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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SSD Not part of Raid?

I was playing around with BTRFS calculator (link below). I have 2 2TB Drives and 1 3TB drive. I also have a 120GB SSD. I was thinking Raid 5 with the operating system loaded on the SSD. It said I ...
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61 views

Auto-mount flashcache'd drive (RAID array) on startup

I have recently created a RAID5 array with mdadm and cached it through SSD using flashcache. Everything works great, however I cannot make the drive to be mounted on system's startup: Every time a get ...
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35 views

RAID5 disappears after reboot

I am struggling with setting up RAID5 for my workstation running Ubuntu. Having read a plenty of guides and tutorials I managed to: create a RAID5 array from 3 disks in Intel RST ROM Utility setup ...
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86 views

SATA configuration mode RAID doesn't pick up SSD

I just got a laptop with Windows 10 on a 500gb SSD. I partitioned it in order to install Ubuntu. When I got to the Ubuntu installation screen, I couldn't pick up my SSD (it only picked up the HDD). In ...
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1answer
74 views

Recovering a healthy RAID disk from an Ubuntu server: mdadm no recogniseable superblock

I've had a series of different issues with recovering a RAID disk, ending with the error reported in the subject. Please skip the long story to come to the conclusions if you want. Long story: I ...
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69 views

RAID array shared between Windows and Ubuntu

I am booting both Windows 10 and Ubuntu 14.04 off their own dedicated SSDs. No problem. I have 3 2TB HDDs I would like to run in a RAID5 array which I can share between both operating systems. I ...
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1answer
127 views

Mount point [UUID] does not exist (Ubuntu 14.04 LTS)

I have an Ubuntu desktop with 1xSSD with the system installed (/dev/sda) and 4xHDDs running in softraid (/dev/md0, sd[b-e]). Currently whenever I power on my PC, Ubuntu initially fails to boot, saying:...
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96 views

MAAS 1.7.6: ProLiant DL360 Gen9 - HP Dynamic Smart Array B120i controller driver for Ubuntu 14.04 does not work when configured as RAID 1 device

We are having issues configuring two ProLiant DL360 Gen9 servers, which are configured in a RAID 1 and in UEFI mode. The installation gets stuck at 'booting under maas direction'. The servers have ...
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31 views

Nagios service not showing up in Web Gui

I have a Nagios install and am trying to add check_raid plug in. I have 3 custom cfg files that I added to nagios.cfg called custom-commands.cfg custom-servicegroups.cfg and custom-services.cfg. They ...
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86 views

mounting raid1 root partition after mdadm: create group disk not found

i seem to have this problem: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1335642 though #4 is not working for me i can boot live system and with mdadmn --assemble --scan i was able to ...
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37 views

Trying to monitor a windows raid with Nagios on Ubuntu 15.10

Hello I am trying to get my Nagios install, which is working fine, to monitor a windows server with some raid disks. I have a nagios installation working but when I installed the nagios-plugins-...
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87 views

mdadm: partition is not a block device

I was trying to create a RAID 1 partition by running the command mdadm --create /dev/md0 --verbose --metadata=0.9 --raid-devices=2 --level=raid1 --run /dev/sdc1 missing. But mdadm's response was: ...
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10 views

mdadm raid superblocks gone after a power cycle and moving the array ?

Our RAID superblock issue has many of the same details as this We have not been so lucky to see the raid again to recover data and start over . What complicates our issue is this is a 24 disk ...
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13 views

What “cbaaacigei” means in /dev/mapper/isw_cbaaacigei_foobar?

After creating an Intel software raid with the command dmraid --format isw --create foobar --type 0 --disk /dev/sdb,/dev/sdc a RAID-set was created with the name isw_cbaaacigei_foobar After ...
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1answer
79 views

Ubuntu Autopilot MAAS RAID Question

I am about to start a small endeavour of setting up a small private test cloud and see one of the requirements being that each server requires 2 disks. All of my servers are currently configured ...
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1answer
78 views

How to restore mdadm raid 1 from one HDD

I had 2 HDD's as /dev/md0 where was simple RAID1(mirror) with one partition. First it was created /dev/md0 and then there was created Filesystem. Now I have only one HDD from this RAID and i want ...
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37 views

df and system report incorrect disk capacity of raid5 array

I have a new Adaptec 8405 sata raid controller and started with 3x WD Red 4TB drives giving me a 8TB array (or actually 7.3TB). I installed Ubuntu on a seperate 500GB WD Green and mounted the array ...
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51 views

How do I create a software raid on non system drives in Ubuntu 14.04?

