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• Wake network adapter from deep sleep mode

  - by BeatMe

  I recently buyed a new Mainboard (Asrock ALiveXFire) and got some trouble with the network adapter. After switching my Windows 7 x64 in energey saving mode and returning from it, my network adapter couldn't be found. After some googling I found out, that apparently my network adapter has been put in a deep sleep mode and didn't reactivate. Their solution was to switch the PC off, take out the RAM and the CMOS battery for some time. After that, the adapter should be powered on again, but that didn't happen for me. I waited several hours before turning my PC on again, but that didn't help. Formatting and reinstalling didn't help either. The network adapter is not found in the hardware manager and reinstalling the drivers didn't help. I have the newest BIOS installed on the mainboard. I literally don't know what to try next. I'm thinking of returning my board, but I would like to avoid the hassle.

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• Practical RAID Performance?

  - by wag2639

  I've always thought the following to be a general rule of thumb for RAID: RAID 0: Best performance for READ and WRITE from stripping, greatest risk RAID 1: Redundant, decent for READ (I believe it can read from different parts of a file from different hard drives), not the best for WRITE RAID 0+1 (01): combines redundancy of RAID 1 with performance of RAID 0 RAID 1+0 (10): slightly better version of RAID 0+1 RAID 5: good READ performance, bad WRITE performance, redundant IS THIS ASSUMPTION CORRECT? (and how do they compare to a JBOD setup for R/W IO performance) Are certain practical RAID setups better for different applications: gaming, video editing, database (Acccess or SQL)? I was thinking about hard disk drives but does this apply to solid state drives as well?

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• Compaq 610 fan is constantly on and noisy, base is fairly hot too

  - by Dave

  The fans on both of my HP Compaq 610s are constantly on and the base is fairly hot and I don't know if this is standard issue. HP assures me that this is unusual and that I should return them as DOA. Because both laptops have this problem, I'm thinking that this might be a design flaw rather than a one-off problem. I've updated the BIOS and using their recommended power settings. Am I missing something? Is there anything I can do to fix it?

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• ZFS: Redistribute zvol over all disks in the zpool?

  - by growse

  Is there a way in which ZFS can be prompted to redistribute a given filesystem over the all of the disks in its zpool? I'm thinking of a scenario where I have a fixed size ZFS volume that's exported as a LUN over FC. The current zpool is small, just two 1TB mirrored disks, and the zvol is 750GB in total. If I were to suddenly expand the size of the zpool to, say, 12 1TB disks, I believe the zvol would still effectively be 'housed' on the first two spindles only. Given that more spindles = more IOPS, what method could I use to 'redistribute' the zvol over all 12 spindles to take advantage of them?

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• Why do I get "Permission denied (publickey)" when trying to SSH from local Ubuntu to a Amazon EC2 server?

  - by Vorleak Chy

  I have an instance of an application running in the cloud on Amazon EC2 instance, and I need to connect it from my local Ubuntu. It works fine on one of local ubuntu and also laptop. I got message "Permission denied (publickey)" when trying to access SSH to EC2 on another local Ubuntu. It's so strange to me. I'm thinking some sort of problems with security settings on the Amazon EC2 which has limited IPs access to one instance or certificate may need to regenerate. Does anyone know a solution?

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• Symbolic links and 7zip

  - by Fire Lancer

  I'm trying to compress a folder into a .7z archive. This folder contains symbolic links to some other stuff outside the folder (both directories and files). Apparently 7zip just archives the link it's self which is not what I intended. Is there a way to tell 7zip that I want it to archive the stuff that it links too, not the link its self (so if there is a symlink name "foo" which points to "C:\stuff\foo" I want it to include the "C:\stuff\foo" stuff in the archive in place of foo, not a "0 byte" symlink... Failing that is there any reasonable around it, apart from adding the files and folders in question? Including the stuff through the symlink there's like 10 000 files, the large proportion of which are via symlinks so adding them all individually would take hours... I'm thinking mayby a program that creates a staging folder with the real files in it then passes that to 7zip, or just an archiver that does handle them better?

