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• what kind of RAID should I choose when planning to host a vedio stream application? [duplicate]

  - by facebook-100005613813158

  This question already has an answer here: What are the different widely used RAID levels and when should I consider them? 2 answers Which…

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• Can the Intel C600-series SAS controller RAID SATA drives?

  - by CyberShadow

  (Sorry if this is off-topic - technically this is a home workstation setting, but is regarding mostly-server technology.) I have a GA-X79S-UP5-WIFI motherboard and four ST3000DM001 drives, and the IRST manager isn't letting me put the drives in a RAID (it lists them, but the option to select the C600-series controller is simply grayed out). …

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• Will RAID 0 array still work if I replace bad MOBO with identical model?

  - by dustin

  My motherboard, which is an Abit AA8XE recently failed. I had most of my data backed up but would like to recover the rest. The problem is my drives where set up in RAID 0. If I replace the bad motherboard with another AA8XE will my RAID 0 array still work? Are there any other issues I might encounter?

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• Are PCIe v2 RAID controllers backward compatible with PCIe V1?

  - by Tom

  I am looking to add a PCIe V.2 RAID controller (LSI SAS 9280-4i4e) to an older Intel server (SR2500) which has PCIe V.1 slots. Does anyone have any experience with using RAID controllers designed for PCIe V.2 in a PCIe V.1 server?

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• Is it possible to enable software RAID 1 on Windows XP system partition?

  - by tputkonen

  I have heard, that it should be somehow possible to use just one partition with Windows XP, and be able to mirror that by enabling RAID 1 in XP. I'd appreciate tips how to do this. If this is true, is it also possible to enable RAID for an existing Windows installation?

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• Can I set up a raid array where I have multiple small drives that back up to one large drive?

  - by kryos1

  I want to know if I can set up a raid of like 150 gb velociraptors for performance and then make it to where they automatically back up to a larger say 2tb western digital caviar black drive? let me know if this is possible and what drives I should get and what raid controller I should buy!

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• How do I create a RAID 1 on HP Proliant DL360 with P410i controller?

  - by Ravi

  Hi Guys, It seems there is only an option for: Raid 1+0 Raid 0 I got two Disk, and wish to do a mirror. What are the options for me? Thanks.

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• Possible to (re)sync 2 drives into RAID 1 Array?

  - by MsLis

  Have an XP machine with 2 drives configured in a RAID 1 array. Trying to fix a boot problem, I took the drives out to run chkdsk on them, and I accidentally got them out-of-sync (event logs, etc). Is there any way to duplicate the contents of one drive onto the other to restore their RAID-ness, or have I really messed myself up?

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• Are there any USB flash drives or SD cards which use RAID or redundant storage for additional reliability?

  - by Luke Dennis

  I'm looking to get a fault-tolerant USB flash drive, which saves data to multiple independent locations, whether using RAID or some other means to back up data. Has a product like this ever been created, or are my only options to hack something together? (By the way: I'm aware that RAID doesn't prevent data corruption from software or the…

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• Is TRIM supported on RAID 0 configurations for SSD drives in windows 7?

  - by John Sonmez

  I know this question has probably been asked at some point in the past, but I am trying to figure out if Windows 7 supports passing TRIM commands through RAID controllers yet. I am trying to decide between buying a single SSD drive and utilizing TRIM or Buying two SSD drives and putting them in RAID 0 configuration What is the fastest…

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• Do 7.2k SATA drives and a hardware raid controller always end with trouble?

  - by xelco52

  I'm reading the FreeNAS userguide and came across the statement: Note that hardware RAID configured as JBOD may still detach disks that do not respond in time; and as such may require TLER/CCTL/ERC-enabled disks to prevent drive dropouts. I'm using a '3Ware 9550SX-8LP RAID Controller' and see quite a few stories of people…

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• Is it possible to continue a RAID 5 resync if it was interrupted?

  - by rubo77

  If you replaced a broken Harddisk in a RAID 5 the raid must be resynced, which can last lots of hours, if it has some TeraBytes. If this resync is interrupted by powerloss, can the server be rebooted and the resync be started over again? (I am using Ubuntu 12.04 on my server in my livingroom and it shut down into hibernate mode,…

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• Is there a difference between RAID 10 (1+0) and RAID 01 (0+1)?

  - by notnot

  I've seen both of these listed, both being striped and mirrored across multiple drives, but is the a difference between them that I'm not picking up on?

