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• WSUS performance for unneeded updates

  - by mhouston100

  We have a WSUS server serving around 300 PC's and a couple of dozen servers and a discussion came up at work as to what products to include. We have a single SQL 2005 instance on one of the servers and it has NEVER been updated. My first thought was to just tick the box for SQL 2005 and let WSUS do it's thing to upgrade to the latest service pack at least. One of the other guys here has the opinion that having updates that are relevant to only a small selection of hosts would effect the performance of WSUS as a whole, claiming that each update does a 'check' against all the hosts or something similar. My argument is that manually updating these servers is obviously not working as the admins are not paying attention to what is needed. So my question is: Do updates that only effect a sub-set of the hosts effect the overall performance of the WSUS server in relation to ALL the hosts? (disk space is not an issue at this point) Is there any performance justification for or against manually updating small amounts of products? Basically I'm needing a rebuttal against his argument and I'm unable to find any concrete documentation to prove him wrong.

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• Computer slow after installing 32GB RAM

  - by John Gilmore

  I'm currently running very large network simulations for my PhD research, for which I need lots of RAM. I have a Core i7 2600K processor with a Gigabyte GA-Z68AP-D3 motherboard, running Windows 7 professional 64bit. I bought the system with 8GB (2x4GB) DDR3 1600 MHz Corsair Vengeance RAM and the system ran like a dream. I'm planning to upscale my simulations so I removed the 2x4GB RAM and installed 4x8GB DDR 1600 MHz Corsair Vengeance RAM. When I rebooted the system, boot time was much longer than usual (10 mins just to get to login screen). After logging in, the whole system was unresponsive. I tried playing some games (Bioshock 2), but it was unplayable. I've not had this problem before and I have an ATI Radeon HD 5850 graphics card, so that's not the problem. The only thing that's changed is the RAM. I've looked through the specifications of Windows, my motherboard and my CPU and they all state that 32GB of RAM is supported. Does anyone have an idea of what's going on? Any help would be greatly appreciated.

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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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• Where did my backup files go? Can they be recovered?

  - by Ken

  I just purchased a Western Digital Essential SE 1TB external hard drive from Best Buy at their recommendation. I then exchanged it for a Toshiba Canvio (I think that was the name). I have a Toshiba Qosmio X505-Q898. The Canvio locked up my computer and rewrote some kind of OS file, and erased all the restore points as well as the system image backup (according to Best Buy) just by plugging it in for the first time. Never even got to the install part or anything -- plugged it in and fried my computer. They spent about an hour and a half on my computer and got it back to a somewhat working condition and gave me access to my files. So now they say I have to back it up using my recovery disk and rewriting my OS. Enter the Essential. Brought it home last night, plugged it in and installed everything. Works perfect, no problems. Backed up everything on it. I unplugged and plugged it twice to make sure that everything was on it. Essential told me it had both the HDD and SSD backed up. So I reinstalled my OS. Plugged the Essential in and everything loads right up. Went to retrieve my files and the Western Digital has nothing on it. It shows all my music, pics, ETC. as still being on my computer and needing to be backed up, but since there are no files on my computer now. Where is this information coming from and where did my files go? It's about 810GB worth of files I've amassed over several years. Is there any way to recover data from this? I plan to contact Western Digital and Best Buy, just thought I would check here too. Any advice will be appreciated as a lot of these files are invaluable to me.

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• Photoshop CS5 performance over network drive (cifs)