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• maildir in Windows for IMAP

  - by User1

  I'm interested in accessing my IMAP accounts offline. I found that maildirs are a simple way to make it work. I found that [offlineimap] takes care of almost everything in making the IMAP-maildir sync happen. Then, I can open the account in Mutt or Wanderlust client. One major problem, maildirs use colons in their filenames. Windows doesn't allow colons. I tried mount -f -s -b -o managed "d:/tmp/mail" "/home/of/mail" in Cygwin, but doing an echo test > /home/of/mail/test:file didn't work I'm thinking about ext2fs, but I need an ext2 partition somewhere. Can I make a file into a partition somehow? I don't want to start modifying my hard drive's partition table. Besides, does anyone know if ext2fs will support colons in filenames?

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• Web server (IIS) and database mirroring (Postgresql)

  - by Timka

  Recently our web-server crashed and we had to recover everything from a backup which took the whole day(totally unacceptable in our business). So my question is, how can I create a complete mirror of the server that I can use (switch dns to) in case the same disaster happens in the future? Our main server is on Amazon with Windows 2008/IIS + Postgresql 9.1. I was thinking on creating the same server on a different location as a complete mirror with the database replication. But I'm not sure how to implement IIS instance mirroring over the internet... So my question is, how can I create a complete mirror of the server that I can use (switch dns to) in case the same disaster happens in the future?

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• Can I put a laptop Core i7 CPU in a desktop?

  - by Weezy

  One of the most important thing to me for a CPU is a good mix between speed and heat. For example five years ago I bought a Core 2 Duo 6300 (max TDP 65W): I put a big heatsink on the CPU, no fans (I do hate moving parts and noise) and it worked like a charm and very silently for five years (and it still work but five years later I wouldn't mind a faster CPU and a faster memory controller and more memory). I consider a max TDP of 130W unacceptable (like some high-end Core i7 have), for several reasons. So I was wondering: can I build a desktop and put a Core i7 CPU meant to be used in laptop in it? For example I was thinking about the Core i7 740QM (max TDP 45W [!]). Are these compatible with desktop Core i7 motherboards? (for example on NewEgg it says that the "CPU socket type" for the Core i7 740QM is PGA988, I've not too sure about what this is)

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• SQL Server Column Level Encryption - Rotating Keys

  - by BarDev

  We are thinking about using SQL Server Column (cell) Level Encryption for sensitive data. There should be no problem when we initially encryption the column, but we have requirements that every year the Encryption Key needs to change. It seems that this requirement may be problem. Assumption: The table that includes the column that has sensitive data will have 500 million records. Below are the steps we have thought about implementing. During the encryption/decryption process is the data online, and also how long would this process take? Initially encrypt the column New Year Decrypt the column Encrypt the column with new key. Question : When the column is being decrypted/encrypted is the data online (available to be query)? Does SQL Server provide feature that allows for key changes while the data is online? BarDev

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• Flexible classroom environments (OS, Office)

  - by HannesFostie

  I work in the IT department of a training center, we still offer XP and Office 2003 trainings but also offer Vista and Win7 and Office 2007. Currently, we use VMs on VMware Server but this is obviously not a superb choice. We're thinking of implementing something like VDI (brainstorm phase, we hardly have any details) but I decided to check here if people would have some clever alternatives. Requirements: * Flexible when it comes to deployment * Centralized management would be a big plus * Allow for different software, whether they be compatible or not (all of office except for outlook can be installed simultaneously. for outlook you need to choose between 2003 or 2007) * Allow for different OS We have a big enough budget to implement a proper SAN environment to accomodate the virtualization of the solution, whatever kind it may be. A support contract will probably be necessary as well, because we need to be able to offer quick solutions to problems and with only 2 sysadmins that is simply impossible to guarantee.

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• How backward compatible are the HSDPA mobile networks

  - by Chris Kimpton

  Hi, I have got this Huawei wifi device, which has been unlocked for other networks. Works fine in UK on Vodafone (as well as 3). We are trying to get it to work with the Claro network in Jamaica. It connects and stays connected, but fails to get a 3g connection, just the slow EDGE one. Claro support say its because Claro currently does not support the 2100MHz frequency for 3G, which is what the device uses Does that sound correct? They say I need one that: Ensure however that these devices can use the 850MHz frequency. My understanding was that the device supports up to 2100, including their 850mhz... I am thinking that maybe the APN is incorrect, but I have set it to the only value I can find on the net, namely: internet.ideasclaro.com.jm Thanks in advance, Chris

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• Hiding a file or data from being accessed unless on scheduled days [closed]

  - by gkt.pro

  Possible Duplicate: restricting access to volumes disk even for admin account windows How to restrict use of a computer? I want to limit my access to some data and what I want is that I should be able to access the data only on certain days of the month (e.g., every 3rd day). Is there any way like encryption or some utility to allow me to only access data on specific days? One idea that I was thinking of was to encrypt the data and store the password (will be complex and long so that I couldn't remember it right away) on some website which would then email me back the password in future on those specific days.

