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• Windows 7 host with Ubuntu Guest and a performance hit, memory locks?

  - by Cyrylski

  I have a brand new Lenovo T510 with Core i5 and 4GB of RAM with Windows 7 on it. I Installed Ubuntu 10.10 in a Virtualbox. For some reason system gets really slow on this setup which makes me really angry. There's a video card shared with full 3D support enabled and 1GB of RAM allocated for the Ubuntu machine. It may sound stupid, but WHY is the whole memory consumed in an instant when I run Virtualbox? I struggled for like 10 minutes restraining myself from a brutal reset, and now everything runs smooth but memory "in use" in Resource Monitor is 3GB flat with only Chrome running. I'm new to Windows 7, but I'm really disappointed with performance at this point... I used to work in a different environment with much slower hardware and there was no such problem (WinXP over Ubuntu, 1GB out of 2GB allocated for WinXP guest on intel GMA). This is, until I clogged RAM totally there. But I was capable of running Chrome, Firefox and Apache server on a 1GB RAM in Ubuntu there and Photoshop CS4 on Windows XP and it worked. In this case I can't go beyond setting up Ubuntu properly. I bet I'm doing something wrong.

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• PC doesn't POST with a certain model of PSU

  - by Core Xii

  I have this PC with an Asus P5N32-E SLI motherboard and an Intel Q6600 CPU. I got a new RX-5300 PSU, but it didn't work. The motherboard power LED is on fine When I switch power on, the PC powers up briefly (0.5-1 sec) then shuts down From there on out when I switch power on, it stays on, all fans and components seem to be receiving power, but the motherboard won't POST. No video output, no PC speaker beeps, nothing If I turn the hard switch on the PSU off and then back on again, go to step 2; The PC turns on and then off immediately again, and on subsequent power-ups it stays on but won't POST I disconnected every component but the motherboard, CPU and PSU. Still nothing. I tried three other models of PSU on this PC, both of higher (600) and lower (<300) wattage than the 530 on the RX-5300 and they all work fine. At this point I was convinced the PSU was faulty so I returned it. When the replacement arrived, it behaved exactly the same. So two different units of RX-5300 both with the same symptoms, neither working with this motherboard + CPU. Yet, three other models of PSU work perfectly fine. The PC store couldn't reproduce my problem with the returned PSU. I tried resetting the CMOS with the jumper. I tried with both the 4 and 4+4 (with and without the extra +4 connected) CPU connectors (curiously the RX-5300 comes equipped with both). Could it be a statistical probability that I get two units of the same model of PSU that are faulty in the exact same manner? Could the RX-5300 model itself be somehow incompatible with this motherboard? I was under the impression that PSUs were pretty much universal so long as you have the wattage. Could the motherboard be broken in some such a way as to work with certain PSUs but not others? What's going on here?

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• Limited bandwidth and transfer rates per user.

  - by Cx03

  I searched for a while but couldn't find anything concrete, hopefully someone can help me. I'm going to be running a Debian server on a gigabit port, and want to give each user his/her fair share of internet access. The first objective is easy - transfer rates (speed) per user. From what I've looked at, IPTables/Shorewall could do the job easy. Is this easy to setup, or could one of you point me at a config? I was hoping to limit users at 300mbit or 650mbit each. The second objective gets complicated. Due to the usage of the boxes, most of the traffic will be internal network traffic that does NOT get counted to the quota. However, I still need to limit the external traffic, and if they go over, cut off access (or throttle traffic to a very low speed (10mbit?)). Let's say the user has a 3TB external traffic limit. The IF part is: If the hostname they are exchanging the traffic with DOES NOT MATCH .ovh. or .kimsufi. (company owns multiple TLDs), count to the quota. Once said quota exceeds 3TB, choke them. Where could I find a system to count that for me? It would also need to reset or be able to be manually reset on a monthly basis. Thanks ahead of time!