  - by grub

  Hello Everyone I did install a QNAP NAS TS410 for a customer (professional photographer) with 3 Hitachi Deskstar 7200rpm 2TB disk configured as RAID5. The NAS and the workstations are connected over a Gigabit network. He and his co-worker are accessing the photos (about 1TB of photos) over a mapped network drive from their windows machines (Windows XP - 32bit and Windows 7 Ultimate - 32bit). Both are using Photoshop CS5 to edit the photos. The problem is that to save a edited photo takes a really long time, it takes about 3 times as long to save a photo as to open it. After some tests I can exclude the network, the NAS and the windows machines as source of the issue. I think the problem is the Photoshop software and its handling of the network drives. Officially network drives are not supported by Adobe. I do not have any experience with the Adobe products, especially with Adobe Photoshop CS5. What are your recommendation to solve the performance issue? Should my customer copy the photos to the local drive, edit them and upload them again to the network drive or is Adobe Drive or Adobe Version Cue the answer? One requirement is that the photos need to be accessible / editable from both computers even when one of them is offline. Adobe Version Cue needs a dedicated service running to be usable, so this solution is not possible as far as I understand the Cue software. Thank you for your input to this issue and have a nice day :-) Greetings grub

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• How can I upgradge from Ubuntu Intrepid Ibex 8.10 to Jaunty 9.04 when old-releases no longer has the necessary packages?

  - by tommy chheng

  I changed my sources.list to: deb http://old-releases.ubuntu.com/ubuntu/ intrepid main restricted universe multiverse deb http://old-releases.ubuntu.com/ubuntu/ intrepid-updates main restricted universe multiverse deb http://old-releases.ubuntu.com/ubuntu/ intrepid-security main restricted universe multiverse I tried installing sudo apt-get install update-manager-core but i get this error: 1 upgraded, 3 newly installed, 0 to remove and 40 not upgraded. Need to get 2506kB/2555kB of archives. After this operation, 4346kB of additional disk space will be used. Do you want to continue [Y/n]? Y Err http://old-releases.ubuntu.com intrepid-updates/main update-manager-core 1:0.93.34 404 Not Found Err http://old-releases.ubuntu.com intrepid-security/main dpkg 1.14.20ubuntu6.3 404 Not Found Failed to fetch http://old-releases.ubuntu.com/ubuntu/pool/main/d/dpkg/dpkg_1.14.20ubuntu6.3_amd64.deb 404 Not Found Failed to fetch http://old-releases.ubuntu.com/ubuntu/pool/main/u/update-manager/update-manager-core_0.93.34_amd64.deb 404 Not Found E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? Running apt-get update or --fix-missing returns the same errors. How can I successfully upgrade from Intrepid Ibex to Jaunty 9.04?

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• SSD as primary or secondary drive on a small Linux server?

  - by Alex Martelli

  I'm pensioning off my 10-years-old home server and replacing it with an Ubuntu 10.04 box. The two storage devices are a Western Digital Caviar Green 2.0TB HD and an Intel X25-M 34nm Gen 2 80GB SATA II 2.5inch SSD (the box has 8GB RAM and an i5 750, if it matters). I don't care much about boot times (since I don't plan to reboot all that often;-); the main frequent, performance-demanding task will be (re)building large open source C or C++ software packages from sources (as an open source contributor, I do that often). So, I thought I'd keep the SSD as the secondary drive and the HD as the primary one, using the SSD mostly for the files that can otherwise demand a lot of seeking (esp. in a parallel make). However, the friendly vendor (perhaps more experienced in Windows systems than in Linux ones) thinks the "normal" way to configure the machine would be with the SSD as the primary drive. I'm pretty rusty on configuring and tuning systems, so, I thought I'd better double check on SuperUser... thanks in advance for advice about this choice!

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• How do you backup your own files? [on hold]

  - by Antonis Christofides

  I'm a system administrator and I use rsnapshot to backup some servers, duplicity for some others. Both work fine, each one with advantages and disadvantages. Despite that, I am at a loss on how to backup my own private files. I'd use duplicity to automatically backup my files to a remote server; but the problem is that once in a while I must do a full backup. My emails and important files are 9G, and I expect this to increase. Uploading through aDSL at 1Mbit would be 20 hours. Too much. rsnapshot doesn't require periodic full backups (only the first time), but it must be running on the remote server and have a means to connect to my computer; if the server is compromised (or simply if the NSA decides to use it), my own machine is also compromised. Not good. The only solution I've come up with is use encfs, use unison to synchronize the files to a remote server, and use duplicity or rsnapshot on the remote server to backup these files. In that case, the question is whether I can sync the files on many computers; is it possible for encfs to be used with the same key on many computers? I also think that if I append one character to the unencrypted file, its encrypted encfs counterpart might change a lot, so that incrementals with duplicity would be less efficient—but not a big deal. Maybe also, when I need to restore a file, finding the correct file to restore could be a pain, because of filename encryption. I wonder whether there is any other possibility that I've overlooked. Maybe I'm asking too much for my personal use, and I should settle with an external disk?