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• Merge only a one remote branch into a local branch with Mercurial

  - by Pepijn

  I wan to manage some profiles as XML files in Mercurial repos. The setup I'm thinking of: Each user has a repo with a branch where he manages his own profile, and a number of branches where he can pull and merge other profiles from that branch of another user. So for example I have my own profile branch and a branch labeled friends, in which I want to pull the profile branches of a few remote repos, to collect like a collection of profiles. I figured out that since the repos are unrelated I need to use -f, but I can't figure out how to pull and merge only a single branch into another. So I want like me friend someone profile ---> friends <--- profile \-> family friends <--- profile Is this even possible? Should I use separate repos instead? Is there a better solution?

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• Is putting the swapfile & temp folder to ramdisk a good idea in Windows 7 64 bit with lots of RAM?

  - by Tony_Henrich

  I want my Windows to run as fast as possible. If I have 12GB RAM in Windows 7 64bit, quad core CPU, and all apps fit in memory, will the swap file ever be used for anything? The question is about if it's a good idea to put the swap file in a RAM disk. Would a RAM disk help in any way or will Windows intelligently use all the available memory for all its work? I am also thinking of putting the temp folder on a RAM disk. I know the RAM disk is volatile memory and I don't care about its content if it gets lost.

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• Hypervisor for mixed client and server OSes

  - by Mark

  I need to replace three old boxes I use for development, running Linux, Win Server and Win XP. Instead of purchasing three new boxes I am thinking of purchasing a single box and virtualizing the OSes. As it is for development, absolute performance is not a problem, but I want the Linux and Win servers to run continuously, while running Win 7 as if it is a regular PC. Therefore running Linux and Win Server on top off Win 7 is not an option. Is this a viable solution? Has anyone done this? What is performance like? I'd like to get decent graphics performance with Win 7, sufficient to run the occasional game. If so, I'm looking for suggestions or recommendations on which hypervisor or virtualization option to go for.

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• One server, Two APC UPS on redundant power supplies : How to trigger shutdown ?

  - by Falken

  I have a server racked and its redundant power supplies plugged in two APC Smart-UPS 3000 XLM. Each UPS is connected to two different mains power sources. Two instances of apcupsd are running, each one connected to its own UPS. They can both detect when an UPS is on Battery, and each UPS can then trigger a shutdown on the server. Question is : How NOT to shutdown if ONLY ONE UPS runs out of battery ? Note : Smart-UPS 3000 XLM has a "Power Sync" Function that is able to connect to its peer and detect its status. But when I pulled the plug out of one of them, the Shutdown order was sent anyway. I'm thinking about modifying the shutdown scripts to check with "apcaccess" if the other ups is down. Any experience on this would be appreciated !

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• How to proceed setting up a secondary mysql linux slave?

  - by Algorist

  I have a mysql database master and slave in production. I want to setup additional mysql slave. There is around 15 Terabyte of data in the database and there are MYISAM and InnoDB tables in the database. I am thinking of below options: Shutdown master database and copy the mysql data folder to secondary slave. Can Innodb tables be copied like this? Run flush table with read lock, scp the file to new slave and unlock the table and this is possible for myisam tables, can I do the same for innodb tables too? Thanks for looking at the question.

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• How to Host Multiple Domains / Web Sites on one IIS6 Server

  - by Josh Stodola

  I currently have an IIS6 server that hosts one web site/domain. I am developing another web site (completely separate) that I want to host on this same server. Both domains were purchased from GoDaddy. I believe I will need a server-side ISAPI rewrite filter to internally route the incoming requests based on the domain name. I plan to use Ionic's ISAPI Rewrite Filter to do this because it is free. I know how to install the ISAPI filter and apply it to a web site in IIS, but I have no clue how I am going to route the incoming requests correctly (based on the domain). Also, I don't know if it is wise to setup multiple "Web Sites" or "Virtual Directories". I am thinking that this will depend on how the configured. How should I go about getting this accomplished?

