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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Use RAID0 Array

I'm really new to doing stuff with RAID. I did a fresh install of Ubuntu Server 14.03 and made a RAID0 Array of 3 HDDs. I also set up an LVM on another HDD that's not part of the RAID. The way I set ...
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How can I install Ubuntu onto a software RAID 10 array?

I'm planning to set up a low-traffic server using RAID 10 with four disks. I'd like to have Ubuntu 14.04 installed onto that RAID array. I've seen plenty of guides explaining how to set up RAID 10 ...
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After `apt-get upgrade` mdadm won't auto-assemble RAID at startup

After a simple apt-get upgrade, mdadm won't assemble my intel raid anymore automatically. This leads to fstab entries not being mounted and so the startup fails. I'm dropped into a recovery shell ...
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special device /dev/mapper/jmicron_JRAID1 does not exist

It is my first post .. so first of all thank you all for the good effort. Concerning my problem now. On my Ubuntu 14.04 I used to have a disk (sdb) on raid (software cannot recall raid type). Suddenly ...
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14 views

BTRFS RAID6 array is broken, how do I fix it?

My Btrfs raid 6 array seems to be broken. When try to mount it I get the following error message. I don't know how or why it broke maybe a power outage or something (it happened during my vacation). ...
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12 views

HDD pooling/partitioning suggestions for media server

I have multiple hdds that I would like to pool together. Sizes are as follows: 2x1TB; 2X2TB; and 1x4TB. Running Ubuntu server 14.04 on a separate SSD with the primary purpose of using this machine ...
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7 views

OS drive and Data drive partitioning on Ubuntu Server 14.04

My server has 1GB RAM, 160GB nvidia RAID 1 disk that I want to use for the OS and a 2TB nvidia RAID 1 disk that I want to use for data (for Samba shares). What would be the best partitioning and file ...
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Install Ubuntu on Btrfs Raid1 pool

I have seen the post Installing Ubuntu on btrfs over multiple drives, but the solution suggested there does not help me. Before using Btrfs in a production environment I wanted to give it a try in ...
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One drive removed from RAID5 each restart

After almost each restart my RAID 5 array is being degraded. Very suspisous thing I found in dmesg Log First SDA and SDB logs can be found, Then MD0 - without SDC and then SDC. What can be a ...
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Why there is no GUI assisted RAID configuration and why RAID is so problematic in Linux? [closed]

Linux (particularly Ubuntu) slowly becoming a growing OS among PC enthusiasts, content creators and gamers. And most of them have high-end computers with SSD raid setups, latests GPUs and many core ...
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RocketRaid 642l Driver Ubuntu 14.04.3

I am having issues installing the drivers for my rocketraid 642L card. What happens is during boot it just hangs and then the raid card makes a very loud beep until I reboot. Without their driver ...
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17 views

Software RAID 0 FAILS using mdadm on Kubuntu 15.04

I've read a lot about RAID on linux and decided to go software raid instead of fake. My hardware is 2x Samsung 250GB mSATA ssd in a laptop. So I want to run these in raid 0 configuration. The thing i ...
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60 views

16 TB what filesystem I should use

I need a 16 TB volume by 6 drives x 4TB. I use the last version of ubuntu. I need the filsytem very stable. How I can created this volume. I should use ext4, xfs, zfs, btrfs, with mdadm ? Thanks a ...
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21 views

Virtual disks not detected on hardware RAID with megaraid_sas drivers

I'm running Ubuntu 14.04.3 Server. I have an Intel RMS25CB080 hardware RAID controller, which internally has an LSI MegaRAID SAS 2208 controller. I boot off of a software (mdadm) RAID 1 array ...
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27 views

How update mpt2sas driver?