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• Ubuntu 9.04: Ripping CDs with grip?

  - by chris

  I tried to rip a CD tonight, and couldn't figure out how to configure grip - /dev/cdrom doesn't seem to be the mount point for music CDs any more. How can I configure grip to find CDs? Update: /etc/fstab has /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0 But there's nothing visible in /media/cdrom0 (or /media/cdrom, which is a symlink to cdrom0) There's an icon on the desktop labeled "Audio Disk" and opening it shows the .wav files on the CD. The location is cdda://sr0/, but grip doesn't like that either. Trying to manually mount /dev/sr0, I get $ sudo mount -t auto /dev/sr0 foo/ mount: block device /dev/sr0 is write-protected, mounting read-only mount: you must specify the filesystem type Update 2: Tried to change the media handling preferences (From a file browser, Edit-Preferences, Media, CD Audio) to "Do Nothing". CD Still doesn't mount. Update 3: With an audio CD in the drive: $ ls -l /dev/ | grep cd lrwxrwxrwx 1 root root 3 2009-09-15 22:13 cdrom1 -> sr0 lrwxrwxrwx 1 root root 3 2009-09-15 22:13 cdrw1 -> sr0 drwxr-xr-x 2 root root 60 2009-09-15 22:13 pktcdvd lrwxrwxrwx 1 root root 3 2009-09-15 22:13 scd0 -> sr0 crw-rw----+ 1 root cdrom 21, 2 2009-09-15 22:13 sg2 brw-rw----+ 1 root cdrom 11, 0 2009-09-15 22:13 sr0

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• backup an existing linux server to a virtualbox virtual machine

  - by user146526

  I have some servers and VPSs to many companies across the world. I want to back them up locally. I have some backup solutions enabled to remote hosts, but I want to have a local backup on a computer at home. What I am thinking is: 1) Create a virtualbox virtual machine, install the same version linux as the server. 2) Use rsync to backup the server to the local virtualbox machine. (something like rsync -av --delete --progress --exclude '/dev/' --exclude '/proc/' root@server_ip:// / ) 3) Repeat the command every few days update files. 4) In case of a hard disk failure, or any other bad event, reverse the rsync command and get the files back and continue my bussiness. I tried it with 2 openvz VPS, the one was a backup of the other. I also tried to transfer normal linux server host to openvz machine and it worked great. That way looks pretty clean and easy to me, this is the kind of solution I am looking for. However I need to be sure that this will work if I am going to do it. The question is, will that work ok ? Does anyone see any problem with that ? Do you have any other suggestions ? Thanks

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• Windows 7 Taskbar resets on every login

  - by Arne Mertz

  I like to reorder my Taskbar a bit, other than the Windows 7 default is. I use two "rows", the lower is for quicklaunch and other toolbars: This works perfectly, as long as I don't log off from the computer. Every time I log in, Windows 7 has messed up/reset the toolbar positions like this: So I have to drag them into position again and again, every morning. Fixing the taskbar positions won't help, I tried to google for the problem but it does not seem to be very common. Does anyone recognize that problem and has a solution? Update: This is not the AutoLogon bug. AutoLogon is off. We have installed Novell at our company, and it does not matter wether I log directly onto the Novell network or only to the computer first and to Novell later. Update2: I get the same issue when I logon without Novell, i.e. when I log on only to the computer. When I boot in safe mode, the taskbar looks essentially the same: Update3: KB979155 says it's "not applicable to my system". Creating a neew user is not an option since I don't have the admin privileges to do that - I have almost any other local admin privileges, though.

