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• Windows server's HDD Spin down daily/nightly - Does it makes sense?

  - by Riccardo

  A Windows Server 2003 R2 has the following hard disk configuration: - 3 internal hard disks attached to a 3Ware unit, configured in Raid 1 + spare unit - 3 external USB backup disks: 2 Verbatim 1TB (Samsung HD103SI) + 1 Western Digital 1TB (WD10EADS) The server runs 365 days per year, h24, however: - at daytime the server/user usage is limited to the internal hard disks - at nighttime there's no user usage, apart from scheduled maintenance tasks, basically the Server will be idle from 7PM to 8AM. apart from nighly backups (few hours). I was wondering if: (a) it makes any sense let Windows manage power savings, allowing disks to spin down accordingly, ** OR** let the disks stay awlays-on, to avoid permature wearing, due to continuous spin up/down (b) leave internal disks always on, and force external disks to power down while idle (this requires third party tools, such as Verbatim's Green button utility) Your thoughts?

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• Trying to determine the correct number of XFS allocation groups for postgresql server on Linux

  - by HBlend

  I am running a postgres 8.4.5 server on the linux 2.6.33.7 kernel on an 8 disk raid array with an LSI controller. Most of the tables are around 1GB or less. I know that XFS uses allocation groups (AG) to achieve I/O parallelism. My first question is, does this mean that if two tables are in the same AG, all I/O requests are queued to both of them if either is being read from/written to? If so, I assume I would want to spread my tables across as my allocation groups as possible, correct? Wouldn't this ensure that multiple users querying different tables would get the best performance?

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• Microsoft SQL Server 2005 Express Edition SP4 wasn't installed

  - by user754334

  I lost track of my account when my question was moved to superuser. I wasn't able to install Microsoft SQL Server 2005 Express Edition SP4 through automatic update so I downloaded the update from here and tried manual install, which was also failed with some error: The components that you are trying to install are already installed I checked the product version of sql server 2005 which returned 9.00.5000.00 through command Select @@version. Now the question is, if the automatic update wasn't able to apply the SP4 patch then how come the version is updated to 9.00.5000.00 ? There is no way to rollback or reinstall the patch as it takes the entire SQL Server which came with Visual Studio 2005 to be re-installed. Is there any other way I can verify that SP4 patch was properly applied? Edit: I used MBSA Tool to analyze the required updates which confirms that the Microsoft SQL Server 2005 Express Edition SP4 is missing.

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• What is your favorite password storage tool?

  - by Marcel Levy

  Aside from personal passwords, I'm always juggling a number of project-specific passwords, including those for network, web and database authentication. Some authentication can be managed with ssh keys and the like, but everywhere I've worked I also faced the need for the management of passwords that need to be available to a number of different people. So what do you use, either for personal or team-based password management? Personally I'd like to hear about cross-platform tools, but I'm sure other people would be satisfied with Windows-only solutions. I know the stackoverflow podcast tackled this issue in #7 and #9, but I'm hoping we can come up with the definitive answer here. Update: Even though this question was asked before its sibling site existed, you should probably add your two cents to the more active question over at superuser, which is a more appropriate venue for this.

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• How can I tell if I have PCI Express 2.0 or 2.1?

  - by Stefan Lasiewski

  I am looking at a variety of PCI Express cards, such as a SATA RAID Controller and a Video Card. Some of these cards say they only support PCI Express 2.1, not PCI Express 2.0. I know that my motherboard supports PCI Express 2-something, but the manual doesn't say '2.0' or '2.1'. How can I tell if the PCIe slot on my motherboard is PCI Express 2.0 or PCI Express 2.1? Is it possible to determine the PCIe type from the Windows or Linux commandline? I was under the impression that most PCI Express 2.1 devices are backwards compatible with PCI Express 2.0. Is it possible that the vendor is wrong in saying that PCI Express 2.1 is required?