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• Using sound forge 6.0 what will be the need to upgrade to latest version

  - by Jayapal Chandran

  I had been using sound forge 6.0 not recently but long back. I edit mp3 files for my purpose and some more filters like flange, pan, fade in out, recording, line in recording, extracting sound from video files (mpg, avi(divx), etc...), increasing the default volume, editing treble and bass effects, and etc... I am not going to use it professionally. I use it just like that. Now when i checked i could see Sound Forge Audio Studio 10 is the latest version for my purpose. Others are too high i think. Besides, i had been using Gold Wave version 4 very extensively just to edit sound files mostly mp3. and here is the reason for me to change to sound forge. It is when we edit mp3 files it deflashes(making it raw i think) before editing. after editing if i save it asks for the format to save and i will choose mp3. At this point it again applies the compression process which makes the sound file lossy. When i did the same with sound forge it did not deflash. It just edited the file as mp3. May be i dont know whether gold wave has the same option. So, please suggest. oh i had asked a question already like this... here it is goldwave vs sound forge in editing mp3 files

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• Internet compression proxy for low speed broadband?

  - by user23150

  I live in a rural location, using high-latency wireless off a local ISP's tower. My speed tests vary day to day, but I can get around 1Mb up/down. The problem is, I work with large files, uploading and downloading (HD videos, development software, etc.). It can be painful to wait sometimes. Plus I do some side contract game development, and it can be very difficult to playtest with other developers (200ms ping is a good day for me). Now, obviously it's not going to be easy to solve the latency problem without different wireless hardware. But speedwise, I am wondering if I can use some kind of compression technology on a proxy. For instance, my work computer has full access to a 26Mb down, 10Mb up connection, that is totally unused at night and the weekends. If I could run some kind of compression technology on our server, and use it as a proxy to route to my home computer, I could stand to gain some major speed. I realize that by bogging down a system with compression, I could potentially lose whatever speed gain I had. But the proxy server is a quad core xeon, and the receiving computer is a pretty decent i7 computer, so that shouldn't be a concern. I found http://toonel.net/ but it seems more geared toward very slow narrowband users, like dial-up. Plus, I would prefer to just be able to point my browser to a proxy server, rather then install software on my client machine. EDIT I thought about my question a little more, and realize I am going to need to install software on my client in order to decompress, and possible compress (for uploading). That's not a huge deal.

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• What needs to be considered when setting up for Linux Development? [closed]

  - by user123586

  I want to set up a box for Linux development. I have a working linux install with the usual toolchain and an IDE. I'm looking for advice on how to approach structuring accounts and folders for development. As the Perl folks say "There's always more than one way to do it." Left to my own devices, I'll come up with several unproductive ways of doing it before figuring out what an experienced Linux programmer would think obvious. I'm not looking for instructions to follow for a specific set of tools or a specific software package. Instead, I'm looking for insight into what decisions need to be made and how to make them, with understanding of the advantages and disadvantages of each individual choice. These are some of the questions that come up: Where to put sources Where to put built object files and libraries where to install what to set in environment variables what compiler flags matter and how do you manage them across several types of builds what configuration entries to make in an IDE how to manage libraries to support multiple environments how to handle different build versions such as debug vs release, or cross platform builds If you are an experienced Linux developer, the answers to these questions may seem trivial and obvious. I'd like to learn to make decisions about these questions that result in as little manual configuration as possible, given some existing sources, a particular IDE, or no IDE at all, a paticular set of development libraries etc. At this point you're probably thinking: Can you be more specific? Sure. But remember that I'm trying to learn how to think about this stuff, not just follow a recipie for a specific set of results. Example: Setup a project that uses CMake for some of its components, autogen.sh followed by configure for others and just configure for a few more: debug builds without an IDE debug builds in NetBeans debug builds in Eclipse debug build in Visual Studio all of the above with release builds for Linux, Mac and Windows. So... **What are your thoughts on an approach that works for all four? Do you have any advice on what to read?**

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• DBCC CHECKDB fails and quits job, ambiguous error message.

