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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Installing Linux with RAID 1 for first time ever

I want to install Ubuntu 14.10 Server 32 bit on a system, with specifications: Intel motherboard(DG965WH),Two SATA hard-drives and I want to install Linux Server for the fist time ever.without dual ...
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Driver hp raid controller b120i

I have a problem with a installation of ubuntu 12.04 server on HP SL4540 with raid controller b120i. Ubuntu during installation does not recognize the raid controller, and displays the disk ...
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Grub halts on menu until enter is pressed

I have installed an Ubuntu server and it stops on the Grub Menu until ENTER is pressed without timing out and using the default entry. At first I thought that the problem was due to a reboot after a ...
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Fakeraid in Ubuntu 14.04 wont auto assemble on boot

I'm trying to setup a 4TB raid 1 using fakeraid (intel matrix storage manager) as secondary storage. I'm able to assemble the raid manually using mdadm with the following commands: sudo mdadm ...
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Ubuntu Server Raid 0 Install Question

I have installed Ubuntu -1410-utopic-64-minimal on my server. I have 2 3 TB HDDs. I installed in raid 0. This was my first time setti8ng up a raid. I don't know if I did it right. This is what shows ...
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why does mounting a volume on a building raid cause sync speed to drop?

I have an array with 4 disks in RAID 10 configuration : root@backup:~# mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Mon Feb 23 16:01:29 2015 Raid Level : raid10 ...
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How should I encrypt Ubuntu Server 14.04 with AES on RAID 10 and RAID 5?

After researching I've come to the conclusion that my set up is just not standard enough to have a direct answer floating about on the interwebs. My Hardware: i7 950 CPU 24 GB DDR3 7 2TB 7200 RPM ...
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12TB storage, can someone help me? :)

I have thought about making a RAID 5 with 4 hard drives, 4TB each. There are files with few KB and other files with some GB. I want it to be as stable as possible. This will not be mounted as / or ...
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Raid Drive Won't Assemble

I had a server with Raid 5, and I wanted to wipe everything and do Raid 10. I deleted the raid 5 as best I could, zeroing superblocks, removing it from fstab, etc. And I created the raid 10. Now, I ...
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How to install software raid 0 on ubuntu 12.04 server with mdadm?

I need to install a software raid-0 array on a Ubuntu 12.04 server with mdadm through commandline (SSH). The drive setup is as follows: SDA = OS SSD SDB = HDD for raid 0 SDC = HDD for raid ...
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Upgrade 12.04->14.04 broke mdadm RAID10. Boot stops

Server was an Ubuntu 12.04 x64 and was running just fine. All four drives in server are SATA spin-drives. /dev/md0 - swap RAID10: sda1, sdb1, sdc1, sdd1 /dev/md1 - root RAID10: sda2, sdb2, sdc2, sdd2 ...
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Backing up or mirroring my existing hard drive

I'll try to keep it short - I have windows 7 and ubuntu 14.04 LTS installed. Windows has recently stopped working (involving all kinds of messages during start up that say that my hard drive is ...
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37 views

New SSD causing segfault on boot (14.04 LTS)

I have an Ubuntu 14.04 LTS 32 bit system configured as follows: 2 x 3Tb drives, in a RAID 1 array, mounted as /home 2 x 1 Tb drives, partitioned as: a /boot partition (/boot2 on the other drive) a ...
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12 views

Files take up more space on new RAID array

I just upgraded and reinstalled my home server. One thing I did was going from software raid to a raid card. After doing this and starting to copy back my backups, I've noticed that my first ~1TB ...
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31 views

How to setup a RAID 1 array in 14.10?

I need to know how to set up my 2 1TB WD Red hard drives in a RAID 1 array. I've tried following a tutorial on this, but it was a very old tutorial. Please help me with a detailed response.
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Can I create a hybrid software-RAID array with disks of different sizes?

Products such as Synology offer something called Synology Hybrid RAID http://www.synology.com/us/products/features/RAID.php This RAID type allows you to make best use of your disks available by ...
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Adaptec 8805 kernel panic on Ubuntu 14.04.1 64bit

I use QUADStor with Adaptec 8805 and constantly falls into a kernel panic by reason of AAC (adaptec) Current driver version: 1.2-0 (30200) Clean installed system with quadstor ... same errors ...
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How do I only install ubuntu 12.04 in hp z400 workstation?