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• What's throttling the database?

  - by Troels Arvin

  Hardware: Intel x86_64 with 192GB of RAM. OS: CentOS 5.4 x86_64. DBMS: DB2 v. 9.7.1 64 bit. During certain special workloads (e.g. parallel REORGs/RUNSTATs), I've seen the server transporting 450MB/s with 25000IO/s (yes, there is probably some storage system caching happening here) while all CPU cores were happily working in an even mix of usermode/wait. And disk benchmark tools can also bring some very satisfying bandwith and IO/s numbers to the table. On the other hand, we also have another scenario: A single rather complex query with at least one large table scan. db2's "list applications" reports that the query is Executing (not locked). IO: At most 10MB/s, 500 IO/s; CPU: two cores in 99.9% wait state, all other cores 100% idle. The tables which the query reads from have been altered to have LOCKSIZE=TABLE, so I would think that lock list work is zero. What's going on in such a situation? What tools/snapshots/... can I use to gain better insight in such a case?

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• Bad HD and robocopy

  - by acidzombie24

  After my HD gave me crc errors I wanted to copy one drive to another and picked up a new 1TB hd. I am using the command robocopy G: J: /MIR /COPYALL /ZB First it tried copying the file a few times (i didnt count, its not in my window anymore) and got an access denied error, error 5. Then it tried again and locked up. I tried copying that specific file (14mb) and windows says "cant read from source file or disk". I started robocopy again. Hopefully it will ignore it after a fail attempt or two but what options can i use to say if it doesnt work continue to the next file. It looked like that is what it was doing but for this last one it repeated more then 4times and locked up finally. I'm open to other copy solutions. I do prefer built in solutions. I am using windows 7 Also how might i do this without the /MIR option. Is /S /E good enough? flag reference here -edit- i see i can control retries with /R: but i am still open to alternative solutions.

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• External Dell Display doesn't work with MacBook Pro (2011) after Thunderbolt Firmware Update (1.0 and 1.2)

  - by tom

  Today two Thunderbolt Firmware Updates (1.0 and 1.2) became available for my MacBook Pro (Early 2011). After installing both, my external monitor, a Dell U2713HM, does no longer work. The system detects the display, but the display shows only black. An Apple Thunderbolt display works fine and a MacBook Air can use the Dell monitor without problems. My MacBook Pro can use the Dell monitor just fine when I boot from a USB stick. Therefore, clearly the Thunderbolt Firmware Update seems to be the problem. Does anyone have the same problem? Any solutions or workarounds? I guess there is no way to remove a Thunderbolt Firmware Update once it's installed, right? Update 24.10.2013: Is there no one else with this problem? In the meantime I tried three different cables – none worked. My colleague with the same generation MacBook Pro also can't use my display after installing the firmware update. All colleagues with MacBook Airs and newer MacBook Pros (all didn't receive the firmware update) can use the display. Update 29.10.2013: Wow, ok today my new MacBook Pro Retina 13' (Late 2013) arrived. Guess what, I cannot use the display with it. Only HDMI works – not with the full resolution.

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• "could not find suitable fingerprints matched to available hardware" error