  - by ddono25

  I received a notice that one of our servers' DBCC CHECKDB for all databases has been failing the past four times it has been run. We don't have any data prior to that, but it doesn't look like it has been succeeding for awhile. There are no errors in the log file only: DBCC results for 'sys.sysxmlfacet'. [SQLSTATE 01000] Msg 0, Sev 0, State 1: Unspecified error occurred on SQL Server. Connection may have been terminated by the server. [SQLSTATE HY000] There are 112 rows in 1 pages for object "sys.sysxmlfacet". [SQLSTATE 01000] I ran a DBCC CHECKDB using sp_MSForEachDB to get more accurate results and had the same error on the same DB but at a separate point: DBCC results for 'NameValuePair_Greek_CI_AS'. [SQLSTATE 01000] Msg 0, Sev 0, State 1: Unspecified error occurred on SQL Server. Connection may have been terminated by the server. [SQLSTATE HY000] There are 0 rows in 0 pages for object "NameValuePair_Greek_CI_AS". [SQLSTATE 01000] Also, the error-log states that the DBCC completed without errors for this database. I can't figure out how to track down this ambiguous issue that only happens on this database out of the dozens on this server. Any help is appreciated!

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• Emails not arriving to client's inbox. Server not on black list.

  - by EBroker

  Hi, I'm sending emails to my clients who are hosted on GoDaddy for both their website and email. For some reason, my system's emails are no longer reaching their inbox. My email server sends them alerts when an action is completed. These alerts are posted in my system and my email server is sending these out, but there are no bounceback emails. There have been no issues in the past year, but in the past two weeks the problem started cropping up. My clients were forced to switched to a web-based email provider like Gmail, Hotmail, Yahoo to receive their alerts. This is a temporary solution that works in the interim. I contacted GoDaddy and they are indicating that I am not being blocked. I also have a GoDaddy account and can confirm that my alerts aren't arriving in the inbox regardless of whatever safe sender items I employ in the webmail interface. I even switched all the system's outbound emails to Plain Text, no luck. Can anyone provide some insight and point me in the right direction? Thank you in advance.

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• How to setup a virtual host in Ubuntu running on Amazon EC2 instance?

  - by Rade

  I have an app that's accessible via 1.2.3.4/myapp. The app is installed in /var/www/myapp. I've set up a subdomain(apps.mydomain.com) that points to 1.2.3.4. I want the server to point to var/www/myapp if I type apps.mydomain.com/myapp, how do I do that? I have experience creating virtual hosts(lots of them) locally but I'm lost because it's now in production and it's a little different. Here's my virtual host config: <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName apps.mydomain.com/myapp DocumentRoot /var/www/myapp/public <Directory /> Options FollowSymLinks AllowOverride All </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride All Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> Any idea why I still see the files instead of pointing me to the document root? Just in case someone might ask, the app is based on Laravel 4 framework. It's really bad right now because anyone can access the files from the browser.

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• Google MAIL not arriving - relay not allowed

  - by renevdkooi

  I have a server with sendmail, hosting my domain mind-zone.nl, i changed the MX records to point to the server. When I use Hotmail or any other client the email arrives and everything is fine. ONLY mail from GMAIL server is bounced and gmail returns "relay denied". I have set all the virtual server host settings etc, from command line I can send mails as well, hotmail works, etc. Just not gmail. The strange thing is, this is what gmail returns: Look at the lower part: "Received by" it returns some IP address which is not mine and has absolutely nothing with my domain. While when I do a NSLOOKUP and change to google's DNS server it will state that the IP Address for my domain is correctly pointing at my server. Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 5.7.1: Relay access denied (state 14). ----- Original message ----- MIME-Version: 1.0 Received: by 10.14.37.138 with SMTP id y10mr3421504eea.43.1297665573901; Sun, 13 Feb 2011 22:39:33 -0800 (PST) Received: by 10.14.29.75 with HTTP; Sun, 13 Feb 2011 22:39:33 -0800 (PST)