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• OpenGL - What softwares are needed to learn Open GL on Osx

  - by sugar

  I strongly believe that - my question isn't related to programing, so that I asked my question here ( super user ). Here, I am not asking what links should I follow to learn OpenGL. I am asking that - What software are needed for learning Open Gl? Let me explain more briefly, I want to learn openGL for iPhone game development. Tools for creating 3D objects which are preferable tools are targeted for osx would be preferable. In short I would like to know, The list of application which are used by iPhone professional game developers on osx. Thanks in advance for sharing your knowledge. Please add comment before down voting. Sagar.

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• Why is the installation of certain programs always such a pain in Linux [closed]

  - by Saif Bechan

  I am new to Linux and I am trying to set up a server. For this I sometimes to need to install special software, but the installation of this is always such a pain. For example I wanted to try the htscanner to see if it did the job for me. When i got to the page there is NO INSTALLATION guide. I had to search for the right one on google. Even on google its a pain to find the right method. Just try it - google search.After a long search and tried different things I finally found out that I had te install some more software before it will work. The website says that the version I used did not had any dependencies. Thats a lie. Release0.8.1: No dependencies registered. You do need certain things for it to work. After managing to set it up it still didn't work I can't figure out why because there is no official guide on the website. So I wanted to just uninstall it and find a better solution. Uninstalling. Uninstalling something in Linux is a real mystery how this actually works. The best answer I got is to manually look for the files and delete them. Whats up with that! There is never something said about uninstalling on the websites. Even on the website of CentOS itself it tels you how to install something like rpmforge packages (it's a miracle they tell you and not have to google it) but there is no mention of what to do when you want to uninstall. Why not? The forums you get on when trying to solve your problem are most of the time in plain text, and you have to scroll trough huge error logs before you see somethings that vaguely resembles your question if you are lucky. The Question My question is if there are any recommended websites / forums that explain the basic concepts of installing and uninstalling software on Linux. And explain other useful operations. And not Wikipedia or the first hits of Google, I have been there already. I am looking for some easy to read trough guides on these operations on Linux. I have been on a lot of websites that explain some Linux operation, but I bet its easier to get a degree in rocket science than to read trough the website and understand what they try to say.

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• Best way to transfer files across unstable LAN?

  - by JamesTheAwesomeDude

  This is very similar to Question 326211, but in this case, the LAN is an unstable Wi-Fi connection. I need to transfer about 11 GiB of files between two computers, both running Linux (although one may be rebooted into Windows.) Their connection is both slow and unstable (due to Linux's awful Wi-Fi support,) but removable media (such as a flash drive or external hard drive) is not an option at this time. Right now, I'm slowly transferring the files, one by one, across SFTP, but I have to reconnect each computer approximately every 90 seconds, and the computers are not very close to each other, so this is not feasible. This is not a duplicate of Question 30186; that one specifically concerns Windows 7, and all the proposed solutions involve closed-source, Windows-only programs (which are all spyware IMHO, and are all off the table even if I trusted them - one of the computers is Linux-only.)

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• If-Modified-Since vs If-None-Match

  - by Roger

  This question is based on this article response header HTTP/1.1 200 OK Last-Modified: Tue, 12 Dec 2006 03:03:59 GMT ETag: "10c24bc-4ab-457e1c1f" Content-Length: 12195 request header GET /i/yahoo.gif HTTP/1.1 Host: us.yimg.com If-Modified-Since: Tue, 12 Dec 2006 03:03:59 GMT If-None-Match: "10c24bc-4ab-457e1c1f" HTTP/1.1 304 Not Modified In this case browser is sending both If-None-Match and If-Modified-Since. My question is on the server side do I need to match BOTH etag and If-Modified-Since before I send 304. Or Should I just look at etag and send 304 if etag is a match. In this case I am ignoring If-Modified-Since .

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• What is the DNS root zone and domain?

