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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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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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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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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9 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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16 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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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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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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9 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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20 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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22 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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10 views

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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32 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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10 views

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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32 views

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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16 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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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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57 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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170 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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111 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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38 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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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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48 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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50 views

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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34 views

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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1answer
38 views

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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89 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: ...
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87 views

Problem mounting raid 0 NTFS drives in Ubuntu server 14.04

I have 2 disks, sda and sdc with the following gdisk output: $ sudo gdisk -l /dev/sda GPT fdisk (gdisk) version 0.8.8 Partition table scan: MBR: protective BSD: not present APM: not present ...
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Booting Ubuntu 14.10 alongside Windows 8 stops working on installation of nvidia drivers

So I've built my own PC, and I'm trying to install Windows 8.1 and Ubuntu 14.10 alongside each other onto a 3 disk RAID5 array. The PC also has a fairly beefy video card (a Gigabyte Nvidia GeForce ...
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Ubuntu 14.04 Installation on acer altos G520

I got an old server and I'm trying to install Ubuntu from USB. Everything is fine till I selected Ubuntu Live or Ubuntu installation. The Display starts to switch between differnt resulution modes. ...