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• How to use 3T SAS HDDs which aren't supported by Dell PERC 6i

  - by Sunry

  We bought several 3T SAS hard disks want to use with our Dell R710 server. But we found our R710 can't recognize the 3T hd, and then we dig out the raid card is PERC 6i which doesn't support it. Contacted with Dell that H700 and H800 support 3T hd, thought we can buy a H700 , but the SAS cable is not available in the market right now. And it seems very hard for us to change the raid card, also no suitable tools to tease the special screws. So I want to know if any other method to use these 3T hds instead of putting them in the warehouse? Can I low formatting it to 2TB, and plug it into Dell R710 to use? Or a SAS to USB adapter to use it as USB external disk? I just want to use them by Dell R710 even external.

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• Why has my Mac been running fsck_hfs for two days now?

  - by Nate

  I first noticed that fsck_hfs was running, taking up 50-75% of a CPU, yesterday. It continues to run today. ps shows that it is doing /sbin/fsck_hfs -f -n -x -E /dev/disk3. Only problem: I don’t think I have a /dev/disk3. Why is it running? Will it ever finish? Can I kill it? What is /dev/disk3? Could it be my Time Machine volume, which is not mounted at the moment? System Info: MacBook Pro (2008). It has two disks installed—the internal disk (/dev/disk1) and a PC Card SSD (/dev/disk0, surprisingly). It connects to a remote Time Machine volume attached to an Airport Extreme base station.

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• Disable RAID Controller

  - by B.Mr.W.

  I have some decent HP Proliants server that come with "HP Smart Array P410i Controller" enabled, I am using these boxes to set up a Hadoop cluster and I know, RAID is for sure a no-no for Hadoop since the application itself will take care of data redundancy and extra intelligence provided by RAID won't be helpful and might turn down the performance. I tried to disable the devices at the BIOS and the box cannot even access the disk afterwards. So I am assuming the controller is sitting between disks and mother board, and we have to turn it on and configure it to "level0" or something like that. I am wondering what should I do to "disable" the RAID functionality so it will fit into the Hadoop environment.

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• Scheduling VMWare ESXi 4.1 VM Restart

  - by Robin Day

  We had a virtual machine running on a VMWare Server host on Windows Server 2003. The machine is set up with non persistent disks. We had a windows task schedule set up that ran a batch file to reset the machine each week so that it returned to it's original state. The batch file that we had running was: "C:\Program Files\VMware\VMware Server\vmware-cmd" "C:\Virtual Machines\VirtualMachineName\VirtualMachineName.vmx" stop hard "C:\Program Files\VMware\VMware Server\vmware-cmd" "C:\Virtual Machines\VirtualMachineName\VirtualMachineName1.vmx" start We have since migrated this machine to the free version of ESXi 4.1. Can anyone let me know if and how it is possible to schedule such a restart?

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• How do I access files inside a Wubi virtual ext4 Ubuntu partition from within Windows?

  - by aalaap

  I just installed Ubuntu 10.04 using Wubi on a PC that has Windows XP and Windows 7 installed. I was working in it for a while and everything is just fine. However, when I booted back into Windows 7, I couldn't figure out a way to access the files I had created or downloaded into the Ubuntu partition. They're in a virtual disk called root.disk in my C:\ubuntu\disks. Is there a way I can mount this vhd into Windows or at least browse the contents and extract what I need?

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• Xen and Ubuntu?

  - by wag2639

  How does one properly approach having Ubuntu servers on a Xen hypervisor? I don't have any experience with RAID or Xen other than from a theoretical level. Additional requirements: Use with mdadm Software RAID 5 (can be on separate disks) that multiple instances with access Paravirtualized Ubuntu Server guests instances Possible ideas for now: Ubuntu host (dom0) with ubuntu-xen-server package (this purportedly isn't supported) dom0 host will "own" RAID 5 partition More Ubuntu servers as guests Citrix XenServer bare-metal host XenServer will own RAID Citrix XenServer bare-metal host Ubuntu guest instance creates and owns RAID Questions and concerns: Can Ubuntu be used as a dom0 Xen host? Can XenServer install packages such as mdadm and create a partition? Can multiple guest access (R + W) to the same data partition (RAID)? Note: since it may have a bearing on support, I'm referring to Ubuntu Server 10.04

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• Expanding RAID 1 array size (Adaptec 1420SA controller)

  - by cincura.net

  I have an Adaptec 1420SA controller in server and RAID 1 array created. The old disks slowly started to report S.M.A.R.T errors so I replaced first one, rebuild array and then other one and rebuild the array again. But the new drives are bigger, so I'd like to expand the array to use full disk capacity. Is it somehow possible? In the Adaptec configuration utility, after POST, I didn't found anything that could do it. I still have the old drives, if it helps. The array is used for system (Windows 2008 R2 SP1) booting. Thanks.

