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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Migrating W7 file server to ubuntu server 14.04

About 3 years ago a built a file server with a LSI MegaRAID 9280-24i4e hardware raid controller along with AMD Phenom II x4 cpu, 8GB of RAM and the OS that I chose was W7 and is installed on separate ...
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2answers
14 views

Disk has disapeared, Raid 1 appears to have changed disks :( and emergency mode!

What a muddle....I had managed to set up a Ubuntu 16 server utilising a software RAID 1=(sda & sdb) Had added a second disc mounted to /media/BackupDrive sdc. all with samba, all was well :) ...
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11 views

How to do RAID 0 or 1 on Chromebook(Hear me out before you say not Ubuntu)?

I am a amateur at Chromebook just saying! Ok,so I just recently bought a HP Chromebook 14-ak010nr from hp.com. After a few days, I got tired of the 16 GB storage when trying to dual-boot Ubuntu(even ...
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9 views

mdadm monitoring script after boot

the mdadm monitoring program is not working after boot. When i kill the process afterwards and run mdadm --monitor --scan again, everything is ok and the script runs on failures. Here ist my ...
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23 views

Unable to Partition Software RAID 0 array with 16.04 Server + Z170 Skylake, ACPI Exception in log

I'm trying to do a clean install of 16.04 on some new hardware, and I'm unable to partition/install onto a RAID 0 array. Motherboard: AsRock Z170 Fatal1ty ITX/ac (SATA devices set to AHCI, also tried ...
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22 views

Filesystem/RAID configuration to stripe/mirror three hard drives

I have 3 HDDs in my workstation: 1.5 TB (drive "A") 2TB (drive "B") 4TB (drive "C") I am doing a fresh install of 16.04. I would like to find a filesystem/RAID configuration that allows me to ...
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6 views

Adding disk and converting RAID 0 to 5

I used MDADM to create a 4-disk RAID 0. I have another disk I want to add and convert the array to RAID 5. I'm already aware of the risks of RAID 5 but it is my best option at this time. How would I ...
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2answers
81 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
1k 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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2answers
451 views

Will the boot-degraded flag remain after upgrading to 14.04?

I am currently running Ubuntu 12.04 and have a RAID setup with the boot-degraded option. If I upgrade to 14.04 will the boot-degraded option remain? I manage this server remotely and would hate to ...
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1answer
29 views

Raid 5 array built with incorrect partition size (Ubuntu Server 14.04)

First of all, I am an absolute beginner with Ubuntu Server. I decided to build my own server and running it with 4x 3TB drives in a software RAID mounted as /home and an SSD with the OS on it. When I ...
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72 views

RAID 0 installation instructions

I am looking for specific instructions for installing Ubuntu (clean install) on 2 identical hard drives in a RAID 0 configuration (striped). Have never found anything that describes how to do ...
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0answers
30 views

How do you make a bigger distribution for installation? [closed]

I liked the ubuntu installer DVD. Before it had installer disk, not live DVD and had a size of 4.4 GB, but needed to download Kubuntu\xubuntu\Ubuntu Studio too and config it. I have 2x Samsung 850 ...
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0answers
3 views

DMRaid Not Detecting its disks

We had a software raid using dmraid in an ubuntu 14.04 box. For some reason, we changed the sata ports per disk. The disks were removed and added again to the case but on different sata ports ...
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17 views

Drive Encryption Ubuntu Server 15.10

I have a small server running Ubuntu Server 15.10 from a usb stick. I have 6 drives of varying size all formatted to ext4. 2 drives I plan to configure using Raid 1. The remaining 4 drives I plan to ...
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1answer
27 views

Kernel panic not syncing timeout synchronizing machine check over cpus

We installed an Ubuntu Server 14.04.4 LTS to one of our customer's server. Server has large storage drives and software RAIDed SSD disks for OS. Server is crashing randomly. And we are getting error ...
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1answer
40 views

