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• RAID 10 or RAID 5 for multiple VMs - what is the best choice?

  - by Lars Fastrup

  I have just ordered a new rig for my business. We do a lot of software development for Microsoft SharePoint and need the rig to run several virtual machines for development and test purposes. We will be using the free VMware ESXi for virtualization. For a start, we plan to build and start the following VMs - all with Windows Server 2008 R2 x64: Active Directory server MS SQL Server 2008 R2 Automated Build Server SharePoint 2010 Server for hosting our public Web site and our internal Intranet for a few people. The load on this server is going to be quite insignificant. 2xSharePoint 2007 development server 2xSharePoint 2010 development server Beyond that we will need to build several SharePoint farms for testing purposes. These VMs will only be started when needed. The specs of the new rig is: Dell R610 rack server 2xIntel XEON E5620 48GB RAM 6x146GB SAS drives Dell H700 RAID controller We believe the new server is going to make our VMs perform a lot better than our existing setup (2xIntel XEON, 16GB RAM, 2x500 GB SATA in RAID 1). But we are not sure about the RAID level for the new rig. Should we go for having the the 6x146GB SAS drives in a RAID 10 configuration or a RAID 5 configuration? RAID 10 seems to offer better write performance and lower risk of a RAID failure. But it comes at a cost of less drive space. Do we need RAID 10 or would RAID 5 also be a good choice for us?

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• Internet setup for my office

  - by prakash

  We have two internet connections to our office and our current setup is like this.. The internet connections require pppoe log in so i take each cable and plug it into a wifi router and configure the router to log in to the pppoe and then plug in a cable from the router to a switch and distribute the internet throughout my office. The problem with this setup is it is really hard to monitor and im not able to monitor who is hogging internet usage and what he or she is actually using it for. apart from this we also have a nas setup which is routed through another switch . Could someone please throw a little light on how i can restructure this setup for easy monitoring and better transparency... ? each wan router is connected to a different switch and is distributed to users accordingly.. we have around 40 users in the office.. we want to setup a single linux box to which i want to connect the two wan connections and from there distribute it to all our users.... im looking for a solution where we do not have to invest more that buying a single pc and a couple of nics

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• Can't mount Linux usd disk. It just create /dev/sg device but no /dev/sd

  - by MTilsted

  I have a Corsair R60 ssd disk which is a disk with both sata and usb connectors. But the usb thing seems to be a bit non-standard, or maybe its just my fedora linux. When I insert the disk using a usb cabel to a running Fedora 14 linux system, a device called /dev/sg3 is added but that is all. No new /dev/sd* device is created so I can't mount the disk. If I look at cat /proc/scsi/sg/device_strs I get ATA Hitachi HTS54321 FB2O HL-DT-ST DVDRAM GSA-T50N RP05 Seagate Desktop 0130 Corsair CSSD-R60GB2 So the disk is there. (The last entry) but my linux will for some reason not see it as a usb hard disk. When I insert other usb disks they work fine. It is only this specific disk which causes problems. I have tried on 3 different computers with the same result. A hint to the problem may be that if I add the disk to a windows system(With usb) the disk is called "A fixed disk" and not a portable disk as expected. The disk works fine with linux If i connect it with the sata cabel, but I would really like to have it working with usb too. (To mount it on computers without sata).

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• Raid 5 with hot spare or RAID 10 with no hot spare?

  - by Boden

  Yes, this is on of those "do my job for me" questions, have some pity:) I'm at the limit for what I can do with the number of hard drives in a server without spending a substantial amount of money. I have four drives left to configure, and I can either set them up as a RAID 5 and dedicate a hot spare, or a RAID 10 with no hot spare. The size of each will be the same, and the RAID 5 will offer enough performance. I'm RAID 5 shy, but I also don't like the idea of running without a hot spare. I'm not so interested in degraded performance, but the amount of time the system is without adequate redundancy. The server and drives are under a 13x5 4 hour response contract (although I happen to know that the nearest service provider is at least 2-3 hours away by car in the winter). I should note that the server also has two RAID 1 arrays which would also be protected by the hot spare. Why don't they make drive cages with 9 bays! Heh.

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• Windows 7 Paging file apparently not being used

  - by Daniel F.