  - by Alex

  I have a thinkpad t61 with a UPEK fingerprint reader. I'm running ubuntu 9.10, with fprint installed. Everything works fine (I am able to swipe my fingerprint to authenticate any permission dialogues or "sudo" prompts successfully) except for actually logging onto my laptop when I boot up or end my session. I receive an error below the gnome login that says "Could not locate any suitable fingerprints matched to available hardware." What is causing this? here are the contents of /etc/pam.d/common-auth file # # /etc/pam.d/common-auth - authentication settings common to all services # # This file is included from other service-specific PAM config files, # and should contain a list of the authentication modules that define # the central authentication scheme for use on the system # (e.g., /etc/shadow, LDAP, Kerberos, etc.). The default is to use the # traditional Unix authentication mechanisms. # # As of pam 1.0.1-6, this file is managed by pam-auth-update by default. # To take advantage of this, it is recommended that you configure any # local modules either before or after the default block, and use # pam-auth-update to manage selection of other modules. See # pam-auth-update(8) for details. # here are the per-package modules (the "Primary" block) auth sufficient pam_fprint.so auth [success=1 default=ignore] pam_unix.so nullok_secure # here's the fallback if no module succeeds auth requisite pam_deny.so # prime the stack with a positive return value if there isn't one already; # this avoids us returning an error just because nothing sets a success code # since the modules above will each just jump around auth required pam_permit.so # and here are more per-package modules (the "Additional" block) auth optional pam_ecryptfs.so unwrap # end of pam-auth-update config #auth sufficient pam_fprint.so #auth required pam_unix.so nullok_secure

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• How is network mounted software executed?

  - by CptSupermrkt

  I would like to understand how network mounted software works. For example, at my place of work, we have a software server. Each client machine (hundreds of them) automatically mounts directories from the software server on boot. For example, a program like Matlab is installed just once on the software server, but each client machine can start up an instance of Matlab. What is going on under the hood? Let's say I run /opt/bin/matlab and /opt/ is mounted from the software server, what happens when I press Enter to execute matlab on a client machine? The process is on the client machine, and I've already narrowed down that there isn't any implicit or hidden file transfer (i.e. copying matlab to my machine temporarily for that session) by running matlab on a computer with nearly zero disk space (i.e. not enough room to transfer). Since Matlab was installed on the server, how is my client computer executing it? What mechanism is controlling this? What is happening behind the scenes?

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• Is there a clean way to obtain exclusive access to a physical partition under Windows?

  - by zneak

  Hey guys, I'm trying, under Windows 7, to run a virtual machine with VMWare Player from an OS installed on a physical partition. However, when I boot the virtual machine, VMWare Player says that it couldn't access the physical drive for writing. This seems to be a generally acknowledged problem in the VMWare community, as Windows Vista introduced a compelling new security feature that makes it impossible to write to a raw drive without obtaining exclusive access to it first. I have googled the issue and found a few workarounds. However, the clean ones seem to only work on whole physical disks, and not on partitions. So I would be left with the dirty solution. In short, it meddles with the MBR to erase any trace of the partitions to use, makes Windows forget about them, then restores the MBR so we can launch the VM. I'm not sure I want to do that. Is there a way to let VMWare acquire exclusive access to the partition without requiring me to nuke it away? What I'd be looking for, I suppose, is a way to put just partitions offline instead of whole physical drives.

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• Why is MySQL unable to open hosts.allow/hosts.deny?

  - by HonoredMule

  I have a storage server running Nexenta (OpenSolaris kernel, Ubuntu userspace) with MySQL on top of a ZFS storage array, using innodb_file_per_table and ulimit -n set to 8K. mysqltuner.pl confirms the file limit and claims there are 169 files. The following command: pfiles `fuser -c / 2>/dev/null indicates one mysqld process having 485 file/device descriptors (and they're almost all for files) so I don't know how reliable the tuning script is, but it is still way less than 8K and this list also finds no other process which is close to it's limit. The global total number of descriptors in use is around 1K. So what can cause mysqld to be constantly streaming the following errors? [date] [host] mysqld[pid]: warning: cannot open /etc/hosts.allow: Too many open files [date] [host] mysqld[pid]: warning: cannot open /etc/hosts.deny: Too many open files Everything appears to actually be operating fine, but the issue is constantly flooding the admin console and starts right away on a fresh boot (not only reproducible, but always from mysqld and always the hosts files, whose permissions are the default -rw-r--r-- 1 root root). I could, of course, suppress it from the admin console but I'd rather get to the bottom of it and still allow mysqld warnings/errors to reach the admin console. EDIT: not only is the actual file descriptor well within sane limits, the issue also persists (with immediate appearance) even with the file limit raised to 65535 and always only on hosts.allow/deny.

