GB RAM, 2x 1TB HDDs, Windows Server 2012 and Microsoft Exchange 2010. They want to charge a small fortune for it. Basically, this system seems massively over the top seeing as it won't be doing anything else other than running as an exchange server for a company with less than 25 email accounts. My employers also have a file server system in-house that hosts three web apps, an SQL server, their local domain, print server and shared folders. That machine is using the same specs as the proposed new one, and it is barely using any of it's potential. I asked if Microsoft Exchange 2010 could be installed on their file server, but they said that MS Exchange can't run on the same system as an SQL server because for some reason they will eat up each others resources (even though the SQL server isn't touching 1% of the current system's CPU or RAM). My question is really, are they trying to rip my employers off? Could MS Exchange be installed on their other server (on a virtual instance or not), or does the old one even need replacing at all? Going with their current suggestion will cost the company in excess of £6k, and it seems entirely unnecessary. I apologies, because I know this is probably a little thin on details, but if I carry on I could end up writing a massive essay that no-one will want to read. I've been doing my research, but I'm not knowledgeable enough make any hard decisions. Let me know if you need any more details. Thank you for any help you can offer. Further Details: The new exchange would need to support Outlook Web App, 25 users, a few public mailboxes, and email exchange with Blackberries.

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• Seriousness of a "Smart" disk error. How long will it last?

  - by Workshop Alex

  I have an 1 TB data disk and the bios and Windows are reporting a "Smart" error. At least, I get a Smart event but it doesn't indicate how serious the failure could be. My system is about 6 months old, including the disk so the warranty will cover the damage. Unfortunately, I lack a second disk of 1 TB in size which I can use to make a full backup. The most important data on this disk is safe, but there's a lot of work data which can be regenerated but this would cost a lot of time. So I ordered an USB disk of 1 TB which will arrive in three days. By then I can make a full backup of the data and afterwards, it can crash. But will the disk live that long? (Well, I won't use the PC as long as I can't make a backup.) How serious is such a Smart event? I know it's serious enough to have it replaced, but will it live for another week or could it die any moment?Update: I purchased an 1 TB external disk and spent most of the day making a backup of the 1 TB disk. It survived that. I then received a new disk, since it was still under warranty and replaced the hard disk. Then I had to spend most of a day again to put back the backup. I need to send back the faulty disk and now have an additional external disk, which could always be practical. :-) The Smart Error report did not cause any failures on the original disk. I won't advise to ignore these warnings, but the disk still has enough life in it to last a few more days. (Just make sure you have a good back-up.) And oh, the horror of having to make a complete backup such a huge disk. :-) If your data is important, make sure you have something that supports incremental backups and lots of space. (In my case, the data wasn't very important, just practical to have on-disk together.)

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• Start a software company offshore

  - by Mascarpone

  Hello Everybody, I own a small, very young, EU based (Italy) company, and among other things, we sell IT solutions. I have a degree in applied mathematics, and I mainly deal with user interfaces, embedded systems, automation and web applications. You can say that I'm an enlightened entrepreneur because I work only with open source software (OS, IDE, I release under BSD , ... everything is free as in freedom), I give high importance to post sales services and customer satisfaction, plus I think I'm the best boss someone could desire (LOL), as I have google in mind when I think about IT workers rights. But the most beautiful thing is that, although everybody advised us not to use open source, is that we are quite profitable!!! (for the sixth trimester in a row). Now I offshore most of the work to an Indian company. I divide the work in modules and I outsource the longer or more trivial ones. I spend a lot of time defining the specifications and I leave the hard work to them. Using productivity bonuses, a lot of prototypes and third-party audits I think that my software has reached a very good quality level. I would like to start my own software development company, in order to improve control over process and cut costs. Obviously I can't afford the cost of labor in the EU, so I thought about opening a company in Asia. What I need Is: 1) Cheap labor - I can afford to give productivity bonuses and higher than average wages and stay profitable just because labor is cheap. 2) Many talents - I need a good level of tertiary education, and a good number of graduates, so I can hire junior developers and train and teach them according to my needs and philosophies (e.g.: open source mind) 3) Good infrastructure - buildings, transport, internet, .... everything that a company might need. I thought about 3 possible candidates: 1) India - I already work with indian people, I know that they are realiable and speak a good english. Big cities are too expensive, but maybe a small city like lucknow http://en.wikipedia.org/wiki/Lucknow could suits my needs. 2) China - They say it's cheaper than India, but I everytime I worked with a chineese company the language was a big barrier. They work hard, are somewhat skilled and cheap but maybe it's a risky path. Plus I feel a little uncofortable with their lack of human rights. 3) Philippines - Same as china: cheaper than india, but maybe less educated. Where do you think it's the best place to start a software company? Any reading or book to advise? thank you very much

