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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How do I move several LVM PV's on a pair of software RAID5 arrays from one Ubuntu install to another?

I have two RAID5 arrays with LVM sat on top. I'm moving from Ubuntu 10.04 on an old PATA drive to Ubuntu 14.04 on a new SATA drive. I have the basic system up and running but now I'd like to move my ...
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How can I find the exact model of a hard disk in a raid?

I have a ProLiant DL380p Gen8 with 4 Plextor solid state drives RAIDed. Since one of these disks has failed (as I see in HP iLO4 of my server) I need to find the exact model of these disks to replace ...
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14 views

How to check file-level write performance?

In a very similar question, the accepted answer suggests to do: dd if=/dev/zero of=/tmp/output bs=8k count=10k; to measure the write speed of a hard disk. My tests were inconclusive. I have an ...
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Problem with installation trying to find strange disk

When I use synaptic to install anything (in this case k4dirstat) I always get cascading errors. They start at: run-parts: executing /etc/kernel/postinst.d/zz-runlilo 3.11.0-19-generic ...
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242 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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How to install Ubuntu server with UEFI and RAID1 + LVM

I used to install my servers with LVM over software RAID1, and grub install on the MBR of both drives. Now I have an UEFI server, and the compatibility (BIOS) mode does not seem to work. So I went ...
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40 views

/dev/disk/by-uuid/XXXXX does not exist dropping to a shell

I have just installed ubuntu 14.04 and when I reboot and remove the media I get the Gave up waiting for root device. Common problems: -Boot args (cat /proc/cmdline) -check rootdelay= (did the ...
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44 views

Optiplex 740 E - Unbuntu 14.10 - raid install problems

I am trying to install ubuntu 14.10 onto dual 160gb drives setup in raid by the motherboard of my optiplex. I get through the install, but when after I get the a-ok that the install went well and then ...
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41 views

Official Installation Documentation?

Is there an 'Official Ubuntu Linux Documentation' Page on the topic of (How to correctly go about) Manually Partitioning for an UEFI install of Ubuntu 14.04 LTS (and later) During the “Something Else” ...
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23 views

Do I likely have a bad WD Red HDD? [duplicate]

upon install of a new WD Red HDD in my server I reboot and get the Ubuntu 14.04 loading screen of An error occurred while mounting /home. Brief description: Btrfs Raid 1 filesystem 4 existing disks ...
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36 views

Dual-booting Ubuntu on Raid system with UEFI Windows 10

Details of Raid: Type: Hardware RAID 0 (Stripe) Member Hard Drives: 1) SSD 70GB 2) HDD 160GB 3) HDD 250GB Size: 180GB I see.... However I made this specific setup because as you can see I had ...
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2answers
5k 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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1answer
31 views

Restoring Windows [duplicate]

I have been trying to get Ubuntu to work on my laptop for the last few days. I have been extremely unsuccessful in doing so. All I want to do at this point is to get Windows back. I have an exact ...
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18 views

Re-install 14.04 and keep raid and lvm setup and data

I upgraded my 10.04 server to 12.04 and then immediately to 14.04. I had installed gnome in part to get graphic support for Boinc. 14.04 does not support my Nvidia Quadro NVS 285 video adapter, or ...
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46 views

I am unable to mount my previous btrfs RAID 1 home directory on reinstall of Ubuntu server 14.04 (was using 14.10)

Update 2 I mounted as degraded to /home and something interesting happened: jake@DAVYJONES:~$ sudo mount -o degraded /dev/sdb1 /home jake@DAVYJONES:~$ sudo btrfs fi show Label: Home uuid: ...
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4k views

Windows 7 is not shown in GRUB menu after 13.04 install

I installed Ubuntu 13.04 on a secondary hard drive, which has succeeded. But there is no GRUB entry for Windows 7 as an option. Boot-Repair and update-grub did not appear to help. ...
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4k views

XFS File System Fails - Can't read Superblock

After this (Iomega Home Media disk corruption - data recovery help asked) problem solved... i have a new one.. I'm trying to understand why my Iomega Home Media Stopped working, and need for that to ...
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4k views

How to re-add accidentally removed hard drive in RAID5

I have a NAS on Ubuntu Server with 4 2TB hard drives in RAID 5. A couple of weeks ago, one of the hard drives died, but my RAID was working, although degraded. Luckily it was still under warranty and ...
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MDADM: 3-drive RAID5 won't assemble (event count off by 2)

I just upgraded from 12.04 LTS to 14.04 LTS and when i tried to fire up my RAID it will not assemble... even using --force won't help, which is odd because yes the event counts are off but only by ...
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21 views

Installation on 3 HD setup: mdadm is missing

I have an SSD (sda) and 2 HDs (sdb,sdc). My target is to install Ubuntu on the SSD and setup a RAID0 over the 2 HD. I manually installed mdadm and created the md0 device and created also the ...
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Dual-Boot Ubuntu 14.04 and Windows 7 on FakeRAID Installation error - question marks “????…”

I am trying to install Ubuntu 14.04 on FakeRAID along Win7. Win 7 has been already installed, and dmraid is running. During the installation I choose to manually partition, this is the structure: ...
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61 views

Setup FakeRaid Raid1 for data only for Ubuntu 14.10 and Windows 7

I want to create a FakeRaid RAID1 array of two hdd's that are being used only for data, no OS's on them. My OS's are Ubuntu 14.10 and Windows 7 which are each on seperate hdd's. Almost all of the ...
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53 views