  I'm running Windows 7 Home Premium 32bit on a mobo with 24GB RAM. Of those 24GB, 20GB are assigned as a RAMDISK via ASRock XFastRAM. This RAMDISK has the drive letter X assigned to it. On X:\ I'm storing the temporary files folder, as well as pagefile.sys. Pagefile.sys has 6GB of size. The X:\ has usually around 14GB free space, so the temporary files are negligible, it's mostly the browsers which are storing their caches on there. Now my issue is that Firefox is crashing a lot on me, no error message pops up, but I know that this is because it's out of memory. I could kind of live with that, but now that I switched from using Eclipse to Android Studio, I know that I'm in trouble, because Java isn't capable of allocating, and Android Studio, together with the Java instances it launches, is quite a memory hog. So I tried to figure out what's wrong, and apparently Windows isn't swapping out memory onto the paging file. While my applications are crashing (firefox) / not starting (java vm's), the paging file is only using constantly around 15% of its size (checked with the performance monitor). 15% equals to 1GB aprox. I know that the correct solution would be to switch to 64 bit Windows, but I had to use the 32 bit version because of driver issues which I had about two years ago, and I guess that I'll have them again if I reformat and install the 64 bit version. Also, the machine is running quite stable, the only issue is the memory, so I'd like to use it as it is (as the apps are installed and configured) Is there a way to make Windows use the paging file more efficiently? None of my processes require more than 1GB, I'd just like it to swap out some seldomly used stuff, like GoogleCrashHandler.exe and stuff like that in order to have "more physical memory avaliable". Is that possible?

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• Azure Virtual Machines - what fault tolerance do they provide?

  - by Borek

  We are thinking about moving our virtual machines (Hyper-V VHDs) to Windows Azure but I haven't found much about what kind of fault tolerance that infrastructure provides. When I run VHD in Azure, I've got two questions: Is my VHD and all the data in it safe? I think that uploaded VHDs use the "Storage" infrastructure so they should be automatically replicated to multiple disks and geographically distributed but should I still make a full-image backup just to be safe? (Note that of course I will be backing up the actual data inside VMs that I care about; I just want to know if there is a chance greater than 0.0000001% that one day I will receive an email from Microsoft telling me that my VM is gone and that I should create or restore it from scratch). Do I need to worry about other things regarding the availability of my VMs? I mean, when I have an on-premise server I need to worry about the hardware itself, about the host operating system, what would happen if my router failed, if my Hyper-V's C: drive failed etc. Am I right in thinking that with Azure, their infrastructure takes care of all of this? Thanks.

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• Performance experiences for running Windows 7 on a Thin-Client?

  - by Peter Bernier

  Has anyone else tried installing Windows 7 on thin-client hardware? I'd be very interested to hear about other people's experiences and what sort of hardware tweaks they had to do to get it to work. (Yes, I realize this is completely unsupported.. half the fun of playing with machines and beta/RC versions is trying out unsupported scenarios. :) ) I managed to get Windows 7 installed on a modified Wyse 9450 Thin-Client and while the performance isn't great, it is usable, particularly as an RDP workstation. Before installing 7, I added another 256Mb of ram (512 total), a 60G laptop hard-drive and a PCI videocard to the 9450 (this was in order to increase the supported screen resolution). I basically did this in order to see whether or not it was possible to get 7 installed on such minimal hardware, and see what the performance would be. For a 550Mhz processor, I was reasonably impressed. I've been using the machine for RDP for the last couple of days and it actually seems slightly snappier than the default Windows XP embedded install (although this is more likely the result of the extra hardware). I'll be running some more tests later on as I'm curious to see particularl whether the streaming video performance will improve. I'd love to hear about anyone's experiences getting 7 to work on extremely low-powered hardware. Particularly any sort of tweaks that you've discovered in order to increase performance..

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• Browsing \\computer\share fails, but net use \\computer\share works?