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• What Sort of Server Setup Am I Likely to Need? - School A/V streaming

  - by DeathMagus

  My prior experience with servers has generally been limited to home file-sharing servers, low-traffic web-servers, and the like. This leaves me with the technical knowledge of how to set up a system, but little experience in terms of scaling said system. My current project, however, has me as the technical lead in setting up a school for online audio and video streaming. The difficulty I'm running into is that I don't quite have the experience to guess what they'll need, and they don't have the experience to tell me - so I've tried to ask as many pertinent questions about what they want to do with their server, and here's what I found out: About 1000 simultaneous users, and hoping to expand (possibly significantly) Both video and audio streaming, at obviously the highest quality possible Support for both live and playlist-based streaming. Probably only one channel, but as it's an educational opportunity, I imagine letting them have a few more wouldn't hurt. No word on whether they're locked into Windows or whether Linux is acceptable. Approximate budget - $7000. It may actually be about $2k less than this, because of a mishap with another technology firm (they ordered a $7000 DV tape deck for some reason, and now the company wants them to pay a 30% restocking fee). The tentative decisions I've already made: I'm planning on using Icecast 2 for my streaming server, fed by VLC Shoutcast encoding. Since the school already has a DMZ set up, I plan on placing the Icecast server in there, and feeding it through their intranet from a simple workstation computer in their studios. This system isn't in any way mission critical - it's an education tool (they're a media magnet school), so I figure redundancy is not worthwhile to them from a cost:benefit perspective. What I don't know is this: How powerful of a server will I need? What is likely to be my major throttle - bandwidth? How can I mitigate that? Will I need anything special for the encoding workstation other than professional video and audio capture cards and a copy of VLC? Are there any other considerations that I'm simply missing? Thanks a lot for any help - if there's more information you need, let me know and I'll tell you all I can.

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• On ESXi, guest machines hang for significant intervals compared to real machines. How can I fix this?

  - by Tarbox

  This is ESXi version 5.0.0. We plan on upgrading to 5.5 eventually. I have four code profiles, two taken on a real, unvirtualized machine, two taken on a virtual machine. Ordering the list of subroutines by time spent in each one, the two real profiles are practically identical. The two virtual profiles are different from each other and from the real profiles: a subset of subroutines are taking a lot more time on the virtual machines, and the subset is different for each run. The two virtual profiles take a similar amount of time, which is 3 times the amount of time the real profiles take. This gross "how long does it take?" result is consistent after hundreds of tests across three different virtual machines on two different host machines -- the virtual machine is just slower. I've only the code profiling on the four, however. Here's the most guilty set of lines: This is the real machine: 8µs $text = '' unless defined $text; 1.48ms foreach ( split( "\n", $text ) ) { This is the first run on the virtual machine: 20.1ms $text = '' unless defined $text; 1.49ms foreach ( split( "\n", $text ) ) { This is the second run on the virtual machine: 6µs $text = '' unless defined $text; 21.9ms foreach ( split( "\n", $text ) ) { My WAG is that the VM is swapping out the thread and then swapping it back in, destroying some level of cache in the process, but these code profiles were taken when the vm in question was the only active vm on the host, so... what? What does that mean? The guest itself is under light load, this is a latency problem for my users rather than throughput. The host is also under a light load, if I knew what resources to assign where, I could do it without worrying about the cost. I've attempted to lock memory, reserve cpu, assign a restrictive affinity, and disable hyperthread sharing. They don't help, it still takes the VM 2-4x the amount of time to do the same thing as the real machine. The host the tests were run on is 6x2.50GHz, Intel Xeon E5-26400 w/ 16gigs of ram. The guest exhibits the same performance under a wide combination of settings. The real machine is 4x2.13GHz, Xeon E5506 w/ 2 gigs of ram. Thank you for all advice.