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• Accessing a broken mdadm raid

  - by CarstenCarsten

  Hi! I used a western digital mybookworld (SOHO NAS storage using Linux) as backup for my Linux box. Suddenly, the mybookworld does not boot up any more. So I opened the box, removed the hard disk and put the hard disk into an external USB HDD case, and connected it to my Linux box. [ 530.640301] usb 2-1: new high speed USB…

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• Restoring an Ubuntu Server using ZFS RAID-Z for data

  - by andybjackson

  Having become disillusioned with hacking Buffalo NAS devices, I've decided to roll my own Home server. After some research, I have settled on an HP Proliant Microserver with Ubuntu Server and ZFS (OS on 1 Ext4 disk, Data on 3 RAID-Z disks). As Joel Spolsky and Geoff Atwood say with regards to backup, I can't rest until I…

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• Raid-z unaccessible after putting one disk offline

  - by varesa

  I have installed FreeNAS on a test server, with 3x 1Tb drives. They are setup in raidz. I tried to offline one of the disks (from the FreeNAS web-ui), and the array became degraded, as I think it should. The problem is with the array becoming unaccessible after that. I thought a raid like that should be able to run fine…

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• file system that allow to specify different RAID level per directory and change it afterward

  - by Adam Ryczkowski

  I have 5 hard drives, where I want to keep my data. Some of my files are more important, and some of them are less. So some of them I wish to put on RAID-6, and for some it RAID-5 is sufficient. It is difficult to predict at the moment of creation of the arrays how much space of each type to declare. What I would do if…

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• When using software RAID and LVM on Linux, which IO scheduler and readahead settings are honored?

  - by andrew311

  In the case of multiple layers (physical drives - md - dm - lvm), how do the schedulers, readahead settings, and other disk settings interact? Imagine you have several disks (/dev/sda - /dev/sdd) all part of a software RAID device (/dev/md0) created with mdadm. Each device (including physical disks and /dev/md0) has its…

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• New Version: ZFS RAID Calculator v7

  - by uwes

  New version available now. ZFS RAID Calculator v7 on eSTEP portal. The Tool calculates key capacity parameter like  number of Vdev's, number of spares, number of data drives, raw RAID capacity(TB), usable capacity (TiB) and (TB) according the different possible  RAID types for a given ZS3 configuration.…

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• 12.04 grub unable to boot on /sde, upgrade-grub and boot-repair failed, please help

  - by VGR

  My problem is I've 4 disks in a raid array listed as sda, sdb... sdd and grub 2 refuses to boot on /sde (the 5th disk, standalone and containing a clean install of 12.04 64 bits). I tried all solutions but all fail. (live CD/USB with grub-setup, also tried repair-grub, and tried also in the "grub rescue" set prefix=…

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• Hardware Compatibility

  - by thebradnet

  I am looking into buying a LENOVO RD330 SERVER with a ThinkServer RAID 500 Adapter II RAID controller. I am having problems finding out if all of the hardware that I am wanting will be compatible with Ubuntu. I have check the "Certified Hardware" list but the list is very limited. Both the computer and the RAID…

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• Ubuntu 12.04 crashing

  - by James Mullinix

  We have a server with 2x32gb sas raid 1 and 4x1tb raid 10 + 2x1tb hot spares. Whenever we try to copy the 1tb and 1.5e6 files to a backup location (even just using tty1 cp command) it fails. We have tried using backintime and dejadup, and resorted to a manual cp to an external usb2 HDD. When that failed, we…

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• Why can't Ubuntu find an ext3 filesystem on my hard-drive?

  - by urig

  This question is related to this question: Not enough components to start the RAID array? I'm trying to retrieve data from a "Western Digital MyBook World Edition (white light)" NAS device. This is basically an embedded Linux box with a 1TB HDD in it formatted in ext3. It stopped booting one day for no…

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• Ubutnu 12.04 mdadm inactive

  - by user32274

  For a while now, my RAID 5 has ceased to work. Everytime I tried "madm --detail /dev/md127", its states all the drive and drive info, but that two of the drives have been removed. After some restarts, doing the same thing, i am getting /dev/md127 does not appear to be active. When I go into DiskUtil,…

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• Drives will not show up on PCI RAID card in Ubuntu 12.04 LTS

  - by Mechh69

  Computer specs Intel E8200 Dual Core MSI G45M MB Ultra U12-40739 PCI Expansion Card - 2 SATA Internal Ports, 1.5Gbps, RAID 0, 1, JBOD 6 GB DDR2 Q1. I installed Ubuntu 12.04 LTS and Amahi, for using Grey Hole, last night. The two disc on the raid card do not show up under Ubuntu 12.04LTS but they do…

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