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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ubuntu 12.4 server is stuck on blank screen after grub [duplicate]

server 12.4 64 bit installed with raid and lvm ubuntu 12.4 server is stuck on blank screen after grub. and in grub recovery server given below error system wait for the right device ? missing ...
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update-grub fails on lvm cryptoroot

Disclaimer: I'm running this server now but I did NOT install it. I have two disks connected to an Intel Hardware Raid Controller running in RAID1. On top of it there is a fully encrypted 12.04 ...
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Can I mount two USB3 'flash' thumb-drives in a RAID configuration?

I am asking before I buy... I am getting a new Chromebook to run Ubuntu on. For storage I would like to use the two USB ports with a thumb-drive in each (I don't plan on using any other USB doodads). ...
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429 views

GRUB Bootloader not loading with Software RAID1 on Fresh 14.04 Server Install

I've looked at all of the forums, and tried doing multiple fresh installs and continue getting the error "Unable to install GRUB in /dev/mdx - This is a fatal error" My current setup is 2 2T drives, ...
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123 views

Mirror my LVM data disks - Ubuntu 14.04 Server

First of all, this is my first post, and I am very new to Ubuntu and everything Linux. My problem is this: I recently installed Ubuntu server 14.04 on my home server's 1TB drive. I also have 2x 2TB ...
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84 views

save failed software RAID array

I have a machine where the sata card failed and caused me to lose my raid array. I tested the drives externally and they are in good shape. I have moved the drives to a new machine (with enough ...
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24 views

Raid 0 with usb?

Is there a way to use two or three external hard drives to set up a Raid 0? Are Pci cards for this purpose available/dependable?
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1answer
78 views

How can I recover my RAID 5 array after removing 3 or 4 of 7 disks?

I'd like to undo what I've mistakenly done. From Disks I removed 4 of 7, 2 TB disks from the software RAID 5 array. I am unable to bootup and come to this: error: disk 'mduuid/long UUID number' ...
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188 views

Having trouble mounting a 12TB Raid on Ubuntu Server

I am running a Ubuntu server on my off of my 2008 MacPro, it runs great and works really well except I am not able to run any raid setups directly on it. I have a large library that needs to be ...
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2answers
584 views

Can I write data safely to a RAID-1 ARRAY while it is resyncing?

Will the files be in all drives on the array when the sync is complete? What if a disk fails while sync is in progress?
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1answer
99 views

Will a fresh installation of Ubuntu recognize two drives that have been in a RAID?

I have a computer with three hard drives - one is the boot drive and the other two are in RAID1. The RAID is software RAID created during the Ubuntu installation. If I reformat and reinstall Ubuntu on ...
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3answers
140 views

Serious RAID problem that panics system

System: Dual Xeon E5-2630 CPU, 32GB RAM, Primary disk is a SATA-III 512GB Crucial SSD OS: Xubuntu 14.04.1 I am having a serious problem with RAID on this new system and hope some of you can provide ...
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68 views

How to setup device mapper RAID on LVM on Ubuntu 12.04

I have read that LVM can be setup as raid without using mdadm. I have setup LVM with two physical HDD and would like to set up RAID1 but I can't find any guidance. Is there any documentation on how ...
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117 views

Breaking boot-up Raid 1 array into two independent drives

I am running Ubuntu 14.10 which boots from two identical drives configured as a Raid 1. I would like to break up the array so to keep the existing data on one drive and use the second drive to ...
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332 views

How to add software RAID-1 to an existing non-RAID system?

