RAID stands for redundant array of independent disks, and allows for disks to be linked in various ways. Common RAID setups in Ubuntu are a hardware RAID, FakeRAID and software RAID.

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Server stuck at black screen after reboot

I recently put together a new server running Ubuntu Server 11.10 and it's all working great except for one little detail. Whenever I run "sudo reboot" everything works fine until I get to the grub ...
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Installed Ubuntu on a separate HDD, got a grub error and want to know if anything went wrong

I installed Ubuntu on my spare HDD and everything was going fine until the setup installed GRUB. I have 3 HDDs in RAID0 and a spare HDD where I chose for Ubuntu. The error said that GRUB cannot be ...
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Add new hard drive to mirror existing LVM drive with raid1

I have a 320GB hard drive with an LVM2 volume group that was created as part of the default installation. If I put a second 320GB hard drive into the computer, can I make the second drive mirror the ...
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731 views

Grub can't find RAID partition in fresh install of 11.04

I attempted to install 11.04 on a Dell PowerEdge-R610 that has a LSI SAS1068E-based hardware RAID setup (I think). Installer finishes without a hitch, but upon reboot, it appears that Grub can't find ...
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555 views

Installing 10.04 server on HP xw9400 Workstation with RAID 5

I have a workstation that was given to me that is a friggen powerhouse, so I figured I would set it up as my development and demo server. This is my first experience installing Ubuntu onto a RAID ...
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686 views

How do I fix a slow boot on a RAID setup?

I've just finished setting up a RAID 1 on my system. Everything seems to be okay, but I have a very slow boot time. It takes about three minutes between the time I select Ubuntu from GRUB and the time ...
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230 views

What does “md value mismatch_count” count?

Since upgrading to 11.04 I have been trying to get my 5 disk RAID5 array back online. The array was initially split in two, I tried to use a create command with the assume clean option to get it back ...
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700 views

Raid md device is not remove from memory, how to overcome this problem

I create raid 10 , i removed two arrays form md11 one by one , after that i going to editing the contents those are mounted ( it will be not responding stage), after i try for remove arrays those are ...
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How to fix boot message [RAID partition] not ready yet? [duplicate]

Possible Duplicate: mdadm: breaks boot due to “is not ready yet or not present” error I've got a RAID 5 setup for my /home partition. Every two to three boots my hdisks don't ...
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How to setup a Ubuntu Raid to be accessed by the Domain Active Directory Server

I'm new to this. I have setup a Ubuntu 12.04 server on a Dell PowerEdge FS-12. I have setup a large area on the FS-12 (raid 50) to replace one of the drive mappings on the windows 2003 server. I ...
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22 views

How to make RAID1 on running ubuntu 12.04

I want to make RAID1 on a running linux I installed the Ubuntu server 12.04 Then, I installed the backuppc software. I installed the OS on a HDD with 160GB of storage So, I want to put another 2 x ...
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Unabel to open another HDD with Ubuntu 14.04

I'm new to Ubuntu. I have installed Windows 8.1 next to Ubuntu 14.04, on one HDD. This first HDD working fine, I can access to my windows file etc. But I have another HDD named "Maya" where I have ...
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49 views

OVH - Dedi 14.04 Server - Raid Reconfiguration Help for a Total Noob

I am a linux noob and have been saddled with a problem far beyond my abilities. My situation is this: This box: http://www.soyoustart.com/us/offers/bk-24t.xml (6x4TB drives) OVH image based ...
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49 views

Problems booting from software RAID

TL;DR: created RAID 1 at installation of Ubuntu desktop but it won't boot after seemingly successful installation, although boot utility seems to indicate that GRUB is installed I am trying to set up ...
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21 views

Multiple Independent BTRFS Volumes

I have 4 x 2 TB drives. I want to set up one pair as a BTRFS RAID 1 volume, which I have done. I want to set up the second pair as a RAID 0 data, RAID 1 metadata volume, which I have not been able to ...
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39 views

Trying to mount drive /dev/sdc: TYPE=“nvidia_raid_member”

I just installed Ubuntu 14.04 this weekend. Here is my setup: 128GB SSD = Win7 128GB SSD = Ubuntu 14.04 500GB Seagate Barracuda = Files, music, photos, etc For some reason the SSD with Win7 is ...
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78 views

Ubuntu Desktop 14 on PowerEdge doesn't boot on RAID

I have a Dell 1U PowerEdge 1950, and for some reason, we cannot install Ubuntu 14.04 64bit Desktop edition on it. I know what you're thinking... why are you installing desktop? I have asked the same ...
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112 views

14.04 - Replaced drive in Software RAID 1 - How to make bootable?