  - by Nimmy Lebby

  This might seem like a silly question but I want to get my terminology correct. Please do not delete. I will be more than happy to delete the question myself once I (with the help of a few people I hope) get to a consensus: This was my understanding: DNS root zone = . DNS root domain = (nameless) However, after reading the Wikipedia article, I'm not so sure: A domain name consists of one or more parts, technically called labels, that are conventionally concatenated, and delimited by dots, such as example.com. So this would lead me to believe: DNS root zone = . DNS root domain = . DNS root label = (nameless) Does this make sense? What is your understanding?

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• Alternative to Windows Home Server (WHS) backups

  - by Adam Tegen

  Since Microsoft announced the end of life for WHS, are there any alternatives? Specifically, I am interested in recovering from a catastrophic disk failure with WHS. For example, this is my ideal scenario when a desktop hard-drive fails (has a bad virus, etc): Install a disk of the same size or greater Boot the desktop with the Recovery Disc Point the recovery application at the WHS Pick the machine, the drive(s) and the date of the backup Have a couple beers Reboot to a working machine as if nothing happened. I would need to slap multiple disks in the machine without raid. It sounds like LVM will work here. It would be nice, but not required to have de-duplication of files when multiple machines are backed up. (Single Instance Storage)

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• how to make man page not disappear on exit

  - by Alan

  ...probably a silly question but I could not beat google into telling me the answer so posting here: I got 2 machines - Slackware 13 and Fedora 11. On the slack machine, when I use man I can scroll all the way to the bottom then exit man and the info stays in my terminal window (which I find very convenient as I can read it while typing the command in question, copy-paste the options, etc.). On fedora when I close man the man page info is gone. How can I configure man (or is it the terminal?) to not remove the man page info on exit?

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• optimizing file share performance on Win2k8?

  - by Kirk Marple

  We have a case where we're accessing a RAID array (drive E:) on a Windows Server 2008 SP2 x86 box. (Recently installed, nothing other than SQL Server 2005 on the server.) In one scenario, when directly accessing it (E:\folder\file.xxx) we get 45MBps throughput to a video file. If we access the same file on the same array, but through UNC path (\server\folder\file.xxx) we get about 23MBps throughput with the exact same test. Obviously the second test is going through more layers of the stack, but that's a major performance hit. What tuning should we be looking at for making the UNC path be closer in performance to the direct access case? Thanks, Kirk (corrected: it is CIFS not SMB, but generalized title to 'file share'.) (additional info: this happens during the read from a single file, not an issue across multiple connections. the file is on the local machine, but exposed via file share. so client and file server are both same Windows 2008 server.)

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• Make Google chrome with specific user profile as default browser

  - by Kaushik Gopal

  Is it possible to set Google chrome with a custom user profile as the default browser? When I set google chrome as the default browser, it picks the "default" user profile as against the custom one I have setup. I tried setting google chrome as default browser after opening it from that particular user profile, but it doesn't seem to have an effect. I googled around but could only find another poor soul like myself who asked a similar question here: http://www.google.com/support/forum/p/Chrome/thread?tid=69f0a6e776ceab1c&hl=en There weren't any responses to that question. Cheers.

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• Win 2008 single server development environment (architecture)

  - by Tommy Jakobsen

  I have a few questions about a test development environment that I’m setting up on this server: Intel Core i7-920 Quadcode incl. Hyper Threading 8 GB DDR3 RAM 2x 750 GB SATA-II (probably software RAID 1) The server is going to support max 5 users, maybe 10 when stressed. I was hoping that I could run all the following products on the same server: Windows Server 2008 R2 x64 w/ IIS SQL Server 2008 x64 (R2 when released) Team Foundation Server 2010 Sharepoint Foundation 2010 I know this sounds overkill, but remember that this is for development purpose and testing. This is not a production environment. My question if this will be possible at all? Should I run it all on one Windows 2008 installation, or should I run it in multiple virtual environments using Hyper-V? What do you think?