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• Educate me - should I buy these prebuilt NAS (which is better) or make my own?

  - by user29336

  I'm trying to learn as much as possible, and I think I've learned quite a bit so bear with me here under my confusion. I found a coupe NAS setups. I'm not sure if one is better than the other, other than the price being higher on some, and some coming with drives VS not. Let me list my setup so you can get an idea of what I want to provide: Macbook Pro Macbook Mini for Media streaming (so far) Windows 7 Gaming Computer Xbox 360 I'd like to provide a storage system for all these devices so they can access files very easily, I'd also like any of these devices to be able to stream media from this storage system. I'd like this storage system to be hassle free in terms of my confidence in the data integrity. If a drive fails, I want to know that I can replace the drive and all my files will still exist. I'd like to access this storage system OUTSIDE of my LAN. If I'm out on a job for work I'd like to go in, or be able to have people DL some files. This brings me to a question, is this what iSCSI is? I'd like this data system to be able to download torrents. I want to mount any drive on this storage system onto my OSX laptop as if it were a local drive attached. (Is this with iSCSI is?) I'd like this system to have a GOOD web based GUI. I don't want to install software to use it. I believe those are the most of my requirements. If I'm missing something that I have no knowledge about, can someone educate me? Here are the systems I found: $729ish on Newegg Lacie 5Big Network 2 (comes with 5TB of space. iSCSI / mac compatible, torrents, nice ui, + others?) Is this overpriced for what it provides? It almost seems like a great deal to me because of the 5TB of space it comes with vs the other NAS systems that don't come with storage but cost $600-700. Should I get a different NAS system? Netgear? Others? Do they have same features? Better? Is it better to buy your own disks? What about making my own? I'm tech savy all around. It seems cheaper to buy a premade one especially with the support/warranty it provides...

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• Hardware for multipurpose home server

  - by Michael Dmitry Azarkevich

  Hi guys, I'm looking to set up a multipurpose home server and hoped you could help me with the hardware selection. First of all, the services it will provide: Hosting a MySQL database (for training and testing purposes) FTP server Personal Mail Server Home media server So with this in mind I've done some research, and found some viable solutions: A standard PC with the appropriate software (Either second hand or new) A non-solid state mini-ITX system A solid state, fanless mini-ITX system I've also noted the pros and cons of each system: A standard second hand PC with old hardware would be the cheapest option. It could also have lacking processing power, not enough RAM and generally faulty hardware. Also, huge power consumption heat generation and noise levels. A standard new PC would have top-notch hardware and will stay that way for quite some time, so it's a good investment. But again, the main problem is power consumption, heat generation and noise levels. A non-solid state mini-ITX system would have the advantages of lower power consumption, lower cost (as far as I can see) and long lasting hardware. But it will generate noise and heat which will be even worse because of the size. A solid state, fanless mini-ITX system would have all the advantages of a non-solid state mini-ITX but with minimal noise and heat. The main disadvantage is the read\write problems of flash memory. All in all I'm leaning towards a non-solid state mini-ITX because of the read\write issues of flash memory. So, after this overview of what I do know, my questions are: Are all these services even providable from a single server? To my best understanding they are, but then again, I might be wrong. Is any of these solutions viable? If yes, which one is the best for my purposes? If not, what would you suggest? Also, on a more software oriented note: OS wise, I'm planning to run Linux. I'm currently thinking of four options I've been recommended: CentOS, Gentoo, DSL (Damn Small Linux) and LFS (Linux From Scratch). Any thoughts on this? Any other distro you would recomend? Regarding FTP services, I've herd good things about FileZila. Anyone has any experience with that? Do you recommend it? Do you recommend something else? Regarding the Mail service, I know nothing about this except that it exists. Any software you recommend for this task? Home media, same as mail service. Any recommended software? Thank you very much.

