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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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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59 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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67 views

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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27 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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291 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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29 views

Why do I see permanent disk activity on my software raid partition (/home)

I installed Ubutu 14.04 server with this partitioning: / on an SSD /var and swap on a single SATA drive /home on a software raid1 consisting of 2 SATA drives. I switched all partitions to noatime. ...
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40 views

My VirtualBox VMs Virtual Disk Folder are missing after reboot

I using VirtualBox in Ubuntu 12.04 64 bit and yesterday one of my windows guest got bluescreen so swithed off my guest. After restart it won't start, when I saw the guest virtual disk file and folder ...
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164 views

How to make Intel fake RAID 0 volume appear on boot with Ubuntu 14.04 in a multi-boot environment?

I have a computer with a Gigabyte GA-Z97N-Gaming 5 mainboard, a 256 GB drive for booting and two 3 TB drives meant to use in a RAID 0 setup with both ext4 and NTFS partitions. We are planning running ...
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data distribution after adding additional disk in raid 5

"I had set up raid 5 by equal capacity with 3 hard disks in ubuntu 12.04 and I need to perform scaling.After adding 1 disk,how to monitor the data distribution and possible inputs.Is it possible?"
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24 views

Dual boot ubuntu with raid configuration

I have a pc currently running on windows 7 with following specifications: Intel Core i7 CPU 930 @ 2.80 GHz Installed memory RAM: 6 Gb When configured it was RAID and showing 2 partitions, But when I ...
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44 views

Basic question about RAID/FlexRAID

I have an Ubuntu Server install (14.04.01) that I have been using for about 1 year. Its mostly used as a Samba and Plex server running off one 3TB hard drive. I purchased two more drives with the ...
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69 views

Fresh install of 14.04 server edition doesn't boot

I've installed ubuntu 14.04 server, but on power-up I get the error message "Reboot and Select proper Boot device", even though I've set boot priorities correctly. The server is going to be a NAS. It ...
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55 views

Create a RAID5 on my Ubuntu Server 12.04

I have an operational Ubuntu Server 12.04 with only one HD (1Tb). I need more capacity and stability, so I bought last week 3 HD(1Tb each) to make a RAID5 and migrate the information of the old HD to ...
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63 views

Extra RAID array keeping disks busy

I have a software RAID-5 with 5 disks (Seagate ST31500341AS). SMART was saying that one was at risk of IMMINENT FAILURE. I replaced it with a new disk, also a 1500GB Seagate. The array wouldn't start ...
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66 views

Ubuntu 14.04 Server with RAID 1 and Windows 7 for file backup

I have an Ubuntu 14.04 Server with RAID 1 with 250GB (2 x 250GB). And, on my notebook, I have Windows 7. Ubuntu Server shows up on my notebook but won't copy/move any of my files that I want to ...
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120 views

Degraded mdadm RAID5 array & ARRAY UUIDs mismatch (Ubuntu 14.04.1)

Every reboot on my server results in a halt due to a degraded RAID5 (software) array. The same drive /dev/sdc appears to be dropping out each time. I ignore and boot with a degraded array any ways. ...
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68 views

Help fdisk 4 (near) identical 1TB drives

I have 4 drives to setup a Raid 5, but apparently they are not identical. I am not sure what steps to take next. It seems that I have (3) 512 and (1) 4096 sized drives. What should I do to format, ...
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35 views

I lost my raid…(it won't load)

After plugging in an extra drive I lost my raid drives. In the drives GUI it shows all of the raid drives as connected but when I go to start the raid it says: /dev/md/Storage assembled from 1 ...
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62 views

format/build raid 5 with one 4k drive, three 512b

I have 4 WD 1TB drives which I want to 4x1TB Raid5. I am not sure what course of action to take next. How do I configure my 4th drive (sde) to align with the rest? Will this affect performance? I ...
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27 views