The OS is installed on a standalone SSD, but I have 3x 1TB drives I want to configure in a RAID 5 for docs, applications, games, etc. How do I do this? I've searched Google but the only results I ...
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194 views

Create dualboot with existing Windows raid array by adding SSD

I currently have a 3-disk RAID 0 array with Windows 10 installed. The array is a hardware array via my MSI motherboard. I would like to add a new blank SSD drive with K/Ubuntu on it, and have that ...
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15 views

Add a RAID to existing setup

So let's say I have 3 drives. D1 = 120GB SSD with Ubuntu 14.04 on it D2 = 2TB NAS Drive D3 = 2TB NAS Drive If I have D1 already setup and running Ubuntu how could I add D2 and D3 as a RAID 1 array ...
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167 views

High CPU load, low core usage, (ECC) memory error in kernel

I am having a super weird behavior ... The CPU load of my computer goes through the roof (>4 on a 8core machine) but there is no process that is taking much CPU (see attached image) Though the 8 core ...
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1answer
95 views

ZFS with L2ARC use and reliability

I am planning/building an ubuntu server 15.10 which will primarily be used for a NAS. I opted for Ubuntu Server over the likes of FreeNas as in the future I'll be able to use other features and ...
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1answer
68 views

is this best partition for ubuntu server? [closed]

I have 250gb ssd, 6x 3tb hdd and 16gb memory. I partitioned ssd; 16gb swap, 30gb /, rest of /home raid 6 for hdd and no spare, no swap just ext4 /home I will use this server for store all my media ...
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36 views

xfs on raid0(mdadm) proper mounting

Reading manuals on howto tune xfs on raid is totally crazy. In my case I have raid0 of 2 disks with 512K chunk size. Physical disk block size is 4096 The correct su and sw should be su=512k and sw=2? ...
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33 views

mdadm raid1 not recognized if the HDs are put in another bay

I have created a RAID1 2TBx2 using mdadm in Ubuntu. The two drives are in an external bay (Icy Box IB-120StU3-Wh Dual Bay Docking Station) connected via USB to the laptop. Everything works fine. ...
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17 views

NAS JBOD2 2 Drive Raid 0 Enclosure Failure Data Recovery

0 down vote favorite I have a Caldigit Enclosure that had 2 2TB Sata Hard Drives in the unit. The Enclosure seems to have failed during a data recovery operation where the partition was lost during a ...
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21 views

Install Ubuntu 14.04 with RAID 1

I want to install the ubuntu 14.04 desktop LTS on my computer. I have 1 SSD and 2 HDDs and I want to set the SSD as the boot drive and the 2 HDDs as RAID 1. Is this possible and if so, what are the ...
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6 views

Compatibility of Ubuntu 12.04 with HW RAID part number: L5-25413-17

I am setting up a Linux server with Ubuntu 12.04. I want to use HW RAID part number L5-25413-17. Has anyone successfully done this?
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30 views

Trouble Installing 14.04

9.10 64 Bit works just fine. No later version will install. If I install anything newer than 9.10 I get the error: attempt to read or write outside of disk 'hd0' Boot Repair and all the online ...
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89 views

Recover Server from recovery mode(firewall closes ports)

My server( Ubuntu 14.04 - Plesk - RAID1 ) is now in normal mode. Almost all ports disabled by firewall as plesk port 8443, so plesk login panel is not opening. Also Website is not opening. ...
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28 views

dkms.conf location for new build RocketRaid documentation

Noob at work here. I have Ubuntu Server 14.04.03 LTS installed and running. I added a Highpoint RocketRaid 640L internal SATA adapter. I installed 4 drives and have them configured in RAID 5 via the ...
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143 views

Can I transfer my mdadm Software raid to a new system in case of hardware failure?