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• Can't upgrade MySQL Server on new Ubuntu 12.04 install

  - by user179627

  After freshly installing Ubuntu server 12.04, I did the usual apt-get update / apt-get upgrade, which failed for mysql-server-5.5: Setting up mysql-server-5.5 (5.5.31-0ubuntu0.12.04.2) ... start: Job failed to start invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing mysql-server-5.5 (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.5; however: Package mysql-server-5.5 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured I tried a wide variety a approaches suggested by googling, which involved various combinations of apt-get remove/purge/install -f/reinstall, etc., with no luck. I also tried downloading the package directly from launchpad.net and running dpkg -i on it (this had worked for a similar issue with a kernel upgrade), but to no avail. I'm not actually particularly interested in what's going on with mysql, per se (though I will need to figure it out at some time); at this point, my primary concern is that I am unable to apt-get install other packages! What to do?

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• Specific issue on data pump API in oracle

  - by Median Hilal

  I have a client/server architecture. Using an Oracle dbms on the database server side. I need to perform a user-triggered (from client side) backup of the database, where the best way to perform that is using a stored procedure on the server side which the client may call, as the client has no oracle tools to perform the backup. I've searched thorough inside available solutions and have found that using a stored procedure is the best way. Well, then I found that using oracle data pump API is the best way to use inside a PL/SQl stored procedure. My specific questions about the API are... I would like to ask about two issues ... ---- The first ----- the detach function to detach the handler, is it necessary to be used at the end of the procedure? and what if I don't use it? I read the Oracle documentation but I didn't get their point, they say it doesn't terminate the job but indicates that the user is not interested in it, an when I use detach at the end of my procedure the exported .dmp file disappears. ---- The second ----- to perform a user (client side) triggered back up as the modification are only to the data, I used TABLE parameter for the export operation. But the version parameter... what should it be? I also read the documentation but couldn't determine what I need (LATEST or COMPATIBLE) ? Thanks

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• Scripting around the lack of user:password@domain url functionality in jscript/IE

  - by Idiomatic

  I currently have a jscript that runs a php script on a server for me, dead simple. But... I want to be atleast somewhat secure so I setup a login. Now if I use the regular user:password@domain system it won't work (IE decided it was a security issue). And if I let IE just remember the password then it pops up a security message confirming my login every time (which kills the point of the button). So I need a way to make the security message go away. I could lower security settings, which tbh I am fine with but nothing seems to make it fuck off (there might be some registry setting to change). Find a fix for jscript that will let me use a password in the url. There used to be a regedit that worked for older systems which allowed IE to use url passwords (not working on my 64bit windows7 setup) though I doubt that'd have helped jscript anyways (since it outright crashes). Use an app other than IE. Inwhich case I'm not sure how to go about it, I want it to be responsive and invisible so IE was a good choice. It is near instant. Use XMLHttpRequest instead of IE directly? May even be faster but I've no idea if it'd help or just have the same error. Use a completely different approach. Maybe some app that can script website browsing. var args = {}; var objIEA = new ActiveXObject("InternetExplorer.Application"); if( WScript.Arguments.Item(0) == "pause" ){ objIEA.navigate("http://domain/index.html?pause"); } if( WScript.Arguments.Item(0) == "next" ){ objIEA.navigate("http://domain/index.html?next"); } objIEA.visible = false; while(objIEA.readyState != 4) {} objIEA.quit();

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• "Document in ADF" on Canon MX340

  - by Michael Donohue

  I have a Canon MX340 multifunction printer. Recently, it keeps saying "Document in ADF" when I turn on the printer. I've tried clearing this multiple times, but as soon as the feeder wheels stop turning, in an attempt to clear the document feeder, it just pops up the same error again. This is particularly annoying, as it blocks all functions on the device - I cannot print, even though printing has no interaction with the document feeder. I've opened up the feeder device, as much as can be done with fingers alone. There just doesn't seem to be anything in there. I ran a sheet of paper through about six times, just to see if some dust might be getting in the way, and I've blown out the feeder with air. Still nothing. At this point, I don't care too much about the ADF working, I just want to disable whatever sensor is tripping this error message. Any ideas? I found this thread online, where a user has the same problem. But no resolution was reached there.