I couldn't find any tutorials for converting a non-RAID system (Ubuntu 14.04 in my case) into a disk-level RAID-1 system after installing a second disk (/dev/sdb) Is the following correct? sgdisk ...
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148 views

can not boot: mountall main process terminated with status 2

i installed ubuntu 14.10 server and somehow it does not want to boot anymore: mountall main process terminated with status 2 my software RAID5 /dev/md1 should be mounted to /. I can mount it RW in ...
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12 views

Degraded RAID, which isn't

Here's my issue. I rebuilded my RAID-1 Array a while ago, but after I do a reboot, it always gets degraded, saying that one of my drives aren't attached. I also noticed that if I stop and then start ...
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64 views

Unable to access a Drive

I am new to this platform so I don't Know much about Ubuntu, Now I have installed the latest Ubuntu version that is Ubuntu 14.04.1 LTS (64 bit), I already have windows 8 installed in my PC and I have ...
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69 views

Unable to uninstall/install apps do to mdadm

So I upgraded from 12.04 to 14.04 and I had a software raid 5 running. Since the upgrade my raid array seems fine? I can still access it and put files on it etc but when I run any apt-get install or ...
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99 views

Dual Boot Windows 8.1/Ubuntu on RAID/Single drive system

I have a PC over an AMD platform with the following configuration: AMD Athlon II X4 630, ASRock 990FX Extreme4, 8GB RAM, GeForce 8800GS, 2x500GB Hard disks on RAID0 configuration (1TB) with Windows ...
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84 views

RAID - Ubuntu vs. Gentoo [closed]

I'm migrating a PC working as file server from Gentoo to Ubuntu. Gentoo doesn't recognize the RAID by BIOS because apparently Gentoo connects with each and every individual hard drive directly. ...
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669 views

mount an mdadm raid 1 drive at book

I was wondering if you guys could help. I am looking to mount my mdadm RAID 1 at boot. The drive location is /dev/md127 and I would like it to mount to /media/server at boot. It is formatted to ...
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258 views

LUKS on software RAID not mounting on boot

I am trying to setup an encrypted disk using LUKS on a software RAID that was setup using mdadm on 14.04.1 LTS (GNU/Linux 3.8.13.26 armv7l) (Odroid U3). The problem is that the LUKS container is not ...
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102 views

install ubuntu12.04 on dell r710 raid 5

I have created a virtual disk 0 with raid 5 on Dell r710. This virtual disk 0 consists of 6 physical disks. Each disk comes with 1TB disk space. I used the bootable CD that I created to try to ...
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24 views

Unbuntu RAID 1 lost (md0)

I've had this setup for over a year and today I seem to have most md0 which was my data raid.. My OS raid is still working... From dmesg (both ata3.00 and ata4.00 are reporting the same [ ...
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130 views

Problems with RAID1 after 14.04.1 update, related to bad geometry: block count

I did some research but I can't quite point out how to resolve my problem. So I need to askubuntu. I setup my RAID some time ago, so I don't remember all the details, all I know is that is RAID1 and ...
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1k views

Recover data from RAID1 array (My Book Live Duo)

I have a WD My Book Live Duo device which I used as a network drive with a RAID1 configuration. The device, which was working flawlessly for almost 2 years suddenly stopped working, that is; it was ...
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36 views

2nd and 3rd disks mirrored for backup on Ubuntu Desktop

I wish to set up a small home server providing NAS and Web server functionality to my home network. I'd like to be able to store family pictures and other things I'd want backed up. So I had ...
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179 views

mdadm doesn't seem right

I watched a youtube video where a guy made a raid 1 with 2x 2 gb usb drives. I am using 2 x 3tb disks to have a raid 1 mirror. My concern is my sdb1 size=-1364702208K sdd1 size=-1364702208K. which is ...
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64 views

on fakeraid, could not mount / at boot, then boots to purple screen

I'm running Ubuntu 14.04 beside Windows 8 on an Asus UX51VZ-XB71 which comes with two SSDs configured in a fake raid-0. I can install 14.04 successfully by booting into the live usb, assembling my ...
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591 views

Install Adaptec RAID 6405 on Ubuntu 12.04 (3.13.0-37-generic)

I'm trying to install an Adaptec RAID controller on Ubuntu 12.04. So far, I've downloaded different versions of the driver, but executing the specified commands yields some errors. sudo dpkg -i ...
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111 views

unable to install ubuntu on sata hard disk

I would like to install lubuntu in my old pc. I have a pci sata/raid from Syba sa3114 which connect 3 sata hard disk 1TB When I install and create the partition, I recive the following message: The ...
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424 views

mhddfs constantly disconnecting (“Transport endpoint is not connected”)

I'm using mhddfs in conjunction with SnapRAID and it has started disconnecting the fuse drive at least once a day. I know I can unmount/remount for a quick fix, but I'm implementing this in a media ...
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35 views

Mainboard RAID or something else?