I have an Ubuntu 14.04 x64 server with 2 500GB drives (sda and sdb) in a software RAID 1. I just had to replace sdb. Adding it back to the array with mdadm and resyncing was a snap. The problem I'm ...
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linux server hard drives raid 0

I have a question about my hard drives configuration on my linux server build on server. I have 2 x 3TB hard drives attached to it, but they are configured as RAID 1 at the moment. So the data is ...
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41 views

How to re-create the partition table?

I accidentally dd the first 512 bytes using dd if=/dev/zero of=/dev/sdb bs=512 count=1 and the partition table is now gone. Is there ANY way to re-create the partition table(/dev/sdb). My hard ...
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63 views

Raid Won't Mount After Reboot

I'm building a new Ubuntu 14.04 server with RAID. I partitioned the operating system and swap partition on a small harddrive and have the RAID strictly for files. After adding a new disc to the RAID, ...
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windows non-boot raid

I'm thinking about installing Ubuntu on a Windows machine for dual boot. There are three Windows drives c: and d: are independent and g: is a RAID (0/1 I think). What do I need to do to get the RAID ...
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81 views

Ubuntu with system on mdadm, broken grub, won't boot

My old disc started failing so I decided to change it. While moving data to a new disk, seeing how big it is, I though it would be a good decision to split the disk and add some insurance with RAID1 ...
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Explain on how to setup a JBOD Ubuntu Server?

I have 3 hard drives. Two hard drives are SATA and one is IDE. C:\ - 300 GB SATA Hard Drive D:\ - 80 GB IDE hard drive. And third disk is not installed, assume as if it was. How do I merge all three ...
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35 views

Should I enable my Mobo Raid controller or leave it at AHCI?

I am setting up a raid storage volume, should I leave the sata controller on AHCI or switch it to raid when using Ubuntu's software side raid?
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ZFS Pool - in dire need of help.

I'm really really new to Ubuntu. Which is probably why I'm facing this predicament... I couldn't load Ubuntu this evening. For whatever reason I could get to the login screen, but absolutely no ...
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42 views

Will an Ubuntu Live USB be Able to Access a Windows RAID 10?

My Windows will not boot, so I want to recover the files and reinstall. I've tried two different version of Linux (an old Ubuntu 7.10 disc and a Puppy Linux boot USB), but neither appears to be able ...
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86 views

Ubuntu Server setup: How to install Ubuntu on one drive and use other drive for file storage?

I've built a computer to use as a home file server. I will be installing Ubuntu Server. I've put a small SSD and two large HDDs in it. I have no prior experience with Ubuntu (desktop or server). I've ...
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50 views

RAID10 write speed decreased to normal SSD speed after rebuilding the array

OS: Ubuntu 14.04 LTS Software Raid10: 4x120Gb Intel 530 SSDs Server: HP ProLiant DL160 G6 FS: md0: ext4/ md1:swap Test is made on fresh new install, before making any change to some package or ...
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131 views

Two partition tables are unrecognized

While trying to installing Ubuntu 14.04 as my sole operating system, I've been encountering a number of issues (Described in more depth at Ubuntu 14.04 installation crashes with "???" ...
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13 views

Incorrectly detected fakeraid destroyed data during install

I have attempted to install ubuntu 14.04 on my PC in parallel (dual boot) with windows XP. My PC has 2 SATA disks, one was more-less devoted to the system, second one to data. However, when running ...
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22 views

Ubuntu RAID failure [get a warning]

Okay I might sound paranoid, but every day I think that my harddrives in both my servers failed for some reason and I am going to lose all my data. I have a server with a RAID 5 installation with ...
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Extending RAID-1 with two more disk (RAID-1 => RAID 1+0)

I have a Ubuntu 12.10 installation with (software) RAID-1 - only for data (root-system and swap are on another drive). Now I would like to add two more drives to the existing RAID 1 (basically to have ...
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Grub error: out of disk on Ubuntu server 12.04 after power interruption [duplicate]

I've got an Ubuntu server set up that has been running happily for a year or so with no problems to speak of. It's configured in a RAID-1 to keep everything nice and backed up. Yesterday we had a ...
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262 views

Ubuntu 14.04 install on hardware with RAID

I've just built a new machine using an ASUS Mobo with 8GB of RAM and set up RAID 10 with 4 new HDD. I want to install Ubuntu 14.04 on it and so far have tried to do so 3 times with no luck. The ...
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49 views

Raid10: how to tell which disks are in mirror?