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• Setting up DNS using BIND

  - by dupdupdup

  i have troubles setting up my db files. Please kindly point me in the right direction! i need to define a nameserver that manage a domain example.org.au then i need it to have two records. one called server which is the ip address of current machine the other called www where www.example.org.au will be pointed to another ip address. i cant seem to get my system to work. This is my db.example.org.au file example.org.au. IN SOA server.example.org.au. ( 1; 3; 1h; 1w; 1h ) ; ; ;Host addresses localhost.example.org.au IN A 127.0.0.1 www.example.org.au. IN A 192.168.1.200 ; another virtual machine server.example.org.au IN A 192.168.1.199 ; current virtual machine If possible Please correct my errors! thanks! Any good guides out there? Thanks in advance ! :)

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• Can I use Upstart to start a script which requires the user's X session?

  - by ledneb

  I wrote a script which greps through the output of synclient to determine whether a laptop's touchpad has miraculously turned itself off (Ubuntu seems to /love/ doing this recently) and, if so, turns it back on. The script is something like this: #!/bin/bash while true ; do if [ `synclient | grep -e"TouchpadOff[\s]*1" | wc -l` -ge 1 ] ; then synclient TouchpadOff=0 fi sleep(3) done (I don't have the laptop to hand right now but you get the point! I will update later when I'm at my laptop if that's incorrect) So I tried running this as an upstart script so my touchpad can heal itself without any interaction. But it seems synclient doesn't find the current user's X session when my script is upstart'ed. I tried running it by using something like su -c myscript.sh ledneb in my script stanza, but to no avail. Should I be looking in the direction of /etc/X11/xinit/xinitrc rather than upstart? Is there a proper way to have this script run in the context of the current (or even a hard-coded) user's x session?

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• Running Tor relay on personal server: can this hurt?

  - by rxt

  I would like to install TOR as relay on a hosted personal server. I have loads of bandwidth that I don't use. It's not an exit point. Can this hurt my server somehow? Possible problems I'm thinking of are blacklisting the IP-address, or something similar. I know that exit points get blacklisted on many servers. So if I'm using Tor as a client, I will probably use a blacklisted IP-address for the outside world, so cannot access those sites. However, I'm running this on a server, and as a public relay. Could this hurt the functioning of and access to websites on this server? I could install it as a bridge. I'm a little confused about the difference between bridging and relaying. If I understand correctly the only difference is that a relay is public. Does this mean that bridging only works if I know someone and give them my IP-address?

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• Active Directory server down, recovering without reinstalling

  - by whatever

  My Windows 2003 server suddenly ceased to function as a DC (this server is the only DC of the domain). All AD related services are down. The only way I can login to the AD is physically to the machine. Everytime I access an AD-related service (e.g. "AD users and computers") I get the below error: Naming information cannot be located because: The specified directory service attribute or value does not exist. Contact your system administrator to verify that your domain is properly configured and is currently online. I found the below system event which matches the time when the issue started, this re-occurs everytime I reboot the server. NTDS General | Global Catalog | Active Directory was unable to establish a connection with the global catalog. Additional Data Error value: 1355 The specified domain either does not exist or could not be contacted. Internal ID: 3200d33 I started the troubleshooting with DNS. Netdiag throws the below error although I think this is simply a consequence of not being able to access the Global Catalog. The procedure entry point DnsGetPrimaryDomainName_UTF8 could not be located in the dynamic link library DNSAPI.dll. Anyway DNS seems OK because I can ping the DC FQDN from the DC itself. I found the below solution which is supposed to help by doing some cleanup of the metadata: http://support.microsoft.com/kb/216498 If I follow procedure 1 here is what I get at step 9: no current site Domain - DC=<mydomain>,DC=<com> no current server no current naming context I can continue the procedure until step 14. I haven't tested step 15 as my understanding is that I will have to reinstall the whole AD again. Is there any way I can recover my AD from there without having to reinstall the whole thing? Update: Yes, the server was powered off/on because reboot would take forever (not because I thought power cycling the unit would fix it more than a reboot).