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• Choosing parts for a high-spec custom PC - feedback required [closed]

  - by James

  I'm looking to build a high-spec PC costing under ~£800 (bearing in mind I can get the CPU half price). This is my first time doing this so I have plenty of questions! I have been doing lots of research and this is what I have come up with: http://pcpartpicker.com/uk/p/j4lE Usage: I will be using it for Adobe CS6, rendering in 3DS Max, particle simulations in Realflow and for playing games like GTA IV (and V when it comes out), Crysis 1/2, Saints Row The Third, Deus Ex HR, etc. Questions: Can you see any obvious problem areas with the current setup? Will it be sufficient for the above usage? I won't be doing any overclocking initially. Is it worth buying the H60 liquid cooler, or will the fan that comes with the CPU be sufficient? Is water cooling generally quieter? Is the chosen motherboard good for the current components? And is it future-proof? I read that the HDD is often the bottleneck when it comes to gaming. I presume this is true to other high-end applications? If so, is my selection good? I keep changing my mind about the GPU; first the 560, now the 660. Can anyone shed some light on how to choose? I read mixed opinions about matching the GPU to the CPU. Will the 560 or the 660 be sufficient for my required usage? Atm I'm basing my choice on the PassMark benchmarks and how much they cost. The specs on the GeForce website state that the 560 and the 660 both require 450W. Is this a good figure to base the wattage of my PSU on? If so, how do you decide? Do I really need 750W? The latest GTX 690 requires 650W. Is it a good idea to buy a 750W PSU now to future-proof myself?

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• Eclipse w/ ADT, Save Failed Illegal Value -1

  - by bgenchel

  I'm trying to save and run my android project in eclipse, but every time I do, I get a pop up with the following message/error: Save Failed, Illegal Value -1. I'm not sure why i'm getting this error; I did just make some changes but none of them were extreme or major and it was working just a bit ago. The worst part is that i'm not receiving any kind of pointer, console or logcat, towards what is causing it. Has anyone experienced this before? If so, what can I do? Thanks in advance!

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• Can't dispatch DDM chunk 46454154: no handler defined - Eclipse - Android SDK

  - by jaywon

  I'm working on a Windows 7, 64 bit machine, and just downloaded and installed the Android SDK and am using Eclipse with Android plugin. I was just going through the "Hello Android" guide here: Hello, Android I also did the suggestions on this page: Droid FAQ Before following the FAQ, the program would compile and run but wouldn't register with the emulator. No code changes, and now I get the following. When I try to run the emulator, I get the following message: [2010-03-05 20:48:41 - HelloAndroid]ActivityManager: Can't dispatch DDM chunk 46454154: no handler defined [2010-03-05 20:48:41 - HelloAndroid]ActivityManager: Can't dispatch DDM chunk 4d505251: no handler defined [2010-03-05 20:48:42 - HelloAndroid]ActivityManager: Starting: Intent { comp={domain.example.helloandroid/domain.example.helloandroid.HelloAndroid} } [2010-03-05 20:48:42 - HelloAndroid]ActivityManager: Warning: Activity not started, its current task has been brought to the front Any suggestions? Thanks!