When I do "cat /proc/mdstat", there seems no such information as to tell which disks are in mirror. % cat /proc/mdstat md126 : active raid10 sda1[0] sdd1[3] sdc1[2] sdb1[1] ... near-copies Thanks ...
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28 views

Error on choosing location while freshly installing 14.04 [closed]

I'm trying to install 14.04 on my desktop and am running into this error after going through the partitioner. Error screen: Additional information: My system has da fake raid array (Raid 0). ...
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185 views

NAS running Ubuntu / Raid 5 / SSD cache

I'm about to setup a NAS - planned hardware so far: MB: ASUS P9D WS(*link1): sry, it's german, it says th MB supports Hot-Plug in AHCI or RAID Mode, supports Intel Smart Response (SSD Caching) CPU: ...
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75 views

RAID6 will not reassemble with 2 failed disks

Relevant photo album Hello all. I have a file server running ubuntu 12.04 (See first picture) with 6x Seagate 3TB HDDs in a RAID 6 configuration (giving 12TB of storage). This is a software RAID, ...
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Ubuntu 14.04 Manual Hard Drive Partitioning Help Needed

I'm in need of some assistance with manual partitioning from the Ubuntu 14.04 install GUI. I'm trying to do a fresh install of Ubuntu 14.04 desktop. I have a 60GB SSD as that I want all my OS files ...
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389 views

GRUB install fails on software RAID

I've been trying to install Ubuntu 14.04 on two 30GB SSDs (OCZSSD2-1AGT30G) with an ASUS motherboard (ASUS DSBF-D). I tried installing on both of the drives separately and it seemed to work fine. The ...
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28 views

Failure proof logical volumes on heterogenous bunch of irreliable hard disks

Like I guess most people do, I have accumulated an assortment of various hard drives over the years. They are mostly of different size, manufacturer, speed, etc. There are too many off them to put ...
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105 views

Strange output of btrfs fi df after converting from RAID0 to RAID1

I just converted my 3 disk btrfs filesystem from RAID0 to RAID1 and balanced it. At first the data was all in the RAID0 filesystem, so running btrfs filesystem df showed something like this: (XX are ...
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290 views

Ubuntu 14.04 Trusty with UEFI + Software RAID1

How to install Ubuntu on UEFI BIOS with Software RAID1? Should there be 1 partition for EFI and another partition for RAID1 (root+swap) on each drive? I wonder how it will update one EFI partition ...
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56 views

Cannot replace missing disk in raidz

My raidz is degraded after the change of my motherboard - a disk cannot be found. The missing disk used to be /dev/sdh but now it is named /dev/sdg - which is the cause of the problem. In the ...
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536 views

mdadm warning (system unbootable) from update-initramfs, mkconf's suggested fix seems inconsistent with mdadm's description of problem

Summary: update-initramfs says system unbootable, message points to mkconf which suggests rewrite to mdadm.conf that would appear to break the RAID, system up (for now) but next reboot may kill it, ...
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39 views

Investigating RAID-related issue that caused data loss while using LiveUSB

I recently tried to install Ubuntu on one of my hard drives and something went seriously wrong, resulting in 400+ GB of data being lost. Frustrated as I was, I've decided to try to find out what ...
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276 views

Raid5 can't start degraded, dropping to shell

Already posted about this here: http://ubuntuforums.org/showthread.php?t=2219141 but thought I could post here as well, in hopes that it would increase my chances of a solution :) I've been running ...
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585 views

HP ProLiant ML350e Gen8 - Ubuntu 14.04 LTS

I was researching about new Ubuntu Server 14.04 LTS and the Proliant ML350e Gen8 with B120i RAID controller. I found that HP certified Ubuntu without RAID engine on 12.04 server version, but now I ...
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79 views

How do I get GRUB to install on a RAID array? [duplicate]

I am trying to build an Ubuntu desktop machine with RAID array, and am having trouble with the installation of GRUB. The 2 10GB HDDs are partitioned using sgdisk (invoked by a script to ensure ...