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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Software RAID disapears after rebooting

I'm currently trying to setup a media server and I'm having issues with my software RAID. It seems like once I reboot the server the RAID doesn't get assembled despite there being an entry in the ...
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How to remove erroneous busy flag in mdadm

I have a system that I'm trying to configure and update to Ubuntu 14.04 LTS. I have a pair of drives which were previously the boot system. There are four RAID-1 sets: sda1 and sdb1, sda2 and sdb2, ...
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Ubuntu14 stuck after kernel initialization

I've installed a server with Ubuntu 14.04. I ran into this issue only once while installing, but after that I didn't need to reboot and everything went fine. Just before deployment I decided to make a ...
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Installing GRUB2 on Intel RAID1 volume fails to boot

I've come here as a kind of last resort, hopefully someone will be able to help me. I work for a company which sells POS systems, recently we started using the HP RP5 5810 PC as the heart of our ...
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Install Ubuntu Mate on Raid 1

I wanna install ubuntu mate desktop 14.04 LTS on Raid 1 - preferably with LVM and Encryption. tha farthest i got so far is. booting live system installing mdadm, creating a raid starting ...
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How to rebuilt a hard drive in RAID 5 system? [closed]

I have a Ubuntu 10.04.4 and recently i replaced a faulty hard drive with a new one. I am using a RAID 5 system. How do i initiate rebuild commands?
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12 views

Softraid 5 Ubuntu

I have installed a raid 5 on my ubuntu server 14.04 and I want to know how I replace a hard disk and make it recover/build on that HDD. My setup is 4 1tb hard disk in raid 5. No other HDD's or SSD's ...
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14 views

Error selecting zone when installing ubuntu 14.04.2

I'm trying to install Ubuntu Desktop 14.04.2 on a pc with this properties: - processor: AMD Athlon(tm) 64 X2 Dual Core 4200+ 2200mhz - motherboard: Asus M2N-mx - Ram 2gb - 2 raid's mirroring (80gb ...
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I want to install ubuntu on main hdd ams then have two additional drives set up in raid 1 for storage needs.

I want to do a fresh install of Ubuntu on my machine using a total of three hardrives. I want my small 500gb HDD as my boot and main storage for my system. I then want my dual 1tb HDD set up in a raid ...
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How do I deal with the isw ERROR?

>>sudo update-grub Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported. Found linux image: /boot/vmlinuz-3.13.0-55-generic ...
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6 views

RAID Not Working

I'm trying to make my 5 HDD's into a RAID. So far I've done the command below sudo mdadm --create /dev/md0 --level=linear --raid-devices=5 /dev/sda /dev/sdb /dev/sdd /dev/sde /dev/sdf From reading ...
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RAID Array Check

I just created a RAID using the command below sudo mdadm --create /dev/md0 --level=linear --raid-devices=5 /dev/sda /dev/sdb /dev/sdd /dev/sde /dev/sdf Now how do I check its working, and is there ...
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13 views

Help Me With Software RAID

I am trying to create a striped array on five new HDD's. Does someone have a good guide on how to do this?
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How to get notified on any problems with raid?

I've set up RAID 1 of 2 disks for the purpose of data backup. Currently it's working and /proc/mdstat reports UU, but will I be notified in any way if one of the disks breaks leaving my precious data ...
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20 views

New Server - Need Backup Strategy Assistance

I previously had an Ubuntu 12.04 LTS server that I was running off of a single 2 TB hard drive. I had also installed CrashPlan on it and was backing up some data from it to the cloud (including the ...
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1answer
31 views

Raid 6 on btrfs in Vivid

Hi I'm trying to make a Raid 6 on multiple drives in Ubuntu 15.04, Btrfs is already running on 4 in raid10 when I do sudo btrfs balance start -dconvert=raid6 -mconvert=raid6 /mnt/storage/ it ...
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9 views

Unable to boot after replacing faulty mdraid1 disk

My server has 2 RAID-1 disk configured trough mdraid. A couple of months ago, one of the disks died, so I replaced it. After booting, Ubuntu took some to time to (which I presume was) copy everything ...
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24 views