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• Transfer Raid Drives to External Enclosure

  - by dubbeat

  I have 2 raid disks (a grand total of 360GB) in my laptop. I'm fast running out of space and want to install new drives. I've a pretty good idea how to do this. My question is what can I do with the drives that I remove? I've got lots of media files on these drives that I'd like to keep and maybe transfer back onto my laptop once I have the new drives installed. Bearing in mind that I know next to nothing about hardware how do you suggegst I go about reusing the removed drives somehow? Thanks,

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• How do I catalog files on several external hard drives that I want to store off-line? OSX

  - by raudi

  My partner, an artist, has more than 10 external hardisks both USB and firewire and every 2-3 months a new one has to be added (She's working with videos and pictures) currently its 10TB and growing so too much for a affordable NAS. Right now the files are not indexed and I think can not be searched with spotlight because not all drives can be connected at the same time. So if she wants to search for a file, she has to guess which disk/disks (based mostly on the date) and then search several drives. Now I'm looking for a solution to index/catalog the drives, something like GentibusCD Cathy Disclib (all these solutions are unfortunately Windows only) Is there any software for OSX that will catalog all the hard drives, so she can search the catalog, find the files, and get the ID of the disk / disk name that has the content? Preferably something with a GUI so my partner can also use it easily Preferably with Thumbnails for pictures/videos (But even an equivalent to "tree /F /A" would be better than nothing)

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• SAN/NAS with high availability?

  - by netvope

  I have two servers that I plan to use for storage. Each of them has a few SATA disks directly attached. I want the storage to be available even if one of the storage servers is down (preferably the clients wouldn't even notice that the fail-over, although I'm not sure if this is possible). The clients may access the storage via NFS and samba, but this is not a must; I could use something else if needed. I found this guide, Installing and Configuring Openfiler with DRBD and Heartbeat, which apparently does the thing I want. It relies on three components, Openfiler, DRBD, and Heartbeat, and all three of them need to be configured separately. I'm wondering are there simpler solutions? Is using DRBD+Heartbeat the best practice for a situation like mine? I'm also interested to know if there are alternatives that don't depend on DRBD.

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• How do I determine which HD is involved in the Event Viewer?

  - by Rod

  My PC apparently crashed before I came home from work (so my daugthers tell me; they rebooted it). The first thing I did, after it came up, was got into the Event Viewer to see what it said. Several hours before they rebooted it, there's a message in the event viewer that says: The driver detected a controller error on \Device\Harddisk5\DR5 I've no idea what that means. I got into Computer Manager, to take a look at the disks on my machine. There's only 1 hard drive, and a few slots for microSD, etc, but none of them are labeled "Harddisk5", nor is there anything there labeled "DR5". How do I determine what, if anything, those are? Could they be USB drives that my daughters used?

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• kernel warning disk error for command write - solaris svm

  - by help_me

  Recently this warning came up on my message logs, scsi: [ID 107833 kern.warning] WARNING: /pci@1c,600000/scsi@2/sd@0,0 (sd0): Oct 27 00:14:44 Error for Command: write(10) Error Level:Retryable Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Requested Block: 101515828 Error Block: 101515828 Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Vendor: SEAGATE Serial Number: 0441B9B5H Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Sense Key: Hardware Error Oct 27 00:14:44 scsi: [ID 107833 kern.notice] ASC: 0x19 (defect list error), ASCQ: 0x0, FRU: 0x2 This is showing signs of disk failing in my opinion. I have not seen the messages re-occurring. This is on a Solaris 9 Sparc system V240. The disks are managed by SVM and "metadb" is showing the flags as "a" Are there any tests or indications as to check/see if the disk is actually failing or was that error message initiated by something else. Thank you!