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• Jenkins and Ant - ant.bat not recognized but env vars are set well

  - by Blue

  I'm trying to set Jenkins to work with Ant but I get the following error: Started by user anonymous Building in workspace C:.jenkins\workspace\CI Demo Checking out a fresh workspace because there's no workspace at C:.jenkins\workspace\CI Demo Cleaning local Directory . Checking out https:///svn/CI_Demo/trunk at revision '2013-10-27T19:34:31.549 +0000' At revision 6 [CI Demo] $ cmd.exe /C '"ant.bat jar && exit %%ERRORLEVEL%%"' 'ant.bat' is not recognized as an internal or external command, operable program or batch file. Build step 'Invoke Ant' marked build as failure Finished: FAILURE however, JAVA_HOME, ANT_HOME and I added the following to "Path": %ANT_HOME%\bin;%JAVA_HOME%\bin And as you can see the command is recognizable when executed in CMD: C:\Users\Administratorjava -version java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode) C:\Users\Administratorant -version Apache Ant(TM) version 1.9.2 compiled on July 8 2013 C:\Users\Administratorant.bat Buildfile: build.xml does not exist! Build failed I would appreciate our help. Thank you, N

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• ASP.Net MVC 2 Auto Complete Textbox With Custom View Model Attribute & EditorTemplate