I am trying to install Ubuntu Server on my new machine. I configured RAID through the BIOS prior to installing the OS. I set it up for RAID-1. When I go through the install process the installer ...
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27 views

users and shares on external partition

I have tried my upmost to get this working and have lost the will to live but am not going to give up! Basically, I have 1 SSD which I have just installed Ubuntu 14.4.01 on fresh and I have created a ...
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117 views

Configuring RAID in HP Proliant ML350e Gen8

We have purchased two stock HP ML350e Gen8 servers. Ubuntu 12.04 is to be installed in those. The stock base unit have provision for 6 hard disks for creating RAID in which, one is filled with 500GB ...
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80 views

Slow startup with raid0 ssd… Bootchart

My laptop is an HP Elitebook with an RAID0 Samsung 840 evo (2x120GB) Array Windows loads fast, but ubuntu boot time is extremely slow - 02:49 minutes!! (also, the screen flickers weirdly as it shows ...
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162 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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78 views

How can I ensure simple way RAID 1 is working?

I have formatted 2 large hdds and connected them to RAID with commands: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1 mkfs.ext4 /dev/md0 mkdir /mnt/data mount /dev/md0 ...
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74 views

Booting from raid

I've installed ubuntu server 14.04 on a small rack server. It has two disks 500GB each, which I put in a "special" raid mode called recovery, so it's kind of like a mirror. When installing ubuntu ...
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116 views

raid mdadm “active,resync” after reboot

I created a raid1 (Intel RST + Ubuntu Server 64Bit). I waited until the mdadm status of the raid changed to "clean". All worked fine. But I noticed that after every reboot, mdadm shows "active,resync ...
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How to fix RAID1 array by mdadm with script?

In system works two RAID1-arrays madadm. There is one reserve disk to change faulty disk. I need to write a script which will be monitoring disks and automatically fix degraded array. How do you ...
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542 views

mdadm raid1 boot error

I created a RAID with Intel-Rapid-Storage(RST) - containing 2 3TB HDDs. Then I installed Ubuntu Server 14.04.1 64Bit. Everything worked fine and then I did a reboot. Then I got the following error ...
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387 views

Move RAID 1 Array to new system

I am rebuilding my Ubuntu home server, but I want to preserve my two disks currently in Linux software RAID 1. My current config is: One 240GB HDD configured as OS Disk (Ubuntu 12.04 LTS) Two 3TB WD ...
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98 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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1k views

MDADM RAID1 Home Server System disk error: incrementally starting raid arrays mdadm: Create user root not found

I'm not sure what else to check. Everything below looks sane to me but the system hangs on boot. This is a home server with four disks crammed into a Dell OP620. Each pair of disks are assembled as ...
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99 views

USB 3.0 ExternalEnclosure Unmounts at random

Title says it all. I noticed the drive was unmounted, so I got to looking through dmesg and found: [31080.516164] usb 4-3: USB disconnect, device number 3 [31080.760493] usb 4-3: new SuperSpeed USB ...
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172 views

OS - Does not Show 100% HDD Capacity

I am from Dell Technical Support -- One of our customers has a Dell System Model T5610 and has installed 2-256GB SSD HDD and 2- 4TB HDD and Configured RAID-0 of 2 Arrays on Intel Based Chipset ...
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173 views

Boot repair on raid after crashed system-upgrade

I found it difficult to find an answer to this problem without specific step by step advice. During an Ubuntu system update an error occurred and it froze my PC. After a forced shutdown I encountered ...
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161 views

Ubuntu 14.04.1 install on Areca ARC-1883i - kernel detects partitions, installer sees no disks

I have a strange one here - when installing the kernel load detects my RAID controller and looking in the F4 debug screen, I can see it also detects the two volumes there. When I come to the part in ...