  - by JMD

  I've had mixed results with using Windows Explorer to browse remote file shares. The setup: I'm at work on Windows XP SP3 Files are at home on Windows XP SP3 Two separate VPNs are available to access my PC at home corporate OpenVPN (10.1.2.3) a Hamachi/LogMeIn connection (5.1.2.3) With respect to my problem, it doesn't matter which IP I use. They both perform exactly the same way: I expect that if I open Windows Explorer and type in \\10.1.2.3\Shared I should be interrupted with a challenge for credentials, and then be able to interact with the files in the share. However, I just get that annoying dialog, "Windows cannot find '\10.1.2.3\Shared' Check the spelling and try again, or try searching for the item ..." However, I can take that exact same computername/sharename and with net use I can: net use * \\10.1.2.3\Shared * /user:homecomputername\username with this result: Type the password for \\5.69.83.158\C$: Drive Z: is now connected to \\5.69.83.158\C$. The command completed successfully. I can then access the files in Z: in Windows Explorer which was my original intent. Even after Z: is already mapped and the credentials are cached I still cannot bring up \\10.1.2.3\Shared in Windows Explorer. Why does the latter work, but not the former? Edit: Other services work fine, such as RDP. (I have a problem in which I can't SSH home, but I'll consider that separately.)

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• Installing Debian 7.1 on FakeRAID/Intel Z77 results in boot with no grub menu

  - by user198982

  I'm trying to install Debian 7.1 from DVD onto 2x500GB drives which are set up in a FakeRAID mirror using the on-board FakeRAID provided by the Z77 chipset. I have followed the guide here https://wiki.debian.org/DebianInstaller/SataRaid. Namely, I booted into the expert install with the 'dmraid=true' option added, installed onto the RAID mirror which the installer correctly detected, then installed grub2 onto /dev/mapper/.. raid volume. I chose to use LVM (so a boot partition + LVM volume). As per the guide, I have uncommented the "GRUB_DISABLE_LINUX_UUID=true" line in "/etc/default/grub" and ran "update-grub" then "grub-install /dev/mapper/.." (with the right RAID device in the command). However, after I rebooted the system, all I got was a grub console. It did not load the menu. I checked and it seems that it never even generated a menu file. I re-installed Debian a few times since, trying out different options and also a few workarounds people posted online, but to no avail. The best I am getting is a grub console. No menu. Some times it will generate the grub.cfg, some times it won't, depending on the workaround I try. I was wondering if anyone else has experienced this issue. There is no need to preach how I should not use FakeRAID. I have seen others trying to figure this out so I think a resolution to this issue would be of interest to more than just me. Also, I first installed the system onto a small drive for testing something else. I made a backup with Acronis and was able to restore that onto the RAID mirror by using Universal Restore. When I installed it onto a 500GB without RAID, backed up using the same method, then restored onto a RAID volume of the same size, it would not boot and I got grub errors. Weird. I can post more details, just let me know what you want to see.

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• Windows 7 - media sharing extremely flakey (XBox 360)

  - by Nathan Ridley

  I have constant headaches with Windows Media Library sharing, which I'm using to share my video library (a whole lot of AVI files on my computer's hard drive) with the XBox 360. I have the whole setup working, so setup and basic configuration is not an issue. The issue is that Windows Media Library frequently fails to notice additions and modifications to the "watched" folders. Not only that, but often after I've added something new to the library, it fails to transmit this new library information to the 360, as is demonstrated by the fact that, using that 360, I navigate to my video library and the new folders don't show up in the list. Often the only way to get the 360 to see the changes is to exit out of "Videos" on the 360, then remove all videos from Windows Media Library, go back into videos on the 360 to confirm that nothing is shared, then re-add a few videos (but not too many) in Windows Media Library, then go back into the videos in the 360. The whole thing is a real pain in the bum and I really wish I could just add all my videos to Windows Media Library and have it keep watch without me having to kick it, and have the 360 pick up changes without me having to constantly rebuild the library. Any ideas?

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• K8NDRE motherboard in server fails to complete BIOS load with error 0078

  - by John

  K8NDRE motherboard with 4 sata drives, was running fine. Drives had raid-0 and raid-1 partitions, using mdadm. The onboard raid is disabled. Upon reformatting the drives, setting a new partition structure and new raid partitions, the bios fails to finish loading, with 0078 in the bottom right corner. Tried using completely new set of drives, and bios worked fine. Able to boot from a usb, format the drives, partition them, start raid, and then installed os. Reboot and received the same error from the bios, 0078. Works fine if I unplug the sata drives. Any thoughts? Physical inspection reveals no damage cables, connectors, or capacitors. Server was running happily for over a year, and this is the first problem it has had. Per Michael Hampton's answer: The drives, unjumpered and supporting sata III worked fine originally, and worked fine for formatting and having new partitions and raid installed on them. I did try jumpering one, with no change. If I put a brand new unformatted drive in, the motherboard recognizes it and I can proceed with formatting and installing. When I reboot, I get the 0078. I have 4 sata cables-the board supports 4 drives, so I tried each and no change. I am close to calling the motherboard done.