I am trying to install ubuntu 12.04 in hp z400 workstation which has windows installed before. When I tried to install ubuntu, I got this error: “Unable to install GRUB in /dev/sda”. When I chose ...
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XFS File System Fails - Can't read Superblock

After this (Iomega Home Media disk corruption - data recovery help asked) problem solved... i have a new one.. I'm trying to understand why my Iomega Home Media Stopped working, and need for that to ...
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How to re-add accidentally removed hard drive in RAID5

I have a NAS on Ubuntu Server with 4 2TB hard drives in RAID 5. A couple of weeks ago, one of the hard drives died, but my RAID was working, although degraded. Luckily it was still under warranty and ...
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40 views

Dell Optiplex 780 stops booting at hardware RAID screen

I installed Ubuntu server on a Dell Optiplex 780. I have two 500GB WD blues in a hardware RAID1 on the machine. Any time I try to boot to the RAID, though, it hangs. There is a chart that has the RAID ...
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Ubuntu 14.04 Desktop on RAID-5 with LVM, GRUB failed to install

I want to configure a home media center and file storage, to keep the data safe I want to use RAID-5 (I have 4 HDs) and LVM for future scaling. I've configured RAID-5 and LVM, but GRUB installation ...
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failed/degraded raid5 array recovery

First, thank you for your time and effort with helping to recover this raid array. I have a personal raid 5 array that is in rough shape. The failed array has eight 2 TB drives that were built up ...
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38 views

Installing Ubuntu on RAID with LVM, failed to boot

I've installed Ubuntu on RAID-5 with LVM and made a /boot partition but it failed to boot. Can anyone help or point to a resource describing the process? Update: I decided to re-install the OS. This ...
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How to install Ubuntu Server 14.10 on an existing IMSM container (mdadm) of a machine that does not support the EFI specification?

How can I install Unbuntu server (14.04LTS or 14.10) on an existing IMSM container (using Intel's RST technology) on a machine that does not support the EFI specification? This is actually a business ...
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16 views

Ubuntu Ver 14.04

New to Ubuntu, we have a NAS drive that has a burned out board, inside the NAS are 2 x 2TB Drives with a RAID 1 COnfig. I have been told to use Ubuntu to access the data on one of the Raid Drives, I ...
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Ubuntu 13.10 software raid

I had already Ubuntu OS installed on my desktop PC, where the software RAID 5 is configured ( 3 partitions /, swap and home ). This system was upgraded from the 11.04 till 13.04, it was quite messy, ...
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Mounting Drives, Replacing with an Array

So I currently have a boot drive, and a 500gb Drive, and a 2TB Drive. I have just aquired a HP ProLiant Microserver, and I will be aquiring 4x2TB Drives in around a month, which I will put in Raid 5. ...
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36 views

Problems with iSCSI timing out on write operations

I am running on 14.04.1 with iscsid version 2.0-873 I have an Enhance Ultrastor E3160 that is formatted raid5 on the backend and formatted as EXT4 on my system. I can see the device, attach it, ...
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How to Install Ubuntu 14.04 with RAID 1 using desktop installer?

Many people claim that it is impossible to install Ubuntu onto RAID 1 with the Desktop CD. Is this really true? If not, how can it be done?
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mdadm raid1 won't load when one of the drives is unplugged [closed]

I've set up a raid1 for data only using mdadm. The array seems to work fine, but when I unplug one of the drives in order to check if the array is still accessible it won't mount. I thought one drive ...
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Can't reboot after installing 10.04LTS

I am trying to upgrade from 8.04LTS to 10.04LTS and onwards to 14.04. I first tried to download 10.04 via the Internet but the install crapped out half way through. I have now tried three times to ...
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33 views

Going from a single 3TB disk to a 4-disk 6TB RAID10

I have a 3TB standalone disk (EXT4 in a 4-bay eSATA box) that I would like to integrate into a RAID10 array by adding 3 more 3TB disks. I'm hoping to do this nondestructively, as it would take ...
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Software Raid0 doesn't mount successfully in fstab