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• Ubuntu 12.04 Very slow especially with Android Studio

  - by Nada

  I have an old laptop with the following specification: Memory: 485 MiB, Processor: Genuine intel CPU T2300 @ 1.66 GHz ×2, OS Type: 32 bit, Disk: 78.1 GB, I installed on it Ubuntu 12.04 LTS and I noticed that the overall system is very slow in responding. I tried to search about that in the internet and I found some articles talking about how to make Ubuntu 12.04 LTS run fast I applied all what they said including download LXDE desktop environment and then nothing different in the system response time. Then I need to develop some android applications so, I download Android Studio (Beta) 0.8.6. The problem became worse than before whenever I tried to open the Android Studio the screen is frozen for some minutes then it took time to download the projects and initialize the work space also, when I tried to move the cursor he is move very slowly. When I tried to run my first application on the AVD it took three hours and still not run yet. I delete the Android Studio and install it again several times, I was trying to solve the problem but still nothing change. Please if you have any suggestions that may help me make my laptop and Android Studio work faster I will appreciate it for you. Thank you in advance.

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• Recommend a UK based VPS host equivalent to Dreamhost [closed]

  - by Pez Cuckow

  I appreciate this question could be considered subjective and argumentative so can people make recommendations rather than arguing about the best. I believe the "correct" answer is the one closest to what I am looking for. Basically I live in the UK but have been using the US based Dreamhost for about 6 years now, and my web projects are getting to the scale where the websites need to the UK based to cope with the demand and load. I originally had shared hosting with Dreamhost but upgraded to a VPS a while ago, getting 512mb of RAM, unlimited disk space, bandwidth and domains for $30. Their control panel is a custom easy to use build that they have created in house and offers features very similar to other web panels (as far as I am aware). So basically my question boils down to, is there anywhere that offers an equivalent package? In all honesty as long as I have over 50gb HDD space and unlimited domains it doesn't really matter? Are there any VPS providers you would recommend as reliable? I promise to check every link posted, many thanks for your time!

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• RAID-capable 3.5" SATA Drives

  - by nroam

  I recently purchased a pair of 1TB Western Digital WD1002FBYS RE3 drives for use in an external RAID enclosure. I have found that they tend to drop out of the array after a while. Thinking it was the enclosure I tried them on another one but found the same issue. So a bit of googling and I found http://www.tomshardware.com/forum/251076-32-raid-issues-western-digital-hard-disk which suggests that: "WD's "RE" (RAID Edition) HDDs support Time-Limited Error Recovery ("TLER" ): http://www.wdc.com/en/products/productcatalog.asp?language=en As a non-TLER HDD fills up with data, the error detection firmware might take too long, and the RAID controller may drop that HDD from a RAID array." So now I wonder what SATA drives have firmware which is compatible with RAID arrays (esp. RAID 1, 5, but not 0)? I have not been able to come up with the magic set of keywords to ellicit the answer from Google. However, various sites suggest that Seagate & Hitachi are in general OK. Does anyone have any generic (or even specific) guidance on how to work out if a drive's firmware may harbour code that is potentially an issue in a RAID0 setting other than stating that it must be 'enterprise' ready?

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• How to improve Samba performance on VirtualBox machine?

  - by ColinM

  I am running a Windows 7 64bit host and Ubuntu 9.04 32bit guest inside of VirtualBox 4.0.0 on a laptop which has internet connectivity via Wifi. The main use is writing code for which I use Netbeans. My dev environment is hte virtual machine and I use Samba on the VM to share the code directory so that I can use Netbeans on the host as my IDE. Unfortunately Netbeans does a lot of disk access and due to the poor Samba performance it makes the IDE hardly usable. How can I improve performance of the Samba share? On my desktop it isn't so bad but I don't know what the difference would be since they are similar setups (Win 7 hosts, cloned guests, SSDs, Vbox guests using SATA in AHCI mode, etc..). With Bridged networking is the performance between the host and guest limited by the physical hardware (Intel 6200 AGN on laptop)? I switched to Host-only and it didn't seem to improve performance at all. To clarify bad performance, I used 7zip to zip a project directory and got 19kbs to 500kbs depending on the size of the files being zipped. On my desktop it was in the ~10mbs range. Any tips for VirtualBox/Samba configuration to get improve the performance? I am using Samba 3.3.2. Hopefully Samba with SMB2 support will be released soon..