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• Windows/IIS Hosting :: How much is too much?

  - by bsisupport

  I have 4 Windows 2003 servers running IIS 6. These servers host a bunch of unique web sites (in that they are all different in build/architecture/etc). The code behind these sites range from straight HTML, classic ASP, and 1.1/2.0/3.x flavors of .NET. Some (most) of the sites use a SQL backend, which is hosted on one or two different servers – not the IIS servers themselves. No virtualization on these servers and no load balancing for these particular sites. The problem I’m running into is coming up with some baseline metrics to determine, or basically come up with a “baseline score” to know when a web server has reached its hosting limit. Today, some basic information about each server is used: how much bandwidth does the server pump out, hard drive space availability, and basic (very basic) RAM & CPU utilization (what it looks like at peak traffic times.) I would be grateful if those of you that are 1000x smarter than I am could indulge me with your methods of managing IIS environments. Whether performance monitoring specifics, “score” determination as I’m trying to determine, or the obvious combination of both. Thanks in advance.

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• Is there a utility to visualise / isolate and watch application calls

  - by MyStream

  Note: I'm not sure what to search for so guidance on that may be just as valuable as an answer. I'm looking for a way to visually compare activity of two applications (in this case a webserver with php communicating with the system or mysql or network devices, etc) such that I can compare the performance at a glance. I know there are tools to generate data dumps from benchmarks for apache and some available for php for tracing that you can dump and analyse but what I'm looking for is something that can report performance metrics visually from data on calls (what called what, how long did it take, how much memory did it consume, how can that be represented visually in a call stack) and present it graphically as if it were a topology or layered visual with different elements of system calls occupying different layers. A typical visual may consist of (e.g. using swim diagrams as just one analogy): Network (details here relevant to network diagnostics) | ^ back out v | Linux (details here related to firewall/routing diagnostics) ^ back to network | | V ^ back to system Apache (details here related to web request) | | ^ response to V | apache PHP (etc) PHP---------->other accesses to php files/resources----- | ^ v | MySQL (total time) MySQL | ^ V | Each call listed + time + tables hit/record returned My aim would be to be able to 'inspect' a request/range of requests over a period of time to see what constituted the activity at that point in time and trace it from beginning to end as a diagnostic tool. Is there any such work in this direction? I realise it would be intensive on the server, but the intention is to benchmark and analyse processes against each other for both educational and professional reasons and a visual aid is a great eye-opener compared to raw statistics or dozens of discrete activity vs time graphs. It's hard to show the full cycle. Any pointers welcome. Thanks! FROM COMMENTS: > XHProf in conjunction with other programs such as Perconna toolkit > (percona.com/doc/percona-toolkit/2.0/pt-pmp.html) for mySQL run apache > with httpd -X & (Single threaded debug mode and background) then > attach with strace -> kcache grind

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• organizing my music and my itunes

  - by Cawas

  What can we do to organize our music? I've got over 20k items on my iTunes Library, at least 5k with ratings and play counts, apparently just 12k music files and I can't understand how this question have not been properly answered yet. Maybe there is no answer. I have too many duplicates, broken links, bad music, corrupted files... Well, a big mess with no tags! Probably there's no single software capable of just organizing everything, though I'd love one. Hopefully some time in the near future we all will be able to just sync the cloud of our automagically selected music to the newly created offline copy. But meanwhile... Please, do consider I've at least gave a shot (even while not a full test drive) to every single answer linked here already, plus a few more. I'm fine with using other software (mac too, please) to organize, but I'd need it to sync (retrieve and put back) at least iTunes ratings, because of iPhone and smart playlists. Not looking for iTunes replacement. I'm hoping to hear what you hardcore music organizers out there are using as your own solutions! :) I myself am using way too many tools, getting way too little done and end up going song by song.

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• What's a good solution for file-tagging in linux?