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• Xamp on ubuntu serves php source for root url only

  - by mazaryk

  Hey, Okay, so installed xamp on my ubuntu machine, started it up and everything worked. Apache ran my php app just fine (including requests to the root url "/"). However, after the first reboot since installing, when I request "http://localhost/" apache serves up the index php page as a phtml source file. All other urls (like "http://localhost/login") work as expected. Backgound: The only modification I made to xamp was to setup a vhost for my app. The app uses an .htaccess file where I define some rewrite rules (the app is an MVC framework and all urls are rewritten to a single entry point php file). I'm using Xamp because I need php = 5.3.0. I know apache will serve up the source of a php file when it doesn't know to process php files. But the config does indeed have "AddType application/x-httpd-php .php" and as I said, the app works for all urls except the root "/" (and only since I've rebooted). The .htaccess file does contain a DirectoryIndex directive. xamp 1.3.7a Ubuntu 9.10 Any ideas?

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• Wifi antenna extension with F-connector/RG-6(RG-59) cable?

  - by rjz2000

  In an older house, the wire mesh in walls surrounding the furnace behave like a Faraday cage and block wifi signals. It is also difficult to lay new cable, however there is television cable to multiple locations due to there once having been a roof-installed, television antenna. It would be relatively trivial to install the wifi router at the center distribution point, then have the antenna broadcasting/receiving the signal plugged in at each of the old television outlets. I assume that it would not be too difficult to find an adapter for SMA <- F-type connectors. The cable is actually RG-59 rather than RG-6, but I assume that it still has relatively good RF isolation along its length, which is no more than a couple hundred feet in any direction. Does anyone know a problem with the idea? Will a router get confused if there is /too little/ interference between the two antenna? Is that length of cable (~100ft) too long for the signal a router broadcasts? I have seen that it is also possible to use old ~$30/each FiOS cable modems available on eBay to extend a network over television cable. However, that seems like a less elegant solution, and might interfere with upnp and dlna services I'd like to have work on a single network. Thanks if anyone has answers or suggestions before I try this project!

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• My scanner isn't responding. It is connected to a SCSI interface using Windows XP

  - by Bob

  I have a Microtek ScanMaker 9600XL scanner. The best part about it is that it is 12x17 inches. Wowza! The worst part about it is that I've had it working at one point, with the same cable, same card, same computer, but have since re-installed Windows XP on it. Currently it will turn on, and blink the Power and Ready lights. They should be solid. I've done my best to find documentation for this, but all I've really gotten is the content on the Microtek site. I've tried turning the scanner on, then the PC. Turning the PC on, then the scanner. When I try launching the software it pops up a dialog saying "ScanWizard Pro can't find any scanners! Use SCSI Check to find a scanner." I know the scanner has a pair of little buttons on the back. These cycle up/down a counter. I think it goes 0-7. Any thoughts on what that does, or how to proceed troubleshooting? I think my next step is to try each of those numbers, and do both pc booted first, and scanner booted first for each of those numbers...