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• postgres memory allocation tuning 2

  - by pstanton

  i've got a Ubuntu Linux system with 12Gb memory most of which (at least 10Gb) can be allocated solely to postgres. the system also has a 6 disk 15k SCSI RAID 10 setup. The process i'm trying to optimise is twofold. firstly a single threaded, single connection will do many inserts into 2-4 tables linked by foreign key. secondly many different complex queries are run against the resulting data, using group by extensively. this part especially needs to be optimised. i have four of these processes running at once in order to make use of the quad core CPU, therefore there will generally be no more than 5 concurrent connections (1 spare for admin tasks). what configuration changes to the default Postgres config would you recommend? I'm looking for the optimum values for things like work_mem, shared_buffers etc. relevant doco thanks!

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• Shrink Partition on Production Server

  - by Campo

  SO our production server was only setup with one large partition. I have setup a standby server and properly partitioned it. Now the boss wants the production environment's partition shrunk. It is an HP DL380 G5 We have 4 hot swap drives in a raid 5. How best should I go about doing this. Seems like a bad idea to me. Should I use windows or HP to do the partitioning? What should I be aware of in a production environment? The idea is to put the site (Inetpub) on a separate partition instead of the C: drive. How much downtime should I expect? Is this a terrible idea? Anything else I have missed?

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• how to connect virtual box os and local machine

  - by Nrew

  This question is in connection to this question asked by a user before: http://superuser.com/questions/73470/virtualbox-vdi-file-to-vmware On how to convert vdi to vmdk or vmx using vmware converter. How do I connect the windows xp that is in virtual box to the local computer (windows 7) in a network. Because I got this error while I tried following this instruction: Give the IP address, username and password of the remote machine that you would like to convert and then hit next I got this error in vmware converter: Unable to connect the specified host 10.0.2.15 which is the ip address of the xp machine inside virtual box. It also said that there is a network configuration problem. And when I inputted the ip address from whatismyip.com which should be the same as the ip address on local machine. I didn't get the previous error but I got another one, it said that: insufficient permissions to connect to "ip address" What solution can you suggest for this problem?

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• Verify server performance

  - by George Kesler

  I'm looking for a quick and SIMPLE way to verify that new servers are performing as expected. The most important metric is disk performance, second is network performance. I’m trying to prevent problems caused by misconfiguration of RAID arrays, NIC teaming etc. The solution should work with both physical and virtual servers. I don’t need sophisticated analysis with different workloads, just one set of benchmarks which I would run against a reference server and later compare to new ones. One problem is that most benchmarks are not giving accurate results when running on a VM.

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• Getting BootMgr not found errors repeatedly on Win7 x64

  - by abszero

  So here is the basic configuration of the box: Primary RAID 1 (Mirror, Bootable): 2x 300GB WD SATA drives AMD Phenom Quad Core x64 @2.2 ASUS M3N78 Pro Board 4GB RAM Win 7 Ultimate Additionally, this box is a Host OS for several CentOS Boxes via VirtualBox. The box runs like a champ but, for whatever reason, everytime I restart the machine I get a BootMgr not found error when the box tries to boot. I pop in my Win DVD, select 'Repair Windows' then 'Fix Start Up Problems' and everything works fine...once. When I restart the box again I have to go back through this process. Any ideas on what is going on?

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• How can I download django-1.2 and use it across multiple sites when the system default is 1.1?

  - by meder

  I'm on Debian Lenny and the latest backports django is 1.1.1 final. I don't want to use sid so I probably have to download django. I have my sites located at: /www/ and I plan on using mod_wsgi with Apache2 as a reverse proxy from nginx. Now that I downloaded pip and virtualenv through pip, can someone explain how I could get my /www/ sites which are yet to be made to all use django-1.2? Question 1.1: Where do you suggest I download django-1.2? I know you can store it anywhere but where would you store it? Question 1.2: After installing it how do you actually tie that django-1.2 instead of the system default django 1.2 to the reverse proxied Apache conf? I would prefer it if answers were more specific than vague and have examples of setups.

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• Why Buy Hardrives with storage server from a vendor?