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• What is the best way to clone Win7 machines?

  - by John Hoge

  I'm looking to buy 5 new Win7 boxes and would like to ease deployment by cloning the OS. What I would like to do is install a fresh OS (Dell doesn't seem to sell machines without preinstalled crapware anymore) and then install a few apps on the first one. Once it is just right, I want to clone the OS and install the image on the other four machines and just change the machine name. Is this possible to do without any extra third party software? What I am thinking of doing is backing up the disk image of the first machine to a network share, and then booting the others to the windows install DVD and restoring the same image on each machine. Has anyone had any luck with this technique?

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• Dual-headed graphics card choice: DVI & VGA with 512MB _or_ DVI & DVI with 256MB

  - by TimH

  Which would you choose? Some more detail: I can choose between: A dual-headed card with both heads DVI but only 256MB of memory A dual-headed card with one VGA and one DVI, with 512MB of memory. Both monitors are 1600x1200 I'll be doing mostly business app development on the computer. No gameplay or advanced graphics work. It's running Win7 and is a quad-core i5. I'm thinking of going with 256MB one, just so both displays are DVI and I don't have to shift between sharp & blurry when I look from one screen to the other. But I'm not sure if the additional RAM would be a huge boon for some reason (Win7 GPU acceleration, for example? But with a quad-core, who cares?).

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• How to change from own Internal/Extrernal DNS to use an outsourced service like DNS Made Easy?

  - by Joakim

  Our current setup is a co-located linux box with an openvz kernel with a handful virtual containers for www, mail etc. and one container run Bind9 with a split views configuration serving External and Internal DNS. The HW-Node runs a shorewall firewall and all containers uses private ip's. The box (and DNS) basically handles web and mail for a handful domains and it works well but we still think it would be a good idea to outsource the public DNS and now to my question... Although I am fairly comfortable with the server stuff and DNS, I'm far from a pro and guess I basically need some confirmation that I am thinking in the right direction in that I basically just move the content of our external view (with zone files) to the external service and keep the internal view (or actually remove the view), update the new external DNS with thier names servers, update the info at my registrar and wait for propagation or have I missed something? Maybe someone else here run something similar already and can share some exteriences? I found this question which at least confirms it can be done.

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• Engineers are using explosives to remove hard rock outside our office building. What countermeasures should we take?

  - by Karrax

  Our building is located approx. 100 meters from the explosive charges. They happen several times per day, and really shake the entire building a lot. This is going to go on for many days and the blasts are supposed to get stronger. Our server rooms are nothing fancy; one of them has all the racks on hard concrete while the other one has a raised floor (the one which allows the cables to go beneath it). Does anyone have any tips, countermeasures or best practices for us? Currently we are thinking of the following countermeasures: Daily report of the server rooms status lights (HD lights, power supplies and so on). Nightly check disk scan on the most important servers Order in extra supply of spare harddrives Edit: Many good answers here! However one needs to be accepted. The highest voted answer at the time of this edit will get their answer accepted.

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• Converting my PC to a server

  - by Sean87

  I live in a university campus and luckly I have super fast internet in my room, with a static IP address. I tried to setup XAMPP and by pointing to my IP address from anywhere I can access the services running on my PC. Now I am thinking of hosting my own website on my own PC. I am not sure what else I will need (beside the static IP) to make this happen (if it is possible at all). I am running Windows 7 ultimate and of course I do have a domain registered. What should I point my domains DNS names to make this happen (I assume it is far more steps involved!)

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• Software RAID 10 on Linux

  - by vpetersson

  For a long time, I've been thinking about switching to RAID 10 on a few servers. Now that Ubuntu 10.04 LTS is live, it's time for an upgrade. The servers I'm using are HP Proliant ML115 (very good value). It has four internal 3.5" slots. I'm currently using one drive for the system and a RAID5 array (software) for the remaining three disks. The problem is that this creates a single-point-of-failure on the boot drive. Hence I'd like to switch to a RAID10 array, as it would give me both better I/O performance and more reliability. The problem is only that good controller cards that supports RAID10 (such as 3Ware) cost almost as much as the server itself. Moreover software-RAID10 does not seem to work very well with Grub. What is your advice? Should I just keep running RAID5? Have anyone been able to successfully install a software RAID10 without boot issues?

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