No disk space left on root, Ubutntu 12.04

When I restarted my computer, which is running ubuntu 12.04, I got a message that there was 0 disk space left on /. The output of df is as follows: $ df -h Filesystem Size Used Avail Use% ...
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Need help installing on raid 0 [duplicate]

I hope you al are doing fine. I have always wanted to use ubuntu as my main os but has always failed to install it on my fake raid 0. I have been using ubuntu via a virtual machine when it should be ...
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82 views

Trying to access/mount raid array with gpt partition table

My raid arrays seem to be giving me alot of hassle under linux. I have 2 RAID 0 arrays: - 2 x 120GB SSD with MBR partition table (windows 7 x64) - 2 x 3TB HDD with GPT partition table (data/storage) ...
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1answer
3k views

Ubuntu 13.10 software raid

I had already Ubuntu OS installed on my desktop PC, where the software RAID 5 is configured ( 3 partitions /, swap and home ). This system was upgraded from the 11.04 till 13.04, it was quite messy, ...
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1k views

Recovery Data from failed Raid Disk - NAS

My Western Digital My World Book White Light NAS Drive stopped working. This has a single 1TB Disk. At first I started getting the following error: Volume Status - Volume 'DataVolume' doesn't exist ...
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35 views

Mdadm Raid 5 Array with 2 Failed Drives

My setup is as follows /dev/sdb/ /dev/sdc/ /dev/sdd/ /dev/sdf/ I have the following 4 1.5TB drives in a mdadm raid 5 array. One of the disks (sdb) died on me leading the array to start up running ...
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3answers
3k views

Add new hard drive to mirror existing LVM drive with raid1

I have a 320GB hard drive with an LVM2 volume group that was created as part of the default installation. If I put a second 320GB hard drive into the computer, can I make the second drive mirror the ...
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43 views

Rebuild Windows RAID 0 for permanent use in Ubuntu 14.04

My old PC (Core i7 920, Asus P6T-SE, 6GB RAM) recently suffered a motherboard hardware fault. The 2TB RAID 0 array containing the Windows installation and mostly media library was no longer ...
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1answer
89 views

How do I properly access Windows software RAID 0?

I am a new Ubuntu user with a fresh installation, and am eager to get started with it. However, all of my important data is on Windows software RAID 0 array, and I need it to stay there as I'm also ...
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40 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
22 views

Iomega Home Media Network Drive deleted partition

I was trying to mount the IOMEGA HMNHDCE under my UBUNTU machine, in order to copy data en proceed with installing a new linux version. http://iomega.nas-central.org/wiki/Category:Home_Media_CE It ...
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84 views

Ubuntu 14.10 LSI 9240-8i driver installation

I'm quite new to Linux and just got my LSI 9240-8i I'm running ubuntu on a normal SSD on the Mobo sata port. i've downloaded the drivers for ubuntu from here: ...
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3answers
3k views

Why isn't md raid assembled after reboot?

I'm trying to get an Intel RAID setup. The problem I have is that after a reboot the raid is not available. These are the steps I go through to setup the Intel RAID using the mdadm command. I've ...
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2answers
81 views

Best way to achieve data redundancy and different sized hard disks

I have a 2TB and a 1.5 TB hard drive. My ultimate goal is that I have a partition of 1.5 TB which is mirrored to both disks, so that I won't lose data if one hard disk crashes. Of course I'd like to ...
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4k 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
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if using ubuntu raid sofware and os fail what happen to data?

if i setup a server with raid using ubuntu server software, what happen to data if os (ubuntu server) fail Raid 10 : disk 1 disk 2 disk 3 disk 4 disk 5 disk 6 to 2 partition os data
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something went wrong with raid 6

hi all first time poster, i have recently st up a 15 drive software raid 6, before any data could be copied to the device i stuffed up my ubuntu install, so i reinstalled ubuntu and it attempted to ...
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1answer
56 views

RAID in Ubuntu 14.04.1

I'v been red about how to create RAID partitions during installations but it seems to need "alternative installation CD". Unfortunately, there is no download link for alternative ubuntu 14.04. Why? Is ...
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1answer
24 views

How to report a bug to the installer?

I'm trying to install Ubuntu server on an old Mac workstation with EFI firmware, and I'm trying to use software raid for the root partition. The installation aborts during package installation(maybe ...
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3answers
72 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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1answer
82 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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12 views

mdadm reports "

I'm running a software raid1 array with two 32GB USB 3.0 sticks holding my 14.04 LTS server. Querying the array returns the following: root@microserver:/home/leuser# cat /proc/mdstat Personalities : ...
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1k views

2 TB Hard Drives and RAID 5 in home server

I recently converted my home media server from Windows Server 2008 to Ubuntu 11.10. Right now, there is a single WD20EARS 2 TB hard drive formatted as NTFS that's about to run out of space. I'd like ...
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1answer
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File recovery data copy

This is my first time using Ubuntu, and I'm using it to recover data from the drives of my dead READYNAS. The commands used to access/mount the RAID were obtained from here: ...
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1answer
43 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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2answers
61 views

Ubuntu OS on SSD and RAID-5 for data files

I want my NAS to run a lot like Freenas or Nas4free in that I have a separate drive for my OS and all other files (like WWW, media, plex media server and minecraft) run off the raid-5 (3*3tb WD reds). ...
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1answer
54 views

raid10: can't read superblock

Up until a few minutes ago I had a functioning raid 10 device (/dev/md0) consisting of 4 x 3TB disks. My operating system (headless ubuntu server 14.04.1 lts) is mounted on a 120GB SSD seperate from ...
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135 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, ...