  - by julien

  I've been looking for a way to tag my files and search/filter them based on those tags. Here are my (updated) requirements : any file readable by the user can be tagged freely a user can search for files matching one or several tags files can be moved around without losing the previously associated tags the system could be backed up easily no dependencies on any desktop environment if any gui is involved, there must be a cli fallback I've been hoping for some basic filesystem & coreutils hackery to handle this, but I haven' thought about this hard enough yet. Meanwhile I'll review beagle and metatracker, which have been mentionned here, and see how they perform. Ok so beagle has huge gnome dependencies, and tracker is okish, but still has some dependencies I don't like... Been doing some more research, and the way to go could very well be extended file attributes. That's a native solution for most recent filesystems, but they aren't very well supported yet (most coreutils destroys them by default, cp for example needs the -a flag to preserve them). Would like to hear some thoughts on using them while I try my hand at some hacks myself, eventhough this might warrant a new question.

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• Change default profile directory per group

  - by Joel Coel

  Is it possible to force windows to create profiles for members of one active directory group in a different folder from members in another active directory group? The school here uses DeepFreeze to protect public computers. In a nutshell, DeepFreeze prevents all changes to a hard drive such that every time you restart the machine the disk is identical to it was at the time you froze it. This is a bit different than restoring to an image, in that it never really wrote changes to disk in a permanent way in the first place. This has a few advantages over images: faster recover times, and it's easy to thaw the machine for a few minutes to perform maintenance such as windows updates (which can even be automated). DeepFreeze also allows you to configure a "thawspace" partition, where changes are persistent across reboots. One of the weaknesses of DeepFreeze is that you end up needing to create a new profile every time you log in, unless your profile existed at the time the machine was frozen. And even then, any changes you make to your profile while working on a frozen machine are lost. As students have frequent legitimate needs to log in to our classroom machines, there is currently a lot of cleanup involved from time to time in removing their old profiles and changes, so I want to extend DeepFreeze to protect our classroom computers as well as public computers. The problem is that faculty have a real need to keep a stateful profile locally on these classroom computers. The solution I would like to use is to configure Windows via group policy (or even manually, if that's the way I'll have to do it) to place profile folders on the thawspace partition, but only for members of the faculty security group. Is this possible?

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• CentOS Installation on a Cisco MCS 7800

  - by William

  Hello, I'm having some problems installing CentOS 5.5 Final (i386) Onto my server, a Cisco MCS 7800. The problem comes very early into the installation. When the welcome screen comes up ans gives you the option on how to boot into the DVD, Ill press enter to go into the graphical installer. The Screen will then have a blinking cursor in the top left of the screen and will never go away (I thought that it just might need time but I let it sit for over 5 hours.) I then booted into it again and tried using Linux Text thinking it was a problem with graphical installer. That didn't work, same problem. Then I tried a DVD of RHEL 5 and got the same problem, both graphical and Linux text. At this point i think its a hardware problem. The Server has 2GB of ECC RAM, 1 Pentium 4 CPU @ 3.06GHZ and 2 WD Hard Drives (80GB) Configured for RAID 0. ( Also there is a option in the BIOS for what OS type and that is set to Linux.) If anyone has any idea what is going on, it would be helpful. ================Edit================== ooshro, typing "text" doesn't change a thing. still stuck at the blinking cursor. I looked it up and its really the same thing as typing "linux text", which as stated in the first part of my question, i've already done.

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• Should I keep my ex-employer's data?

  - by Jurily

  Following my brief reign as System Monkey, I am now faced with a dilemma: I did successfully create a backup and a test VM, both on my laptop, as no computer at work had enough free disk space. I didn't delete the backup yet, as it's still the only one of its kind in the company's history. The original is running on a hard drive in continuous use since 2006. There is now only one person left at the company, who knows what a backup is, and they're unlikely to hire someone else, for reasons very closely related to my departure. Last time I tried to talk to them about the importance of backups, they thought I was threatening them. Should I keep it? Pros: I get to save people from their own stupidity (the unofficial sysadmin motto, as far as I know) I get to say "I told you so" when they come begging for help, and feel good about it I get to say nice things about myself on my next job interview Nice clean conscience Bonus rep with the appropriate deities Cons: Legal problems: even if I do help them out with it, they might just sue me for keeping it anyway, although given the circumstances I think I have a good case Legal problems: given the nature of the job and their security, if something leaks, I'm a likely target for retaliation Legal problems: whatever else I didn't think about I need more space for porn. Legal problems. What would you do?

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• What's the best way to clone multiple PCs from one machine?

  - by Jason T.