Installation with FakeRaid

I have a problem while installing Ubuntu on my laptop. Actually, Windows 8 is installed with a raid0 managed by the Intel Rapid Storage Technology. At first, I tried to install without delete this ...
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46 views

Installing Ubuntu 14 Server x64 on Intel Array 1 system

I have a server with Intel i7 technology. It comes with 2 hdd (2tby each) and I configured (using bios) as RAID1 (mirroring) When I started Ubuntu Server installation, it recognizes the array, asked ...
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85 views

Make Win7 Bootable After Ubuntu/Kubuntu Install

I had a Win7 install on a raid array (sda...) and added a second drive (sdf) for installing Linux. Installed Ubuntu initially using a Grub boot loader (no problem, Win7 still bootable), but then ...
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9 views

How to select the number of mirrors in a raid10 with mdadm

i know ho to create a raid10 with mdadm but i don't know what is the parameter for select the number of copies. I have 6 hard drives. Using the default values it will make only a copy of 3 hard ...
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17 views

Ubuntu instalalion Fail Fuel deployment on Dell 1950

I am trying to use Mirantis Fuel to deploy OpenStack and encounter problem with Ubuntu installation, I am using Dell 1950 with no RAID set so the system detect 3 attached disk, upon finishing ...
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147 views

How to preload driver before Ubuntu 14.04 installation?

I have a Raid card: LSI 9311-8i. I want to install OS on RaidCard, but original Ubuntu 14.04 does not include mpt3sas driver, so it cannot detect the raid volume. How to make Ubuntu detect the volume? ...
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85 views

RAID 0 Superblock recovery?

Cool, I have a Synology Diskstation 212j, with 2x3TB drives in RAID 0 (I know, I know, I was very naive; never had a drive failure before). About a month back the volume crashed, I recovered the ...
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110 views

64 Bit Xubuntu on Full Software Raid 0 Using Mini.Iso

What I am asking is doable but the thing is I forgot how to do it since the last time I did. I recently upgraded my Ram to 8Gb from 2Gb. I am using an Asus Maximus Extreme with an intel core 2 duo ...
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115 views

Ubuntu 12.04 - Reinstall Grub on a Raid-1 via LiveCD

I had a hardware issue which caused my Ubuntu Server to fail. After the problem has been resolved I still cannot boot into my Ubuntu installation, but fall into initramfs instead. To me it seems that ...
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21 views

Can't alternate users, need to logoff to login other on ubuntu

I installed from scratch the Ubuntu 14.04 and configured it with a Samba share. There is a windows share RAID 1 drive (2 x 1 TB) with Mdadm, that Dropbox and more 2 backup solutions access (Acronis ...
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620 views

mountall: fsck /boot [333] terminated with status 1

I am running a Ubuntu Precise 12.04.4 LTS vm on an ESXi. Suddenly, the boot up process started crashing with the following message: /dev/mapper/luxsrv--vg-boot: 251/249856 files (6.4% ...
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26 views

booting from USB with Raid

I am trying to install the latest version of ubuntu on a dell precision t3500. but when I boot to usb stick. I get an error that says busybox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) build-in shell (ash) ...
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28 views

Fully recovering HDDs after using of RAID controller

I've been using Ubuntu for a year. But today happened something awful to me. I bought four-core AMD computer to do some virtuals there. But, I had wanted to reduce the risk and found motherboard RAID ...
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157 views

Dual-Boot Ubuntu and Windows 8 w/ SSD in Raid 0 won't install bootloader (Asus UX301)

I have been trying to install Ubuntu on my brand new Asus UX301 to no avail no matter what I try. I am always not able to install the bootloader on any partition. This does not matter whether I boot ...
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84 views

RAID 0 recovery from lacie NAS

I am in desperate need of some assistance by the more experienced users out there! I am trying to rebuild a RAID0 that is composed of two 2TB Hard drives. These come out of a LaCie Ethernet BigDisk ...
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66 views