  - by SeanMcAlinden

  In this post I’m going to show how to create a generic, ajax driven Auto Complete text box using the new MVC 2 Templates and the jQuery UI library. The template will be automatically displayed when a property is decorated with a custom attribute within the view model. The AutoComplete text box in action will look like the following:   The first thing to do is to do is visit my previous blog post to put the custom model metadata provider in place, this is necessary when using custom attributes on the view model. http://weblogs.asp.net/seanmcalinden/archive/2010/06/11/custom-asp-net-mvc-2-modelmetadataprovider-for-using-custom-view-model-attributes.aspx Once this is in place, make sure you visit the jQuery UI and download the latest stable release – in this example I’m using version 1.8.2. You can download it here. Add the jQuery scripts and css theme to your project and add references to them in your master page. Should look something like the following: Site.Master <head runat="server">     <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title>     <link href="../../Content/Site.css" rel="stylesheet" type="text/css" />     <link href="../../css/ui-lightness/jquery-ui-1.8.2.custom.css" rel="stylesheet" type="text/css" />     <script src="../../Scripts/jquery-1.4.2.min.js" type="text/javascript"></script>     <script src="../../Scripts/jquery-ui-1.8.2.custom.min.js" type="text/javascript"></script> </head> Once this is place we can get started. Creating the AutoComplete Custom Attribute The auto complete attribute will derive from the abstract MetadataAttribute created in my previous post. It will look like the following: AutoCompleteAttribute using System.Collections.Generic; using System.Web.Mvc; using System.Web.Routing; namespace Mvc2Templates.Attributes {     public class AutoCompleteAttribute : MetadataAttribute     {         public RouteValueDictionary RouteValueDictionary;         public AutoCompleteAttribute(string controller, string action, string parameterName)         {             this.RouteValueDictionary = new RouteValueDictionary();             this.RouteValueDictionary.Add("Controller", controller);             this.RouteValueDictionary.Add("Action", action);             this.RouteValueDictionary.Add(parameterName, string.Empty);         }         public override void Process(ModelMetadata modelMetaData)         {             modelMetaData.AdditionalValues.Add("AutoCompleteUrlData", this.RouteValueDictionary);             modelMetaData.TemplateHint = "AutoComplete";         }     } } As you can see, the constructor takes in strings for the controller, action and parameter name. The parameter name will be used for passing the search text within the auto complete text box. The constructor then creates a new RouteValueDictionary which we will use later to construct the url for getting the auto complete results via ajax. The main interesting method is the method override called Process. With the process method, the route value dictionary is added to the modelMetaData AdditionalValues collection. The TemplateHint is also set to AutoComplete, this means that when the view model is parsed for display, the MVC 2 framework will look for a view user control template called AutoComplete, if it finds one, it uses that template to display the property. The View Model To show you how the attribute will look, this is the view model I have used in my example which can be downloaded at the end of this post. View Model using System.ComponentModel; using Mvc2Templates.Attributes; namespace Mvc2Templates.Models {     public class TemplateDemoViewModel     {         [AutoComplete("Home", "AutoCompleteResult", "searchText")]         [DisplayName("European Country Search")]         public string SearchText { get; set; }     } } As you can see, the auto complete attribute is called with the controller name, action name and the name of the action parameter that the search text will be passed into. The AutoComplete Template Now all of this is in place, it’s time to create the AutoComplete template. Create a ViewUserControl called AutoComplete.ascx at the following location within your application – Views/Shared/EditorTemplates/AutoComplete.ascx Add the following code: AutoComplete.ascx <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> <%     var propertyName = ViewData.ModelMetadata.PropertyName;     var propertyValue = ViewData.ModelMetadata.Model;     var id = Guid.NewGuid().ToString();     RouteValueDictionary urlData =         (RouteValueDictionary)ViewData.ModelMetadata.AdditionalValues.Where(x => x.Key == "AutoCompleteUrlData").Single().Value;     var url = Mvc2Templates.Views.Shared.Helpers.RouteHelper.GetUrl(this.ViewContext.RequestContext, urlData); %> <input type="text" name="<%= propertyName %>" value="<%= propertyValue %>" id="<%= id %>" class="autoComplete" /> <script type="text/javascript">     $(function () {         $("#<%= id %>").autocomplete({             source: function (request, response) {                 $.ajax({                     url: "<%= url %>" + request.term,                     dataType: "json",                     success: function (data) {                         response(data);                     }                 });             },             minLength: 2         });     }); </script> There is a lot going on in here but when you break it down it’s quite simple. Firstly, the property name and property value are retrieved through the model meta data. These are required to ensure that the text box input has the correct name and data to allow for model binding. If you look at line 14 you can see them being used in the text box input creation. The interesting bit is on line 8 and 9, this is the code to retrieve the route value dictionary we added into the model metada via the custom attribute. Line 11 is used to create the url, in order to do this I created a quick helper class which looks like the code below titled RouteHelper. The last bit of script is the code to initialise the jQuery UI AutoComplete control with the correct url for calling back to our controller action. RouteHelper using System.Web.Mvc; using System.Web.Routing; namespace Mvc2Templates.Views.Shared.Helpers {     public static class RouteHelper     {         const string Controller = "Controller";         const string Action = "Action";         const string ReplaceFormatString = "REPLACE{0}";         public static string GetUrl(RequestContext requestContext, RouteValueDictionary routeValueDictionary)         {             RouteValueDictionary urlData = new RouteValueDictionary();             UrlHelper urlHelper = new UrlHelper(requestContext);                          int i = 0;             foreach(var item in routeValueDictionary)             {                 if (item.Value == string.Empty)                 {                     i++;                     urlData.Add(item.Key, string.Format(ReplaceFormatString, i.ToString()));                 }                 else                 {                     urlData.Add(item.Key, item.Value);                 }             }             var url = urlHelper.RouteUrl(urlData);             for (int index = 1; index <= i; index++)             {                 url = url.Replace(string.Format(ReplaceFormatString, index.ToString()), string.Empty);             }             return url;         }     } } See it in action All you need to do to see it in action is pass a view model from your controller with the new AutoComplete attribute attached and call the following within your view: <%= this.Html.EditorForModel() %> NOTE: The jQuery UI auto complete control expects a JSON string returned from your controller action method… as you can’t use the JsonResult to perform GET requests, use a normal action result, convert your data into json and return it as a string via a ContentResult. If you download the solution it will be very clear how to handle the controller and action for this demo. The full source code for this post can be downloaded here. It has been developed using MVC 2 and Visual Studio 2010. As always, I hope this has been interesting/useful. Kind Regards, Sean McAlinden.

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• Silverlight/Moonlight on Android devices

  - by vtortola

  Hi! I just got my first Android device, I love it... I also love the fact that you can create your own applications and distribute them as you please. I've read a little bit about Monodroid, and also that apparently Microsoft wants to put Silverlight on these devices, although there is not too much information about either of them... but what about Moonlight? If Monodroid is like Mono... why do we need it? wouldn't be better having Moonlight instead? Therefore we could create rich applications for Android devices. In Silverlight 4, if you install the app locally as full trust, it won't depend on the cross domain policies and you can connect wherever you want... What do you think?

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