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• some questions about raid card

  - by cpps

  I have some questions about raid card. Use LSI MegaRAID® SAS 9260-8i raid card as a example. There is only two connection ports on the raid card, and they provide two cables that can connect 8 SAS/SATA storages. The document say it can connect "Maximum 32 drives per controller", I want to know how can I connect more than 8 hard disks with this card. Is that they say "Eight internal SATA+SAS ports" means they provide two cables which can connect 8 hard drives, but you can use other way to connect Maximum 32 drives? The other question. I see host bus adapter has raid integrated , so what is the difference between host bus adapter and raid card. Are they the same? I also know is SAS/SATA Expander's function only to connect more hard drives? Thanks in advance.

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• Restoring files from blueprint on command

  - by Nick

  I am setting up a server. I already have rented a machine running centOS 6 but I have run into a bit of a technical problem with configuring the server software: The server will have some files that it will try to read/write to them but what I need is a way to have a blueprint of these files and everytime the server restarts the files that it used get deleted and replaced by the blueprints. I have heared of a RAM disks or Virtual File Systems but didnt quite understand how they work or how to set them up. The server software is written in java which means bash commands can be run from it. I cannot modify what happens when the server shuts down entirely what I can do is run a command before the server runs the final shutdown save

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• How to prevent people taking software home?

  - by Robert MacLean

  Most companies I have worked at have had either a collection of disks or a network share with the installs of the commonly used software in them. This is to allow the IT dept and skilled users to install the software they need on their work machines very easily. However some users would see this as an opportunity to get "free" software for their home machines. I've seen the draconian approach of locking the machine down completely, but that does not work well (in my view - if you disagree feel free to comment on it) because You add so much extra work to IT Users get that big brother feeling So how do you find a way to prevent users from taking home software but still allowing them to install what they need? You can make the assumption that most of the users in the organisations I work in are smart enough to install software, I'm not worried about the tea lady here.

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• Lustre - is this bad form?

  - by ethrbunny

  Im going to be consolidating several 'server rooms' into a single installation soon. Part of this effort will be finding a home for 5Tb (and growing) of files / logs. To this end Im looking at Lustre and appreciating its ability to scale. The big vendors want to sell me a $20K SAN to manage this but Im wondering about buying several iSCSI units (like this http://www.asacomputers.com/3U-iSCSI-Solution.html) and using VMs for the OSS machines. This would let me fail-over to cover problems and not require a dedicated system for each OSS. Given articles like this (http://h30565.www3.hp.com/t5/Feature-Articles/RAID-Is-Dead-Long-Live-RAID/ba-p/1422) that talk about how RAID is not keeping up with drive density Im leaning towards more disks with lower capacity each. Again - some akin to the iSCSI array above. Tell me why this is a terrible idea. Do I really need to invest in a PE710 for each OSS/OST?

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• Home Server Restore

  - by Bryan Avery

  I have had to reinstall Home Server on my server and I would now like to restore it back to the state it was the last moment it stopped. I have the hard drive in a state it was last in, which is a small 250 gb hard disk. I have now installed 1.5tb hard disks, and installed a full licenced copy, as the original copy was a trial version. So I'm in a state where I have a new install, I have one of the old drives plugged in, but I can't transfer the old backups across, how do I do this?

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• Home Server Restore

  - by Bryan Avery

  I have had to reinstall Home Server on my server and I would now like to restore it back to the state it was the last moment it stopped. I have the hard drive in a state it was last in, which is a small 250 gb hard disk. I have now installed 1.5tb hard disks, and installed a full licenced copy, as the original copy was a trial version. So I'm in a state where I have a new install, I have one of the old drives plugged in, but I can't transfer the old backups across, how do I do this?

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• Can I change from BIOS IDE mode to AHCI mode at any time?

  - by Software Monkey

  Currently my Windows 7 computer is crashing during startup, after loading the AMD achix64s.sys driver, if I enable BIOS AHCI mode for the disks. It boots fine with IDE mode. Since I need my computer working, I am wondering if I can just use IDE mode for now, and later change to AHCI mode, when I figure out what is wrong. Background: I was running RAID mode, which needed additional drivers to install/boot Windows. But the MoBo RAID is flaky so I'm trying to switch to using a Windows mirrored volume instead - for that I expected to use AHCI mode.