Is there some guide to update mpt2sas driver to latest version 20.100.00.00 (git)? I have strange NMIs in logs. Tried everything - CPUs, memory, MB Bios, raid controller (LSI 2008) bios and fw, Intel ...
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Ubuntu server 14.04 with adaptec RAID. How do I find my RAID folder in webmin

Ok so probably you'll be laughing at me for such a noob question... I have just set up the above system that I want to administer through webmin. All working fine but can't find RAID directory or ...
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Create RAID array of image files

OK, so I've got three image files in /home/, and they each reside on different physical drives: image1.img image2.img image3.img Each image is the same size, and I want to put the images ...
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How to check which disk is mounted where? How to mount all spare disks?

Doing a df -h: alvas@mt:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 3.5T 2.7T 597G 83% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 63G ...
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23 views

Please help recovering accidentally formatted NSA disk (linux raid)

I accidentally formatted wrong disk using gnome disk utility. The Toshiba 1TB disk has been used in NAS Zyxel NSA320 and i planned to mount it in my ubuntu to make a backup. I use only one 1TB disk ...
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50 views

How to use HP's RAID driver for Smart Array B120i, e.g. ProLiant Microserver G8

At HP's Certification Matrices it is mentioned that there are no Smart Array B120i RAID controller drivers. It is suggested to use the controller in AHCI mode, use software RAID instead and forget ...
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How to install Ubuntu 14.04 64-bit with a dual-boot RAID 1 partition on an UEFI/GPT system?

I have a computer with dual SSDs and Win (7) pre-installed on another disk. The pre-installation uses (U)EFI/GPT boot. I want to install Ubuntu 14.04 64-bit desktop on a RAID1 root partition on my ...
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51 views

EFI/GPT system partion with bootable RAID 1 system installation

I've used the ubuntu server installation image to install onto a RAID 1, which is two disks mirrored for redundancy. My configuration is as follows: /dev/sda - 500GB /dev/sda1 - 1GB, EFI system ...
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Ubuntu 15.04 Desktop disk mirroring

I have just installed Ubuntu in a dual boot system with Windows in my computer. This is my disk configuration: Disk /dev/sda: 931,5 GiB, 1000204886016 bytes, 1953525168 sectors Units: sectors of 1 * ...
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Drive failed in RAID, other drive has SMART errors. Which to trust?

I've had a RAID1 setup running in my machine for a couple of years, and recently the array has become degraded. Looking at mdadm information, it looks like the one drive has failed, but when I look at ...
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VMWare passthrough of Adaptec RAID 6405 on client Ubuntu 14.04

A while back, I asked this question on how to install Adaptec RAID 6405 on Ubuntu 12.04 and got a helpful answer :) Install Adaptec RAID 6405 on Ubuntu 12.04 (3.13.0-37-generic) Now, we are running a ...
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86 views

Manually partitioning 15.04 Server for RAID 0

I'm trying to install Ubuntu Server (15.04) on a 2012 Mac mini with two 240GB SSDs. I recognize that Macs can be tricky with EFI v. BIOS, but that's another issue. I'd like to install Ubuntu Server on ...
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65 views

GRUB fails to install with LVM setup

I have 1x 160GB HDD and 2x 80GB. The way I want to partition all the disks is as follows, GPT partition tables with 10GB partitions which will be LVM physical volumes. The rest of the disk space will ...
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50 views

Installing Ubuntu woes (2x SSD in RAID 0 & 1x HDD)

I have unsuccessfully been attempting to install Ubuntu over the last few days. The only thing I have accomplished was corrupting my windows installation and having to recover it. What I know: I ...
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Ubuntu Software RAID server and VMware conversion tool

I have tried to find an answer to this, through several unsuccessful forum searches. I have a Hosted Virtual Private Ubuntu Server that I have no physical access to. I downloaded VMware's vCenter ...
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Error removing an HDD from a RAID1 BTRFS array

I setup a btrfs filesystem on 3 disks with RAID 1. Somehow, a small portion (2GiB) got used as RAID0. At the time, no amount of running btrfs balance -dconvert raid1 -mconvert raid1 would change it so ...
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Intel RST (option rom, bios) raid and mdamd, how to?