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• How should an experienced Windows SysAdmin learn Linux? [closed]

  - by Systemspoet

  I have a new hire starting in a few weeks who is an experienced Windows SysAdmin. I think he's fairly senior on the Windows side, with a pretty deep AD understanding and experience with Exchange 2007, 2010, and exchange migrations. He's done a little PowerShell but I suspect more of the "run this command to do this" variety then "write a script to do this" sort. However, we are a mixed shop and (he knows this) I expect him to become a reasonably competent Linux SysAdmin over time. I'm looking for good starting points to bring him along. I have over ten years of Linux/UNIX experience, so it all sort of seems intuitive to me, but I've been thinking about the toolkit you actually need to be productive in the Linux CLI world. Just to be able to use the machines at all, off the top of my head... vi Basic CLI stuff -- move around, rename files, copy files, tar, gzip, changing passwords, finding relevant manpages, keep track of where you are, find things in your history, etc, etc. More advanced things that I take for granted but are actually pretty hard -- doing things with 'find', extracting relevant text via 'awk' and/or 'cut', knowing when to use 'grep' and when to use 'grep -e' or 'egrep'. Distribution specific stuff... compiling software, rpm, yum, apt-get, you name it. This all seems pretty basic to me, but when I think back to 1995 when I was first learning my way, some of those things took me years to master. So my question is -- where should I send him to pick up those skills? I'm not just thinking of classes, but rather also websites and books? Where do you all suggest as a starting point for picking up Linux skills?

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• How and where do you manage your domain names?

  - by Saif Bechan

  In the past several years doing web development I often times needed to buy new domain names. I changed registrars a lot also so over the years I have multiple domain names scattered over different registrars all over the world. Now I want to bring a little structure into my business, and I am at the point that I want to be able to have easy control over my domain names in a convenient way. Does anyone have an idea on what the best way is to give structure on this. I have made some suggestions maybe you can comment on them for me. 1) Just leave it as it is I can leave everything as it is. To make adjustments I have to log into different panels, and for some registrars I have to email the changes. 2) Transfer all the domains to one registar This will cost a lot, about 10 usd per domain name. But if I can find a registar where I have full control over DNS this is worth looking at. Can you give me some comments on how you are doing things now. Maybe also which registrar you prefer on doing things.

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• How to "open" existing VMs in Hyper-V without importing them?

  - by Borek

  I had a PC with two physical disks: C: containing the host operating system D: containing a folder D:\VMs where all my virtual machines were stored Now, the C: disk died. I bought a new one, reinstalled Windows on it, enabled Hyper-V feature and now I just need to open the VMs from the D:\VMs folder. However, I don't seem to be able to find a menu item or anything that would allow me to do that - the only thing I see is the "import" command which unfortunately requires the VMs to be explicitly exported (my machines weren't). I firmly believe that when I have all the files constituting a VM (the VHD file, some XML files describing the settings etc.) it must be somehow possible to just "open" these existing VMs in Hyper-V, right? What command am I missing? Edit: I know I can create a blank virtual machines and then just point them to use existing VHDs. However, I am not sure about all the different settings I've made to those VMs so I hope there's a way to simply open those existing VMs instead of recreating them.

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• What are the advantages of registered memory?

  - by odd parity

  I'm browsing for a few low-end servers for a startup and I'm a bit confused about the different memory types. The advantage of ECC is clear - single-bit error correction. When it comes to registered memory it seems more vague, especially in systems that support both registered and unbuffered memory. A Google search mostly finds copies of the Wikipedia article, which states that registered memory chips "...place less electrical load on the memory controller and allow single systems to remain stable with more memory modules than they would have otherwise". However I can't find any quantification of this. What I'm wondering about is: Is registered memory an improvement over unbuffered when it comes to soft error rate, or is it purely about the maximum number of modules supported? If yes, at what point (amount of modules or GB of memory) do these improvements start to become noticeable? For a specific example, the HP ProLiant DL 120 G6 server manual states that maximum supported memory configuration is 16 GB unbuffered (4x4GB) or 12 GB registered (6x2GB). In this case I'd rather have the extra 4GB of memory if the reliability difference is negligible.

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