Adding another HDD to Mirror the existing Hard Drive

My current setup is that I have a 160GB HDD as the primary where I have installed Ubuntu Server 12.04 LTS. I have a additional HDD (2TB) where I store my Files. I want to be able to use the software ...
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101 views

Installation on to a HP DL120 G7 hardware RAID not detected

Can anyone guide me to get Ubuntu server 14.04LTS installed on my servers hardware RAID. I have got the raid set up as raid1 using 2 1Tb disks, but when I go to install the OS I get the choice to ...
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95 views

Stuck setting up RAID 1

I've tried switching to linux many times before and each time came up to a problem and ended up giving up. This time I hope things are different. I have a home server: P8Z77, 1xSSD (with Ubuntu 14.04 ...
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22 views

Add disk and use software raid

I have a lvm partition on a disk, and another, identical drive with no data on it. Would it be possible to set up these two drives in RAID 1 using mdadm, with the same lvm data on top? Perhaps by ...
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20 views

Make RAID on one harddrive, but many partitions?

I have been reading a lot about raids and I want to get my hands dirty. The goal: Virtualize a copy of ubuntu and play around with raid. This means that there won't be more than one HD, hell the OS ...
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21 views

Raid: how to address the error on “--remove”?

I first stop the raid array, % mdadm --stop /dev/md127 mdadm: stopped /dev/md127 then do a check, % mdadm --detail --scan ... the array is no longer shown. then I do remove % mdadm --remove ...
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31 views

RAID10: why resync takes huge amound of time?

After setting up RAID10 and installing Ubuntu, I reboot then check /proc/mdstat. It shows [>...] resync = 2% finish=29702.5min speed=1030K/sec". That is about 500 hours or 20 more days. Is ...
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34 views

How to rebuild mdraid metadata?

I somehow hot swapping a failed hard drive on Ubuntu 14.04 LTS Server running mdraid RAID1 array without marking the failed drive to fail and remove it via mdadm. I successfully add another drive on ...
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54 views

What version of MegaCli should I download for H710p?

I am using Dell Perc H710p adapter. When trying to download MegaCli from LSI, someone suggested to check the parameter like. % lspci -v | grep LSI When I run this command, I got. 03:00.0 RAID bus ...
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33 views

Ubuntu server installation - partition can't finalize

I need help on ubuntu server installation. Just can't pass the partition section. I have 3 hdd 2 with raid 0 from bios and 1 for the operating system. in my previous kubuntu setup , home directory ...
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30 views

Problems booting windows and ubuntu

I just installed Ubuntu on a Windows 7 machine and Windows will not boot. A few notes: This computer is connected to RAID and another HD. I installed ubuntu on the nonraid drive and windows is on the ...
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316 views

Failed to install GRUB on a separate '/boot' partition on a fake RAID 0 (12.04LTS)

I'm having some problems getting GRUB configured for Ubuntu 12.04LTS on a fake RAID 0. I can either get the GRUB rescue prompt at startup, or just a GRUB prompt but I cannot boot to Ubuntu manually. ...
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29 views

Upgrading and recovery options with software raid 1

I recently installed Xubuntu on a spare machine that is serving as a NAS, voice communication, and hosting various other services. I have a 120GB SSD containing the OS and 2 4TB drives configured as ...
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215 views

Installing and booting Lubuntu on ReadyNAS with Btrfs

I have NetGear ReadyNAS Business Pro with 6 Place for 6 Disks I did a hack the box (basically it is a normal PC with Intel CPU) I upgraded the CPU and I used the ReadyNAS OS 6 (which is Debian ...
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180 views

How to configure and run mdadm RAID with /boot and /boot/efi

I am finally getting around to setting up RAID on my existing Ubuntu 12.04 box. This is my first time with mdadm and I have read several tutorials and I believe I have the basics of the RAID part ...
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389 views

btrFS RAID5/6 Understanding space usage and usability

Im currently thinking about experimenting with btrfs with my workload in place of ext4. Right now I have a few drives on order. I want to setup btrfs on the first drive and slowly expand the FS ...