What is 'AHCI mode' - HP ProLiant MicroServer Gen8

I have just purchased this server and I would like to install Ubuntu Server on it. I would like to keep RAID support, although I'm currently only using one HDD which will have my files and OS on it. ...
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2answers
6k views

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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1answer
13 views

Pointers / advice on Ubuntu Server install on HP Gen 8 G1610T microserver

I've recently purchased an HPE Microserver G8 GP1610T, 120GB SSD drive and a couple of 2TB drives to build an Ubuntu based server with the OS on the SSD drive and two 2TB drives as mirrored (RAID1) ...
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0answers
13 views

kworker using all my IOs, Postgres slow

I have 2 SSDs set up in RAID 0 configuration with a single volume on them that I've been using without problems for 3 months straight to run a PostgreSQL database. Suddenly, today, the DB got really ...
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12 views

Server 14.04 Install Onto Software RAID1 Fails to Boot

New 14.04 server install onto host with 2 x 1 Tb drives, followed https://help.ubuntu.com/lts/serverguide/advanced-installation.html to setup a software RAID 1, end of install reboot and I get no ...
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1answer
41 views

mdadm raid 1 to raid 0 (or lvm…)

I currently have a machine with 2x3TB in software raid 1 (mdadm, Ubuntu 15.04). I would prefer to keep the data on the disks, but I can risk losing it. Are there any options to migrate without ...
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17 views

ZFS zpool import in ubuntu taking very long after system crash and reinstall OS

Don't know if the events were related in any way: zpool set to automatically run scrub on crontab, most recent scrub completed a few days ago, 3 unrepairable errors on 3 files. I did not require ...
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2answers
6k views

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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2answers
127 views

Can I manage ZFS with Landscape and MAAS?

I have 5 different servers. I am very interested in installing ZFS across all of them. I also am interested in using JuJu, MAAS, and Landscape to automate the installation of ZFS, and the management ...
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2answers
28 views

Installing Steam games on a RAID 0 array

So I just put a few old drives in a RAID 0 using mdadm and it was originally just for STeam games, but when I hit install, I don't know how to make it download onto my RAID 0 array... So is there a ...
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19 views

Raid 0 drives are not detected during Ubuntu 15.10 installation on GT72S 6QE dominator pro G

I have GT72S dominator pro G, with 128+128 Gb RAID 0 configured SSDs. I have 1TB mechanical disc as well. Windows 10 on UEFI mode is already installed. Trying to dual boot ubuntu and w10. The problem ...
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How do I add a partition (specifically swap) to my raid0 laptop setup?

EDIT: yes, gparted was the (in hindsight obvious) answer I foolishly didn't create swap space when I installed Ubuntu alongside Windows on my Acer laptop with 2 SSDs preconfigured as raid0. Now I ...
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2answers
7k views

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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26 views

Help, cannot install Grub

I have a recent motherboard (GA-X79-UP4), and a couple of 3TB Seagate drives. Trying to install Ubuntu 15.10, in a RAID5 configuration. Using the server image, since the desktop one does not seem to ...
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What does this fstab configuration line mean?

I am trying to mount a RAID array on my computer, and I found a guide on the Internet that told me to add this file to /etc/fstab: /dev/md0 /mnt/raid/ext4 defaults 0 0 What does /dev/md0 and 0 0 ...
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20 views

Creating boot partitions on multiple disks

I'm trying to get some redundancy with RAID1 on my Ubuntu Server box. I've made some good progress using the install wizard but I'm stuck on the following: >> lsblk NAME ...
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4answers
121k views

How do I install GRUB on a RAID system installation?