  - by Mark

  Hi all, Im just browsing around at storage server's like the Dell MD100/ MD3000 and the Sun J4200 and although the storage server seems reasonable (approx $3000-$4000 AUD) the hard-drives that you buy to go along with them seems exorbitantly expensive. And I'm not sure why. Surely at most they are using good quality RAID level 7200rpm SATA hdd, but even then they are still charging almost 4 times the price. What is the advantage to buying these from them. I can see if one fails then the vendor replacing it is convenient. But at that price you could buy double the amount of hdd and just claim on warranty directly with the manufacturer. It would be much cheaper and you wouldn't be relying on someone else to fix your problems. Is this the case of "you don't get fired if you buy IBM?" mentality or is there some reason I'm not grasping here? Cheers Mark

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• External HDD is always in use when trying to safely remove

  - by Mario De Schaepmeester

  I have a WD 1TB Elements external hard drive and every time I use the Windows 7 "safely remove" feature, it gives me a dialog telling that a process is using the disk. Using Sysinternals Process Explorer and the answer on this question (find everything with the drive letter) I get the following result: What is the $Extend folder and why is it in use? How can I disable it? I cannot remove it using the command line (access denied). Edit: I've followed the instructions over here and under the registry key HKLM\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToBackup I have a Multi-String Value named IgnoreNTFS with data \$Extend* /s But this does not make any difference. Also this question is not about a server. Additionally I can tell that I use a program called mkv2vob to convert video files with a Matroska container into something my PS3 will play. I convert the source files straight from my external HDD, but I would expect if this program does not release the lock on the HDD, surely it cannot be locked if the process isn't even running?

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• One bigger Virtual Machine distributed across many OpenStack nodes [duplicate]

  - by flyer

  This question already has an answer here: Can a virtualized machine have the CPU and RAM resources of multiple underlying physical machines? 2 answers I just setup virtual machines on one hardware with Vagrant. I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with Linux? ------------------------------- | VM with OS | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | Node | Node | Node | ------------------------------- More details: In my environment Nodes are just virtual machines, but my question concerns separate Hardware nodes. If we imagine this Nodes(Novas) are placed on a separate machines (e.g. every has 4 cores) can I run one Virtual Machine across many OpenStack Nodes? Is it possible to aggregate the computation power of OpenStack in one virtual distributed operating system?

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• Why are certain default application associations "locked"?

  - by H.B.

  Edit: As i now have three answers that do not answer the question: This question is not about getting the association to work again. I do not like fighting symptoms, i prefer cures. After associating my MP3 files with MPlayer using the Open with/Choose default program... dialogue i can no longer change that association using said dialogue, the Always use this [...] Checkbox is henceforth always greyed out (Control Panel > Default Programs > Associate a file type or protocol with a program does not let me change it either, it seems to just use the same dialogue anyway). That also happened for MP4s but not for MKVs for example, and if i associate my MP3s with other applications like VLC it does not get blocked. I would really like to know why that is and if i can avoid this beforehand (thankfully i know ways to fix it afterwards already). Edit: Another obervation: The blocking programs (i managed to block it with an association to Visual Studio as well) do not appear in the Recommended Programs of the open-with-dialogue (And the explorer said: "The current program is not recommended, but i won't let you change it, ha!"). Edit: A screenshot as requested: As you can see on the top left (if you know the icon of MPlayer), the file is currently associated with MPlayer. Edit: Ways to fix it (Note: This question is not about fixing it) Using the Default Programs Control Panel > Default Programs > Set Default Programs, select WMP, Choose defaults for this program, check .mp3 This should reassociate the files with WMP and you can create a new association in the explorer. Using the registry (As always, keep your hands off it unless you know what you are doing or if you are fine with accidentally breaking your system) HKEY_CURRENT_USER > Software > Microsoft > Windows > CurrentVersion > Explorer > FileExts > .mp3 Here you could for example clean up the open-with-list, and the current default program seems to be saved here as well in the key UserChoice, there you can change the ProgId string to another application, you can associate it with WMP by entering WMP11.AssocFile.MP3 or just pick another application right away. You may need to mess with permissions on the key though, if you cannot change the ProgId value.

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