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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To RAID or not?

I have the following setup: HP Microserver N40L 1 x 250GB HDisk 1 x 1TB HDisk 2 x 2TB Hdisks Ubuntu for OS Currently I use the server to backup the following hardware: 1 x MacBook Pro running ...
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13 views

new Ubuntu installation to non raid disk using existing raid0

I am trying to install a new Ubuntu partition in dual boot with Windows 7 Home Basic. I have Windows running on a raid0 on my SSD and I have a separate HDD that's not part of the RAID and works as ...
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15 views

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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6 views

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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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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New computer, same RAID. MDADM won't assemble

Ubuntu 12.04 64. Hardware failure (motherboard) led me to build a new machine, and I took the opportunity to do a fresh install of Ubuntu (first one was a learning experience). I moved the raid disks ...
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12 views

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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9 views

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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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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347 views

btrfs two Data sections and enospc error when trying to convert

I currently have a btrfs filesystem setup like this: # btrfs fi df /storage/ Data, RAID1: total=2.33TiB, used=2.32TiB Data, RAID0: total=2.00GiB, used=2.00GiB System, RAID1: total=32.00MiB, ...
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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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180 views

Dual-booting Ubuntu 14.04 with Win 7 on a RAID 0

I'm trying to install Ubuntu 14.04 to dual-boot with my windows 7 in a RAID 0 array of 2 120gb SSDs, but I'm having some problems. I had to reinstall Windows 7 and created a partition for it, with the ...
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9 views

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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10 views

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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8 views

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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7 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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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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21 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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13 views

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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32 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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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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10 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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25 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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402 views

Installing EFI to Raid 1 using partman and seed file, on both drives

So my question is, Is it possible to install the EFI partition onto both drives when doing a seed install on Ubuntu? That way if one drive goes, the relevant efi partition/data is there on the second ...
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40 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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10 views

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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18 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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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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234 views

Degraded mdadm RAID5 array & ARRAY UUIDs mismatch (Ubuntu 14.04.1)

Every reboot on my server results in a halt due to a degraded RAID5 (software) array. The same drive /dev/sdc appears to be dropping out each time. I ignore and boot with a degraded array any ways. ...
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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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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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37 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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38 views

Installation on 3 HD setup: mdadm is missing

I have an SSD (sda) and 2 HDs (sdb,sdc). My target is to install Ubuntu on the SSD and setup a RAID0 over the 2 HD. I manually installed mdadm and created the md0 device and created also the ...
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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 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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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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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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46 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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How can I use Kernel 3.19 in 14.04 now?

So I'm rebuilding my storage server. For stability, I want to use Ubuntu server 14.04 LTS as the OS. However, I'm planning to use Btrfs with RAID 5, and this has been greatly improved in kernel 3.19. ...
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457 views

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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2answers
3k views

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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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 ...
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42 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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190 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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209 views

How to partition for a successfull boot with raid5 + lvm +encryption

I have been trying to make this setup work for several days. The system never boots... When I do a setup without the software raid I can get it to work. How should I set up my system partition to be ...
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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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36 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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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 ...