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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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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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 ...
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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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26 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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19 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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15 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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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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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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21 views

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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19 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
40 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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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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41 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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10 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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22 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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24 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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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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38 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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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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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 ...
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20 views

Ubuntu OS on SSD and RAID 1 for data files

I have an ubuntu server OS installed on 80GB SSD HDD. I also have 2 1TB HDD used for data storage.Both were used as RAID 1 before. Now as my OS got corrupted I reinstalled with Ubuntu server 14.04. I ...
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Rebuild a vaporized dmraid array using mdadm

Executive Summary While upgrading from Utopic to Vivid, my system removed dmraid, which I was using as the RAID controller for the array that I booted from. How can I rebuild the array using mdadm ...
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23 views

Is it possible to use a dedicated parity drive without striping?

I'm setting up a log server. I'd like to set them up so that each disk is independent of the next, but the last disk is parity of all the rest. The reason why I want this is because: You can't ...
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Anyone else having trouble accessing dynamic windows partitions from Ubuntu?

So, I have been trying to access my striped (software raid disk from Ubuntu) for at least six months. Now I know there are guides out there, but they are a bit hard to follow, at least for me. So I ...
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41 views

btrfs performance parallel access

I'm running a Raid5 (3x 500GB Sata2 HDD) based on btrfs 3.12 (Ubuntu 14.04 x64) and a VirutalBox VM uses this volume. As long as no other process accesses the volume, the VM runs fine. But recently I ...
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How to install Hardware RAID Controller in Ubuntu Server

I am setting up an Ubuntu Server and I have a RAID drive with 5 disks with a VIA V-Raid controller, but I cannot configure the RAID drive as Ubuntu does not see it. What should I do? I need the RAID ...
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25 views

Installing Ubuntu On a Seperate HDD

I was wondering if I could install ubuntu on a 500GB HDD while there are already 2 other HDDs in RAID 0 with windows 8 installed. Any help is appreciated.
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61 views

How to fix unbootable server after upgrade to 14.04

I had a pretty vanilla install of 12.04 running on a headless server with a software RAID1 array. I ran do-release-upgrade to upgrade to 14.04, and it seemed to run without issue. The only mistake I ...
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177 views

Cannot install Ubuntu - stuck at 'Installation Type'

I am trying to install Ubuntu on my computer, but am stuck at choosing the device and partition to install to. I have three harddrives, one of them was going to be dedicated to Ubuntu, but two of the ...
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Software RAID 1 is only showing half its expected capacity

While installing Ubuntu 14.10 I manually partitioned and set up software RAID 1. I have 4 HDDs, each 2 TB. On each drive I set 8 GB of swap space and made the rest ext4 and bootable (both as software ...
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RAID not assembling after reboot, throws “uuid not in config file” even though it is

I created a RAID5 array using 4 x 2.0Tb drives using the disks GUI. I used mdadm --detail --scan >> /etc/mdadm/mdadm.conf to save the configuration. I opened the mdadm.conf file and double ...
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124 views

How do I install Ubuntu 14 with UEFI and software raid0 on GPT SDDs

I usually work on a Mac and would like to setup a Linux workstation for Development. I have no experience installing Linux, because the servers I work with are hosted VMs. Most of the Ubuntu specific ...
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42 views

Partitioning Unallocated LVM Space as New Physical Partition with Hardware RAID

I'm a newbie to linux and partitioning and apologies in advance if this has been answered before; I've searched extensively on the web for answer, and after being unsuccessful I decided to post a ...
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Shouldn't have left SATA port empty when creating RAID?

I recently added an md RAID5 to one of my computers. The boot & root filesystems were on the motherboard's SATA port 1, which became /dev/sda. I left port 2 empty for future use (oops?!) and ...
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Ubuntu Server 14.04 TLS plus Hardware RAID

I have just completed hadrware installation of my new RAID server which will run with Ubuntu Server OS. I have installed Ubuntu Server OS and everything run seemingly without problems. However, I ...
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Unable to install ubuntu alongside windows 8.1 with raid0: no partitions detected

I tried installing Ubuntu 14.04 alongside windows 8.1 on my machine using an Ununtu USB drive in UEFI mode, but no luck: My machine is Asus UX301, preinstalled with Windows 8, upgraded to 8.1. Got ...
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Hide partitions on RAID0 in GRUB2

I'm trying to hide two Windows versions from each other. I know how to do this on a single drive, however, it seems to be somewhat more difficult on a RAID0. More precisely, I don't know how to ...
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32 views

Getting '??? ???' when trying to install Ubuntu

I am trying to install Ubuntu on my older laptop and whenever I get to the format your hard drive part it pops up with the message ??? ???. I am pretty sure it is to do with how my partitions were set ...
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52 views

How To Mount RAID0 on Ubuntu (to recover data from Acer Aspire S5 Ultrabook)

Recently I ran into booting issues with windows 7 on my Acer Aspire S5 ultrabook. Before bootup, the system indicated that one of the physical disks (the ultrabook has two 128 GB SSDs in preinstalled ...
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UBUNTU Server Installer Does not Recognize the Hard Drives On A RAID-Based Server

My Usual Workflow: Usually I get/build a server, add the hard drives into it, then I install UBUNTU-Server through a bootable USB. Current Problem: I do have a set of servers, that have RAID ...
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Boot failure - /dev/mapper does not exist

I had a previously bootable version of Ubuntu, however now when I try to boot I see the error message ALERT! /dev/mapper/isw_bdacadajjgh_ARRAY0p5 does not exist. Dropping to a shell This is a work ...
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Unable to mount the FreeAgent GoFlex device

$ mount /root/Desktop/image.dd /root/mnt/recover -t ntfs Failed to read last sector (625137344): Invalid argument HINTS: Either the volume is a RAID/LDM but it wasn't setup yet, or it was not setup ...
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mount ssd disk on new acquired server

I have just acquired a new 3x 120Go SSD server (within soyoustart Soft Raid), but I can only see/use one SSD disk! Should I mount the other 2 disks ? What should be the new content of fstab file ? ...
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Crashed Ubuntu 12.04 Server -> Need Help Recovering & Transitioning To New Server

I have been running an Ubuntu 12.04 server with a single 2 TB hard drive in a somewhat-older small form-factor (SFF) PC for a while now. I had a headless CrashPlan client installed on it to back up ...
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Ubuntu 14.10 does trim SSD RAID 0 discs?

I've got Ubuntu 14.10 in a RAID 0 set up with 2 x Samsung Evo 840 SSD 256Mb, for performance reasons while acessing/modificating very large files. I've also got a schedule backup to another HDD for ...
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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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99 views

Software RAID and Ubuntu 14.04.2

I recently changed my Plex server from the headless Ubuntu Server 14.04.1 to Debian 7.8, during which stability issues sprouted up with my software RAID which I thought were tied to Debian. I ...
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Can't run commands on server, Ubuntu 14.04

I'm pretty new at this, so it's likely that the problem is user error... Basically, I can SSH into the server and navigate around, but when I try to: sudo apt-get update I get a message: ...