  Where I work we have dozens and dozens of old ThinkPad laptops. A lot of these can be reused but not for our needs. They have been long since replaced. The higher-ups have decided to donate them to charity. For better or for worse I have been tasked with reimaging them. I took a laptop and installed the factory copy of Windows, updated it, configured it appropriately. Now I'm trying to reimage it to dozens of other laptops. What's some good software to do this? First I used clonezilla to clone the hdd in the laptop to an internal drive in an external enclosure and it worked. Then I tried taking the base image out and connecting it externally to a laptop that needed to be imaged and I got it to work a few times. So far so good, right? Well once I informed my boss of my findings and what I would want to do then the images started to not work on new laptops. One of three things would happen: The Thinkpads would just blink at me and Windows wouldn't load. Or Windows would load but freeze within two minutes. Last but not least the laptops would BSOD during the Windows XP bootup. These laptops are not going to be used by the company. They're going to charity. So can anyone else recommend a way to reimage multiple laptops?

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• Can't mount Linux usb disk. It just create /dev/sg device but no /dev/sd

  - by MTilsted

  I have a Corsair R60 ssd disk which is a disk with both sata and usb connectors. But the usb thing seems to be a bit non-standard, or maybe its just my fedora linux. When I insert the disk using a usb cabel to a running Fedora 14 linux system, a device called /dev/sg3 is added but that is all. No new /dev/sd* device is created so I can't mount the disk. If I look at cat /proc/scsi/sg/device_strs I get ATA Hitachi HTS54321 FB2O HL-DT-ST DVDRAM GSA-T50N RP05 Seagate Desktop 0130 Corsair CSSD-R60GB2 So the disk is there. (The last entry) but my linux will for some reason not see it as a usb hard disk. When I insert other usb disks they work fine. It is only this specific disk which causes problems. I have tried on 3 different computers with the same result. A hint to the problem may be that if I add the disk to a windows system(With usb) the disk is called "A fixed disk" and not a portable disk as expected. The disk works fine with linux If i connect it with the sata cabel, but I would really like to have it working with usb too. (To mount it on computers without sata). Added: I did try to mount /dev/sg3 but mount say that its not a block device. (File say Its a character special device). Added output from dmesg: [ 97.454073] usb 7-1: USB disconnect, address 2 [ 105.913055] hub 2-0:1.0: unable to enumerate USB device on port 3 [ 107.048054] usb 2-3: new high speed USB device using ehci_hcd and address 5 [ 107.162900] usb 2-3: New USB device found, idVendor=1b1c, idProduct=1ab8 [ 107.162903] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [ 107.162906] usb 2-3: Product: CSSD-R60GB2 [ 107.162908] usb 2-3: Manufacturer: Corsair [ 107.162910] usb 2-3: SerialNumber: 10111441000000990069 [ 107.167651] scsi7 : usb-storage 2-3:1.0 [ 108.195543] scsi 7:0:0:0: Direct-Access Corsair CSSD-R60GB2 PQ: 1 ANSI: 0 [ 108.197732] scsi 7:0:0:0: Attached scsi generic sg3 type 0

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• Simple electric DC question. Current consumption

  - by Bobb

  Suppose you have DC power supply and a consumer connected to it (i.e. computer PSU and a hard drive). Suppose PSU which was supplied with the consumer has output 5V 1A. So I assume that the consumer should not consume more than 1A. Suppose the original PSU is broken now and I want to replace it with the one I have which is 5V 10A. My guess is that current is something which depends on the consumer. So if the consumer consumes normally 1A then it will not consume more than that even if it is connected to 10A PSU. In other word - am I right assuming that the consumer will not burn out being connected to a power supply with higher current output? P.S. my understanding is that voltage is something independent from the consumer. If you give it higher voltage it will burn (voltage is from PSU to the consumer). However current must be in opposite - consumer sucks as much current as it need not as much as PSU can provide (of course given that max PSU current is greater than the consumer needs)

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• Is there a standard method for assigning nameservers to servers in a Windows domain?