Ubuntu 14 Raid not booting

i'm having issues for booting my Ubuntu 14.04 Server. I have two discs 320GB. I upgraded the disks from two 160GB and everything was working ok. Those disks were one IDE and the other SATA. Now both ...
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Mdadm slow raid6 creation

Currently I am creating raid 6 on 4 4TB hdds. When I use the command "cat /proc/mdstat" The returning info tells me I'm 57.9% with 26516.7 min speed 1032K/sec That seems like a really long time. ...
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37 views

Problems installing Ubuntu 14.04.2

I'm a windows user, and till now we were using oncloud 8.0 on Windows 8 Server, but there is no more support, for this reason, now, we are going to try to configurate a linux server and owncloud. For ...
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17 views

Raid 6 mdadm creation error

I am trying to create a 4 drive raid 6 with mdadm in Ubuntu. The command I am using is sudo mdadm --create /dev/md0 --level=6 --raid-devices=4 /dev/sdb /dev/sdc /dev/sdd /dev/sde the error I am ...
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29 views

fsck on a hardware RAID5

My Ubuntu 14.04 server won't boot properly and I want to check the hard drives with fsck to make sure everything is ok. I can boot into a systemRescueCD no problem. The server has 4 HD using a ...
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35 views

Administering three disks in RAID 5

This is the first time I want to administer disks in RAID 5. I have 3 discs in RAID 5 that I want to install on my new PC ubuntu sever 14.04.2, I used command mdadm: sudo mdadm --create / dev / md0 ...
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40 views

How do I setup JBOD by installing Lubuntu?

I want to setup JBOD (Just a Bunch Of Disks) with Btrfs on Lubuntu 15.04.
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63 views

How do I setup software RAID 0 or JBOD with BTRFS?

I've a 4GB SSD drive which is BTRFS formatted and is running Lubuntu 15.04 and a 8GB SD card (which I've always inserted) formatted as BTRFS. I want to setup software RAID 0 or JBOD, so I've more ...
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How could I set raid1 members to be offline temporary, to remain ready for use?

I have home server that is unused most of the time. So I wish to let spinning discs in it to go sleep. I gave up trying to stop rootfs writes waking up all drives permanently, so there is SSD disc for ...
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42 views

Intel RST Raid 0 ntfs mount from damaged disk

a friend of mine had an RAID 0 Array of two 500GB HDDs (Windows - NTFS - Dell preinstalled) and one seems to have an bad sector. So i started the PC from Ubuntu Live Disk (15.04) and tried to assemble ...
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73 views

BTRFS bad tree block start

First some background on my setup. I have 7 Hard Drives in a raid 5 (I know, move to raid 6, but not the issue here) array. On top of that, I run LVM, with a partition for btrfs. BTRFS is at version ...
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180 views

Unable to set up Raid during Kubuntu 15.04 installation

According to the installation documentation one should be able to choose something along the lines of 'physical space for raid' when choosing manual partitioning during installation but the option ...
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35 views

Ubuntu 12.04 and Hardware RAID 5 and LVM

I have an existing database server setup with RAID5 (3pcs 1 TB disk - usable is 2TB). One of its partition is /data is LVM. There is production data already in there so we opted to create another ...
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24 views

How to check ZFS Zpool is set up correctly?

I have just created a RAIDZ1 group of 3 x 2TB disks acc@CODAAMOK304:~$ sudo zpool status pool: storage state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM ...
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46 views

Landing in the GRUB command line at start up (bcs of XFS filesystem at /boot!)

Edit. The problem that I landed directly in the GRUB command line was another bug than originally asked for - see the answer. I changed the title accordingly. I think the title says it all. I'll ...
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46 views

Resize ext4 Partition to >2TB without data loss

Is it possible to resize an ext4 partition to >2TB without data loss? I added 1TB disk from a RAID 5 Hardware RAID (from 2TB usable to 3TB usable) fdisk command output: Disk /dev/sdb: 3000.5 GB, ...
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Can the C: drive in WINE be put in the RAID 10 local to host Ububtu 12.04 LTS

really new to Ubuntu, and even newer to WINE. Is it possible to move the C: drive in WINE to use a Raid 10 array that is internal local to host non boot storage. I really want to keep the SSD boot ...
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25 views