I have minimal experience with mdadm and software RAID, but I have a Dell Poweredge T110 II with two separate RAID 0 arrays, a total of two drives each array. I'm anxious that the software setup won'...
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1answer
23 views

Ubuntu 14.04 fails to recognize FakeRaid volume

I'm trying to setup Ubuntu 14.04 AMD64 on a new machine based on an Asus Z10PE-D8 motherboard with Intel FakeRaid. The boot drive is an SSD with dual boot Windows 7 and Linux. I also have two ...
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2answers
224 views

MaaS node deployment failing on HP Proliant DL380 G5

i have a little lab environment with 3 DL380 G5s. All of them have 2 disks forming RAID 1+0. Got one set up as maas controller with ubuntu 14.04 (had no problem using LVM to install Ubuntu on the raid)...
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60 views

Does the 3ware SAS 9750-4i work on 14.04.03 LTS?

I will be installing a 3ware SAS 9750-4i RAID controller hooked up to 2 x 2TB Seagate Surveillance HDDs in a RAID-0 stripe config. My intention is to use Ubuntu 14.04.03 LTS (either Server of DT, not ...
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13 views

How can I split a partition in a RAID1 array on ubuntu?

I just purchased a brand new server on OVH with disk specification: 2 x480GB of SSD SOFT. When I do df -h, the output is: Filesystem Size Used Avail Use% Mounted on /dev/root 20G 13G ...
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40 views

Hardware RAID controller on Ubuntu Server 14.01 server

It seems Ubuntu Server 14.04.1 does not support Hardware Raid controller (Smart Array B120i - embedded). Are there any drivers that will help support?
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44 views

Ubuntu Server 14.04 LTS Software Raid1 + LVM setup

Is it possible to software Raid1 + LVM on a already running production server? If possible where can I get instructions please. Many thanks..
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65 views

Failure to mount raid array after upgrade to 15.10

I need help fixing my RAID arrays. here is what happened: I previously used ubuntu 14.04 with an SDD for the system and two identical 1TB drives as RAID1 array. Each drive is partitioned in two ...
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39 views

Migrating from dmraid to mdadm

I have a problem that a 6.9TB RAID5(FakeRaid) logical volume is shown as 3.2TB in Ubuntu. Some study on the web and I found that this may be because dmraid is being used while mdadm has better support ...
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47 views

Raid 5 Array will not start and one drive failing SMART test

First of all please forgive my noobieness but I will try to provide as much info as complete as possible. I had recently experienced a power outage that resulted in my Raid 5 Array from starting. ...
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1answer
34 views

Intel RAID5 array Shows < 50% space

I created a RAID5 array from the bios of 3 Nos of 4TB disks. Then I created a Volume in Bios which shows as 6.9TB. But in ubuntu this volume is shown as 3.2TB. Why is this so and how can I correct ...
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30 views

samba share encrypted volume

I'm sure this has been answered a thousand times, but I can't find one, so apologies. I'm running Ubuntu 14.04 LTS on a file server, with samba 4.1.6. Shared files are in a RAID volume, /dev/mapper/...
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76 views

Can't mount hardware RAID 1

Hello I am trying to mount my hardware RAID 1 partition but it gives an error whenever I am trying to do so. Note: I can't do anything to modify its partition since it has a lot of important data. ...
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22 views

No HP RAID with ubuntu 12.04

I've just bought a pair of HP DL360 G9's which have an onboard RAID card, I've configured the RAID volume and put in my kickstart CD only to find that individual disks are visible (SDA, SDB, etc) ...
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97 views

grub rescue on server with lvm+raid1

I have grub rescue > prompt after a power failure. I do have a Ubuntu Live CD. Any procedures on how to install grub on this kind of setup. raid device - md0 boot partition - VG-lv1 raid devices - ...
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20 views

How to install RAID management tool for ubuntu 14.04.3

This is the output of lsb_release -a command; No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty According to http:/...
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19 views

RAID 1 on existing system

I have a system that has been running for over 2 years with one disk. Recently, I brought another disk same size and speed as the current drive. I wanted to add the new drive and convert to a RAID ...
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1answer
86 views

Do I have to configure a server with hardware RAID?

I recently installed Ubuntu Server 14.04 an HP ProLiant ML350 Generation 6 (G6) server, that used run windows, which appears to have RAID controller: The Ubuntu Community Help Wiki says: ...
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77 views

After Installation Ubuntu Server 14.04 Show Blank Screen and can't Login (Problem with Raid)

I have a home server with below specification: - Asus Z87-C motherboard - 2 Internal Network Card (One On board and One PCI) - 2 X HDD 1TB (RAID1-Mirror through motherboard solution - Not Software ...