I'm trying to setup and install Ubuntu on a RAID 1 setup. I have two disks, sdb and sdc. I've been following this guide https://help.ubuntu.com/community/Installation/SoftwareRAID which more or less ...
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14 views

Procedure for rebooting server with Soft RAID mdadm

I've just made a raid10 on my ubuntu 14.04 server, and i was wondering if there was any step too do if i would to shutdown/reboot my server. It a Software RAID with mdadm. Do i need to make a script ...
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610 views

Ubuntu 14.04 install on hardware with RAID

I've just built a new machine using an ASUS Mobo with 8GB of RAM and set up RAID 10 with 4 new HDD. I want to install Ubuntu 14.04 on it and so far have tried to do so 3 times with no luck. The ...
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8answers
31k views

How can I physically identify a single drive in a RAID array?

I have an external drive bay with 4 eSATA disks in it. My system has a 4-port eSATA card, as well as a pair of internal hardware RAID1 drives. The external drives are in software RAID1 pairs as ...
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2answers
29 views

How do I recover my RAID 1 file system after formatting it?

I used mkfs.exfat /dev/md0p1 by mistake, and killed my RAID 1 instead of formatting a micro SD card. Very dumb, I know. How can I undo this colossal mistake? I'm reasonably confident that the two hard ...
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1answer
13 views

Convert software RAID fileserver from Windows to Ubuntu

I currently have a fileserver running on Windows 7 (it started as an old backup machine but has grown). It has 1 SSD for the OS, and 6 1TB HDDs, in 3 RAID 1 pairs. This was done via Windows' disk ...
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2answers
22k views

Which is better for a home media server: zfs or btrfs or LVM/md? [closed]

I'm looking at building a new home server and would like a flexible filesystem. Both btrfs and zfs are interesting. I want to be able to do soft raid and have flexible solution allowing me to expand ...
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0answers
23 views

Ubuntu won't boot after install on software raid r

I have installed server v15.10 and created a software raid 5 array. After partitioning and setting the EFI system partition as bootable it does the install with no problems. When done it reboots and ...
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37 views

Trying to mount old NAS hard drive - mount: Structure needs cleaning

I had a Western digital. The software was not working anymore, so I remove the hard drive. The HD is a Western Digital Caviar Green of 1 To I connect through a USB hard drive converter and..... ...
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0answers
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Is my mdadm command correct, should I check something else before entering it?

The question: Would someone please confirm that I have investigated the correct factors and am about to use the correct mdadm command before I do something that might damage the data in my ...
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0answers
15 views

MDADM Existing RAID

I just swapped from Fedora 20 over to Ubuntu 14.04 LTS. I have a pair of drives that were setup using RAID 1 (mdadm) and working beautifully. The OS is on a third drive (SSD). The web is awash in ...
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371 views

Unable to access “222 GB Volume”

I've installed ubuntu 14.04 along with windows 8.1. After installing ubuntu I'm unable to boot windows and unable to mount my 222 GB volume. I got following error when i tried to mount my 222 GB ...
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21 views

Extend primary partition [duplicate]

In planning for the future, I've been trying to extend the total size of our primary partition running Ubuntu Server 14.04 (from 6TB to 15TB). It was setup as a virtual disk (PERC H730 RAID ...
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1answer
91 views

Issue setting up Samba on Ubuntu 15.10 - most likely a permissions issue

I'm trying to install Samba on Ubuntu 15.10. I've setup samba like I have on any other server but I'm having trouble with some sort of permissions issue. The share is visible but I cannot access the ...
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1answer
39 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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2answers
121 views

Installing alongside windows on raid 0

I currently have Windows 10 on 2x150gb raid 0 configuration (plus 2x1,5tb hdds with data, not raid) and want to install the latest ubuntu from dvd. If I choose the first option (to install alongside ...
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1answer
22 views

SoftRAID array not visible to apps on boot?

My / is located on a single SSD, but I also have a softraid for my apps, games, etc. Most notably, both my Steam library and my Dropbox folder are located on the raid array. Whenever I boot my ...
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9 views

Moving from two hard drives to one, plus a RAID array. Will I have problems?

I currently have a setup with two filesystems, /dev/sda and /dev/sdb, each with one partition. I boot from /dev/sda1 and have my /home on /dev/sdb1. /dev/sda is a solid state drive and /dev/sdb is a ...