I have created a Raid0 and it works as I expect it. The the array file is created at /dev/md0. I want this to be mounted automatically by adding this line at the end of the /etc/fstab file : /dev/md0 ...
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Ubuntu 12.04 failed to boot in recovery mode with Degraded RAID1

I have Ubuntu 12.04 LTS installed in RAID1. Suddenly the system failed to boot (using Ubuntu with linux 3.2.0-45-generic Pae) with an error message There appears to be one or more degraded RAID ...
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sudo does not change sysfs parameters [duplicate]

I can not run following command with sudo to change a sysfs paramete: $ sudo echo 300 > /sys/block/md0/md/stripe_cache_size bash: /sys/block/md0/md/stripe_cache_size: Permission denied However, ...
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“Unable to reduce RAID LV - operation not implemented”

I've created a logical volume using Ubuntu 14.04 that started off at 80GiB. I resized it to 128GiB, but now I'd like to reduce back to 80GiB. There's an ext4 file system filling the volume. My command ...
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301 views

How to force update-grub to use UUID?

When I run "update-grub", the file "grub.cfg" will contain lines like this. menuentry 'Ubuntu...' { ... linux /boot/vmlinuz... root=/dev/md124 ... ... } For the line of linux, is it ...
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Why isn't md raid assembled after reboot?

I'm trying to get an Intel RAID setup. The problem I have is that after a reboot the raid is not available. These are the steps I go through to setup the Intel RAID using the mdadm command. I've ...
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Boot message conflicting device mode

HI I'm running ubuntu server 14.1. There is a nvidia fakeraid array active. The raid is working, however on boot I see these messages (1 of 3 messages): Systemd-udevd[599]: conflicting device node ...
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Do I need to set SATA mode to RAID in BIOS if I use software RAID? [duplicate]

I just had a problem with my RAID array and I had to rebuild it. Everything seem to be fine now. I am also having problems with the shutdown command (does not power off the server) and I reloaded the ...
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28 views

Add disk and use software raid

I have a lvm partition on a disk, and another, identical drive with no data on it. Would it be possible to set up these two drives in RAID 1 using mdadm, with the same lvm data on top? Perhaps by ...
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How to install Ubuntu server 14.04 on LVM RAID?

I want to try install ubuntu on LVM RAID logical volume, but fail on step grub installation. There are my steps as below: 1. use three HDDs called sda, sdb, and sdc to create a volume group. 2. ...
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btrfs for deduplication and compression at the same time?

I'm thinking about using btrfs functions for both deduplicate and compress my storage... My question is: is it efficient? I mean, does it deduplicate AND compress at the same time efficiently?! I'm ...
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Recover files from one drive from a raid1 array

A couple years ago I created a raid 1 array using two 1TB drives in a computer running Ubuntu 12.04. These drives stored my files (pictures, videos and music) and acted as a server for other computers ...
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How can I find the exact model of a hard disk in a raid?

I have a ProLiant DL380p Gen8 with 4 Plextor solid state drives RAIDed. Since one of these disks has failed (as I see in HP iLO4 of my server) I need to find the exact model of these disks to replace ...
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How to check file-level write performance?

In a very similar question, the accepted answer suggests to do: dd if=/dev/zero of=/tmp/output bs=8k count=10k; to measure the write speed of a hard disk. My tests were inconclusive. I have an ...
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Problem with installation trying to find strange disk

When I use synaptic to install anything (in this case k4dirstat) I always get cascading errors. They start at: run-parts: executing /etc/kernel/postinst.d/zz-runlilo 3.11.0-19-generic ...
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454 views

Installing Ubuntu 14.04.1 LTS with hardware RAID

I have been having some issues with trying to install Ubuntu off of a live usb. The system has a Intel hardware RAID controller and I wish to run my two HDDs in RAID 1. I have come across and issue ...
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How to install Ubuntu server with UEFI and RAID1 + LVM

I used to install my servers with LVM over software RAID1, and grub install on the MBR of both drives. Now I have an UEFI server, and the compatibility (BIOS) mode does not seem to work. So I went ...