Settings up RAID 1 on existing Ubuntu installation

Good morning, For my internship project I am currently setting up a Linux (Ubuntu 14.04.2 LTS) web environment (NGINX/PHP5/PHP-FPM/MariaDB and such...). Now I forgot to set up the RAID 1 ...
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46 views

Remove disk from mdadm array, Raid 0

I have a 2 disk mdadm RAID 0 volume, 4TB total, created in Ubuntu 14.04 server. The volume is less than half full and I'm looking to unraid the disks, keeping the data so that I can use one of the ...
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21 views

mdadm build legacy array on boot

I have RAID0 that was built using windows dynamic disk. I've read that this is a legacy array and can be assembled using build in mdadm. I've gotten the array to build and mount using the following ...
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153 views

Installing issues | unable to open /dev/sda and /dev/sdb

I am installing Ubuntu 14.04 from a USB drive. It boots into the installation and after selecting Install Ubuntu the loading screen appears and stops there. Pressing the left arrow key brings me to a ...
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Ubuntu 12.04.3 - Expanding/Resizing and ext4 partition upon additional Disk in a Hardware RAID 5 [duplicate]

We have a web server configured as hardware RAID 5 with 3pcs 1TB Disk. Usable is 2TB and partition as follows: /var/www/html is ext4 Filesystem Size Used Avail Use% Mounted on /dev/sda1 ...
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1answer
41 views

re-assemble out-of-date raid5?

I need help with my raid5 after it crashed through bad sectors. Previously I could re-assemble it with # mdadm --assemble --force -v /dev/md0 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 but ...
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1answer
74 views

Cannot Install Over Centos 7

I am trying to install Ubuntu 15.04 to replace my existing distro of Linux, Centos 7 Workstation. During the install I get to the point where it asks if I want Ubuntu to overwrite my existing disk ...
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27 views

RAID1 /dev/md0 showing up as /dev/md126 after reboot

I've already configured the file: /etc/mdadm/mdadm.conf with the outcome of : mdadm --detail --scan ARRAY /dev/md0 metadata=1.2 name=compute2:0 UUID=4e0dd53b:c29a881a:795286f7:a649ff4a ARRAY ...
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1answer
48 views

Ubuntu 12.04.3 - Expanding/Resizing LVM partition upon additional Disk in a Hardware RAID 5

We have a database server configured as hardware RAID 5 with 3pcs 1TB Disk. Usable is 2TB and partition as follows: /data is LVM Filesystem Size Used Avail Use% Mounted on /dev/sda1 ...
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15 views

Identify failed drive from RAID 5 NAS

I have a NAS with 4 drives setup in RAID 5. It recently started making a lot of noise (not good) but I couldn't figure out how to get the NAS system (iomega storcentre) to tell me which drive was ...
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32 views

ZFS with existing data on 1 HDD

I'm thinking about adding a ZFS Raid-5 to my Ubuntu Server (Home use only). Currently, I have 2 HDD, 1 is 120GB for OS and the other is 4TB for download and torrent. I will purchase an addition HDD ...
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50 views

Mount RAID 1 disk in Ubuntu 14.04

I have a dead WD My Book Live Duo case but the 2 HDDs inside are still ok. These drives are configured as RAID 1. I contacted WD's technical support and they told me to use Linux to access the files. ...
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24 views

Help! One of my raid partitions has disappeared

First time posting but I can't solve this by my self, so pleas help me. I have a problem, I can't access one of my partitions. I have three 2 TB disks that are running "hardware/intel software ...
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58 views

Rebuilding a RAID 1 array on a production server (Ubuntu 12.04.2 LTS)

I manage a production server which has a RAID 1 array with two identical hard drives. Apologies in advance, I've read many threads on this but due to the critical nature of the server, it will save ...
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19 views

RAID 1 disk from old server not recognized when taken off to a new machine

I had an old Ubuntu server at home, with two 1TB HDD in RAID1 configuration. I stored a lot of my works and stuff there, then eventually stopped using the server and let it get the dust for some time. ...
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58 views

Slow raid5 resync with WD Green drives [closed]

The Question Why is my initial resync so slow? Initially cat /proc/mdstat reported ~ 30000K/sec. I then increased /sys/block/md0/md/stripe_cache_size from 256 to 16384. That increased the speed to ...