  - by HopelessN00b

  As the title asks, I'm wondering if there's any standard or "best practice" for how to actually assign nameservers (DNS) and manage the nameserver configuration for client servers on a Windows domain. I'm talking about the setting circled in the below image, in case the language of the question is not clear enough: This is for a large, multi-site environment, where ideally/hopefully all servers point at their site's Domain Controller as the primary DNS server, and a DNS server at a different site as the secondary DNS server. For simplicity's sake, we can say that the secondary server would be the Domain Controller at the home site for everyone, and there are no tertiary DNS servers (even though that's not actually the case). Try as I might, I can't seem to find a GPO setting for this (at least on FL 2003 R2, the Computer Configuration - Administrative Templates - Network - DNS Client - DNS Servers GPO is Supported on: Windows XP Professional only), and I find it rather hard to believe that the "best"/"standard" solution would therefore be either scripting up something to apply the DNS settings per site, or using a DHCP server to push those configurations out to the other servers via the DHCP Scope Options. So, is there a standard way of managing this configuration? (That's hopefully not "a script" or "DHCP Scope Option.)

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• Old scheduled task still being started, but can't find it.

  - by JvO

  System: Windows XP Home Summary: Some scheduled task is still being started by Windows, but I can't find it, nor determine where its configuration has been stored. This is turning into a mystery for me... I set up a Windows XP Home machine to run a task at 7:00 AM, using the Task manager. This was a clean install, no users defined, so you got straight to the desktop after starting the machine. The filesystem uses NTFS. Later on, I needed to introduce users, so I created one (named Sam) with administrator privileges. After this I noticed that the scheduled task failed, most likely due to privilege errors (i.e. can't write to a network drive). So I want to delete the old task, and add it again with the correct user credentials. However.... I can't find the old task!! I know it is still being executed at 7:00 AM, but there's no mention anywhere on the system of this task. I've looked in c:\windows\tasks for .job files, but there's only the "MP Scheduled Scan.job" from Security Essentials. I've searched the whole disk for mention of the batch file that is being run, but can't find it. So why is this old task still running, and more importantly, why can't I find it? Would it have something to do with introducing users on XP?

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• Routing public IPs (each a /32) through a VPN to another server

  - by Lee S

  Hopefully the title makes sense; I have a server currently in a colo facility, with many IP addresses routed to it. They are individual IPs and not in a contiguous block. Due to vastly improved connectivity (fibre) at home I am slowly bringing my infrastructure in-house for managability and eventually, cost savings. What I would like to do though is use the IP addresses allocated to my existing server, at home. I have an IP block allocated to me on my new ISP connection, but for a couple of reasons I'd like to make use of the colo ones for now: Ease of transition - lots of domains, dns, hard-coded IPs in programs, etc. Connectivity fallback. If my primary line goes down and switches to fallback 1 (dsl) or fallback 2 (4G), I lose access to the ISP-allocated IP block of IPs that are only presented on the primary WAN interface. What I'd like to achieve is my home virtualisation server (Proxmox/Debian-based) "dials in" to the colo server in the colo facility (also Proxmox/Debian) via VPN or similar, and gets to make use of the IP addresses that currently terminate on the colo box. If the primary connection to my ISP goes down and one of the fallback routes kicks in, the VPN tunnel will just time out and then be re-established on the backup connection instead. I'm sure this is doable, but I have no idea how. I'm not afraid to get my hands dirty, I just don't really know where to start?

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• Toshiba A205-5804 freezes when plugged in

  - by heron

  Well I have a Toshiba A205-5804 and the problem is that the screen freezes anytime I plug the pc into the external power supply, not as most of the computers having the same issue, my computer DOES freeze in safe mode, and I really can't bear this problem for much longer... It's not an overheating problem, the computer is not getting hot or anything related, I've already tried changing the AC adapter, booting only with AC and no battery, and also all of these suggestions: Try changing the following setting in the bios setup, under the 'Advanced' tab Dynamic CPU Frequency: Mode = Always Low (NOT DYNAMIC) My laptop has been running on AC power without a problem for 24hours, including many restarts, and when I went back to the original bios setting, the problem returned almost straight away. EDIT Other suggestions I found on the web from here and here: Set the power plan to high performance Set the power plan to "Minimal Power Management" (1 and 2 do conflict) Start - Control Panel - Device Manager -- Processor - disable one of two processors - reboot normally 4.Do this: Only plug battery into laptop Turn on the laptop and start Windows normally Plug AC adapter into laptop, the screen will freeze Leave the laptop the way it is for 12-24 hours After 12-24 hours, turn it off the hard way Once it is turned off, turn it back on. The laptop is working now. I have no idea of what can it be...

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