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• Automatic o/s reset on a dedicated internet browsing Windows 7 pc.

  - by camelCase

  I have just purchased a new Acer Revo nettop PC for dedicated internet browsing. It will be the only pc on a home network. My original plan was to install one virtual PC for family browsing, another for remote web based server administration and ban browser use from the host Windows 7 o/s. The idea was that I could recover to a fresh VHD image once a week to eliminate any build up of malware inside the browser VMs. However now I am looking for alternative solutions since the Intel Atom cpu does not have hardware VT support which Windows Virtual PC requires. Would it be possible to engineer some type of routine overnight host o/s wipe and recovery? I guess cyber cafes do something like this? The only user data that would need to be retained across a recovery would be browser bookmarks but these could be exported to remote service. Edit 1: I am thinking the o/s reset could be done via some disk image recovery process. Edit 2: Just had a brainwave. Routine browsing could be done via the new Google Chrome O/S. I have just seen a video of the Google Chrome o/s booting off a usb pen drive in seconds.

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• Moving a lot of small files between servers using rsync

  - by Adirael

  Hello guys, I'm moving a lot of files (about 2 millions) between two servers on different locations using rsync over ssh, it seems to work fine but I just realised I'm losing some files on the process. I got server 1, with the original data, and server 2, with the copy. Server 1 runs CentOS 5 and Server 2 runs on Ubuntu 10. I'm doing the transfer on the Server's 2 command line like this: rsync -e ssh -avzn usr@server1:/remote/path /local/path The first file movement I did using tar, but I didn't though of piping it through ssh and it failed cause the disk on server 1 was almost full, so I transfered it anyways (it was about 200GB) and got about 80% of the files. Then I piped another tar with the rest of the files (they're in folders, I got 100 folders with about 30 subfolders each, with files inside) and now I got everything on server 2. I wanted to be sure, so I my two options are getting the md5sum of all the files and check them or running an rsync on server 2 against server 1, that's what I did. It got some missing stuff and now it says there's nothing more to do (DRY RUN). But I got at least two files that are missing inside a subfolder. I ran that same rsync on that folder, but still dry run. Am I doing something wrong? Thanks, and sorry for the wall of text.

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• Need Help Scoping a Server to use for study (MCITP Ent Admin + SharePoint 2010)

  - by AVFamily76

  i need to study for mcitp, but i also need to study for sharepoint 2010 i have a poweredge 1850 with two single-core CPUs + two 73G drives - it kills me on electricity, so don't want to use it, and it won't do VT, but it could be one of three boxes for a lab that's cheap, but will cost a lot on electricity i was thinking . . . OPTION #1 Opteron 4170 HE (50 watt chip), 6-core, only two-bills ($200), but the board's are $250, so that's an $800 box, then get another box to dual-boot Win7/Hyper-V on the cheap...? OPTION #2 Used Quad - but how many VM's that are really banging away could it run at same time? (Server 2008r2, SQL 2008r2, Search Server) OPTION #3 Study from books and just get one box that can run two VM's at same time, even if slowly. the last time i had and used a home lab was five years ago when i had a DC, SQL, Exchange and business app box, that's where i got my server skills was just banging on it for four years, but didn't read any books, so now i have to get certified and know the material, and just am not sure how much attention i should pay to the box i use versus the studying time and reading. sorry it's a subjective question, and am obviously open to all sorts of abuse here, but hope you can tell me also how many VM's i can run at the same time given what they'll be doing (SQL and SharePoint FAST search server are resource hungry) thanks!

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