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• Upgrading HP DL185 G5 8LFF, is using a Dell J1520 4-Drop SATA Adapter possible?

  - by jpreed00

  The HP DL185 G5 8LFF model supports 8 3.5" drives and 1 optical drive. However, instead of the optical drive, I'd like to have 2x 2.5" drives instead. The problem is that the PSU has no more SATA power cables (even though the motherboard has 4 additional SATA data ports). The PSU does have a free 10-pin connector and it looks like the J1520 cable from Dell would fit the bill. Link to cable description Does anyone have any experience using these cables? Are they safe? Any other ideas for adding the disks to the server if I don't use the cable? Thanks!

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• What hardware factors may be considered bottlenecks on a Hyper-V virtual server during load testing?

  - by sean

  Our organization is load testing our application using virtual servers via Hyper-V to see what the user load can be using fair equipment on a single box setup. The developer group questioned the validity of the tests given the normal use of the box by the other virtual machines. IT admins answered that it is an acceptable platform to load test on because it has its own CPUs, memory and disks allocated. Is their answer mostly correct? What hardware factors may be considered bottle necks given the other virtual machines when testing our application? For example, would bus speed be a concern or network IO? The application consists of a windows service written using the 4.0 .NET Framework and SQL Server 2008 R2.

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• RAID 1 Mirror Error with Two Western Digital 500GB Drives

  - by bm678

  I have Windows 7 Ultimate 64 bit installed on a Western Digital 500GB drive (WD5000BEVT-22ZAT0) that was partitioned automatically by Windows as 100MB System Reserved and 465.66GB drive C. There is also an unallocated second Western Digital 500GB drive (WD5000BPVT-22HXZT1) that I want to use for RAID 1 to mirror the first drive but I get an error message stating “ALL DISKS HOLDING EXTENTS FOR A GIVEN VOLUME MUST HAVE THE SAME SECTOR SIZE, AND THE SECTOR SIZE MUST BE VALID.” I uninstalled Windows patch KB-982018 but I still get the same error message. Could you please let me know how to resolve this? Thanks.

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• How to remove bad disk from LVM2 with the less data loss on other PVs?

  - by Walkman

  I had a LVM2 volume with two disks. The larger disk became corrupt, so I cant pvmove. What is the best way to remove it from the group to save the most data from the other disk? Here is my pvdisplay output: Couldn't find device with uuid WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3. --- Physical volume --- PV Name unknown device VG Name media PV Size 1,82 TiB / not usable 1,05 MiB Allocatable yes (but full) PE Size 4,00 MiB Total PE 476932 Free PE 0 Allocated PE 476932 PV UUID WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3 --- Physical volume --- PV Name /dev/sdb1 VG Name media PV Size 931,51 GiB / not usable 3,19 MiB Allocatable yes (but full) PE Size 4,00 MiB Total PE 238466 Free PE 0 Allocated PE 238466 PV UUID oUhOcR-uYjc-rNTv-LNBm-Z9VY-TJJ5-SYezce So I want to remove the unknown device (not present in the system). Is it possible to do this without a new disk ? The filesystem is ext4.

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• KB972455 Windows Server Update Services 3.0 SP2

  - by Sniek NL

  Dear people, My Small Business Server 2003 failed to install this update SP2 for WSUS3.0. The update is not available for rollback. WSUS 3.0 is not to be found in my software configscreen or startup menu. Some files have been deleted from the hard drive and last but not least. The service will not run and .NET runtime errors keep flooding my logs. Question. How to remove an update or program which is not listed in add/remove software anymore. Since the update it fails to run WSUS. Event-id: 0 Category: none Source: .NET Runtime ERROR: This error keeps flooding my logs. I am hesitant to roll back to a system restore point since exchange is running on the same disks.... :)

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• mysql error code 13 on windows xampp caused by lower case table names = 0

  - by user127379

  I can import an sql (from test linux server mysql) file if the lower case setting is removed. But then the table names are lower case and the web site doesn't work. Originally it was working (my.ini with the lower case settings), I then exported to a linux server, it was working there. Now importing back to my windows (xampp setup) fails. After wild goose chase looking at disks and permissions, I found that if I remove the lower_case_table_names=0, the import works! But I need the case sensitive command so that I can deploy on the linux server.

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