I have 4 x 6TB hard drives which has been setup for RAID 10 in the BIOS (option rom: Intel RST (v12.7.0.1936)) on my P6T7 WS ASUS Motherboard with modded bios (BIOS) which works : lrwxrwxrwx 1 root ...
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Ubuntu Server 12.04.2 LTS over HP Proliant MicroServer G7 N40L | Rebuild RAID 1

I am doing testing with an HP Proliant Microserver G7 N40L that I acquire recently. I want to configurate 2 hard disks (1 TB per hard disk) in RAID 1 array. I mounted the volume like this video and I ...
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How to change raid1 to raid 11?

raid1 --> /dev/sdb /dev/sdc raid11 --> /dev/sdd /dev/sde /dev/sdd -> bad sector /dev/sde -> new hard disk I have for hard disk. And I have created two raid in that with raid array raid1 ...
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16 views

How do I change my RAID configuration(mdadm)

I would like to change my current partitioning and RAID configuration without reinstalling Ubuntu 15.04. Here is the output of sudo fdisk -l: md0 is /home and md1 is /tmp I would like to change it ...
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Copying RAID 5 hard drives

In 2008 or 2009, I put together a server that had four 200GB disks in RAID 5. The server doesn't work any more, but I still have the disks. I can't easily put all of the disks into my current system ...
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Adding a Second Hard Drive to a Ubuntu Server

I am thinking about installing a second hard drive into my ubuntu server. How hard is it to do this bearing in mind that it's a server and has no GUI. Also is there some way to merge the 2 hard drives ...
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Mdadm array showing as UUID?

I have an ssd with ubuntu and then 4 hdds in a mdadm array. I had to reinstall ubuntu and now am seeing the array but only mounted as the UUID and the array appears as an external drive in ubuntu. ...
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Mount Wester Digital disk from NAS

I had a WD Nas with a single disk (WD 1000G032). The cabinet broke, so now I have it hooked up with my computer and is trying to mount it in Ubuntu. I know the disk works and it shows up when I do ...
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51 views

Failing to boot Ubuntu 14.04 server from raid1 array

I am trying to install Ubuntu server (14.04 LTS) in a raid1 configuration. The machine will be a network video recorder, recording video from IP cameras and storing for a period of time until space ...
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38 views

Is TRIM Supported for RAID0 in Intel Matrix RAID in Ubuntu 14.04?

It appears that TRIM is supported for RAID0 arrays with mdraid in Ubuntu 14.04. Intel now supports TRIM to Intel Matrix RAID (RSTe) RAID0 as of series 7 chipsets (and Intel's Windows driver). Ubuntu ...
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Howto install onto a software RAID?

I am trying to install onto an ASUS system with an LSI (fake) raid controller. Unlike debian, ubuntu 14 detected it and installed drivers and utilities. Then it creates a RAID 1 as directed. All is ...
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RAID1 Rebuild/Resync on Ubuntu 14.04 [closed]

Can someone also tell me what command I can use to force a rebuild/re-sync on a RAID1 array?
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Home Backup Server with Ubuntu - Drive Controller Configuration

I am planning a build for a personal backup server; building essentially a NAS that I would install backup utilities on. I want to run Ubuntu Server as the OS, and am hoping for around 5-6 individual ...
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RAID1 with Ubuntu on Asus M5A78L-M/USB3

I have been able to correctly set up the above mentioned motherboard with the onboard RAID with Windows 7, but I need to build another machine (same motherboard) but running Linux (Ubuntu) and my ...
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RAID1 Array Ubuntu Server 14.04.2 New Disk Fails to Boot

I have RAID1 set up with two 120GB SSDs. I removed one of the drives and inserted another 120GB SSD with an identical partition layout to test the RAID rebuilding and the RAID rebuilt successfully. ...
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Intel Fakeraid Messed Up

I've managed to screw up my Intel fakeraid. It's a RAID-5. I've lately had some trouble with disks becoming disconnected, and I haven't identified whether it's the disk that's at fault, the cable, or ...
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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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45 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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49 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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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, ...