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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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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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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Grub error: out of disk on Ubuntu server 12.04 after power interruption [duplicate]

I've got an Ubuntu server set up that has been running happily for a year or so with no problems to speak of. It's configured in a RAID-1 to keep everything nice and backed up. Yesterday we had a ...
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109 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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827 views

How to use UUIDs in fstab for configuring btrfs RAID1

This is similar to this question, but the solution there was to choose the disks using "device=/dev/sda1,/dev/sdb1", which is not as robust as using UUIDs. I'm sure it can be done, but I can't find ...
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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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21 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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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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I can't find my HDD(hard disk)

I have installed Ubuntu removing windows 7. Now i can't find my Hard disk drive. I tried these command. sudo fdisk -l it shows me there are 3 hard disk named : dev/sda1, sda2, sda5. but when i ...
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3answers
453 views

Can I install ubuntu 14.04 on my RAIDed desktop?

I think I heard that RAID was removed from the Ubuntu installer recently. My system is currently made up of a series of RAID1 arrays: one for 12.04, with /home mounted on a separate partition/array. ...
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453 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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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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146 views

How to force update-grub to use UUID?

When I run "update-grub", the file "grub.cfg" will contain lines like this. menuentry 'Ubuntu...' { ... linux /boot/vmlinuz... root=/dev/md124 ... ... } For the line of linux, is it ...
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36 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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56 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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468 views

Ubuntu 14.04 + Dell Precision T7500 = not bootable?

Environment Ubuntu 14.04 Desktop 64-bit Dell Precision T7500 2 x Intel Xeon X5690 @ 3.46 GHz 96 GB RAM Quadro NVS 420/PCIe/SSE2 Video Card built-in SAS RAID controller Disk Configuration 2 RAID ...
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34 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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168 views

SSD is not showing up in boot loader installation device list while installing ubuntu 14.04 alongside windows

I've windows 7 installed in my SSD and trying to install ubuntu 14.04 in same SSD drive. But when I try to install ubuntu alongside windows it shows only HDD in the drive selection list. If I try to ...
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1k views

btrfs for deduplication and compression at the same time?

I'm thinking about using btrfs functions for both deduplicate and compress my storage... My question is: is it efficient? I mean, does it deduplicate AND compress at the same time efficiently?! I'm ...
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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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405 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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85 views

RAID device not detected

I create RAID10 using "mdadm --create ... --metadata=0.90 ...". There are four partitions which I name from /dev/md128 to /dev/md131. First thing strange is that mdadm automatically changes them from ...
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106 views

Raid10: how to tell which disks are in mirror?

When I do "cat /proc/mdstat", there seems no such information as to tell which disks are in mirror. % cat /proc/mdstat md126 : active raid10 sda1[0] sdd1[3] sdc1[2] sdb1[1] ... near-copies Thanks ...
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How to restruct RAID 10?

We would like to alter the partition without losing data. Here is the sketch of the plan. I am wondering if it is doable using mdadm; and if so, please kindly point some reference on how to carry out ...
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154 views

shrink ext4 partition on raid 10

My question is similar to Move ext4 partition, but the challenge I couldn't figure out is how to shrink a partition from the start. So suppose originally the partition (with raid) is like this. ...
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96 views

Automated installation of “ubuntu-12.04.1-server-amd64”

The physical server contains two HDD, and Raid1 mirror relation has been established between them as shown in attachment. In ks.cfg , the information related to partitioning as as follow: #Partition ...
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48 views

Error on choosing location while freshly installing 14.04 [closed]

I'm trying to install 14.04 on my desktop and am running into this error after going through the partitioner. Error screen: Additional information: My system has da fake raid array (Raid 0). ...
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292 views

NAS running Ubuntu / Raid 5 / SSD cache

I'm about to setup a NAS - planned hardware so far: MB: ASUS P9D WS(*link1): sry, it's german, it says th MB supports Hot-Plug in AHCI or RAID Mode, supports Intel Smart Response (SSD Caching) CPU: ...
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451 views

RAID1 “conflicting device node” message on startup

I'm dual booting Win8.1 and Ubuntu 14.04 (Gnome Classic). I have RAID1 set up (on Asus Z87-A motherboard) with Win partition, Ubuntu partition, and NTFS partition for data. On Ubuntu startup, I see ...
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RAID6 will not reassemble with 2 failed disks

Relevant photo album Hello all. I have a file server running ubuntu 12.04 (See first picture) with 6x Seagate 3TB HDDs in a RAID 6 configuration (giving 12TB of storage). This is a software RAID, ...
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Ubuntu 14.04 Manual Hard Drive Partitioning Help Needed

I'm in need of some assistance with manual partitioning from the Ubuntu 14.04 install GUI. I'm trying to do a fresh install of Ubuntu 14.04 desktop. I have a 60GB SSD as that I want all my OS files ...
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1k views

GRUB install fails on software RAID

I've been trying to install Ubuntu 14.04 on two 30GB SSDs (OCZSSD2-1AGT30G) with an ASUS motherboard (ASUS DSBF-D). I tried installing on both of the drives separately and it seemed to work fine. The ...
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GPT talbe corrupt after RAID1 setup

So I'm completely new to Ubuntu and am trying to set up a backup/media server at home. I saw the guide on Lifehacker and figured I'd give it a try. My system is an i3 3225 on an Intel DH77DF mobo ...
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btrfs two Data sections and enospc error when trying to convert

I currently have a btrfs filesystem setup like this: # btrfs fi df /storage/ Data, RAID1: total=2.33TiB, used=2.32TiB Data, RAID0: total=2.00GiB, used=2.00GiB System, RAID1: total=32.00MiB, ...
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1answer
465 views

Is it possible to pause/abort mdadm reshape?

Saturday I added a new drive to my mdadm array, and the reshape process is taking a long time. Unfortunately there's a nasty storm coming, and I'm likely going to lose power, which will probably do ...
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Failure proof logical volumes on heterogenous bunch of irreliable hard disks

Like I guess most people do, I have accumulated an assortment of various hard drives over the years. They are mostly of different size, manufacturer, speed, etc. There are too many off them to put ...
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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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1answer
739 views

Can't mount RAID after upgrade

I just upgraded my box to 14.04 and on bootup I got a message, that my RAID devices can't be mounted automatically so I chose to skip it and work through it after boot time. Now booted up, A mount -a ...
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new 12.04.4 Raid0 faulty install; malformed gui & erratic mouse

UPDATE2: #irc says 12.04.4 alternate not supported and Quadro NVS 450 not well support. Trying V14.04 now (for RAID0 & hopefully better gpu drivers)... UPDATE: reinstalled. no swap partitions. ...
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328 views

Strange output of btrfs fi df after converting from RAID0 to RAID1

I just converted my 3 disk btrfs filesystem from RAID0 to RAID1 and balanced it. At first the data was all in the RAID0 filesystem, so running btrfs filesystem df showed something like this: (XX are ...
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634 views

Does Ubuntu 14.04 support SSD TRIM on Software RAID? [duplicate]

I'm using the softwareraid (mdraid) RAID1 on 2 Intel SSD DC S3500 and I found there's a fstrim job on cron.weekly. Does it mean Ubuntu supports it? I could not find any article saying that SSD mdraid ...
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2answers
213 views

Poor SSD RAID0 write performance, alignment on raid?

We have Samsung840Pro 512gb x2 connected to the motherboard's c600 6gbps SATA3.0 ports. The RAID partitions use 100% of each disk: user@blockparty ~ $ sudo fdisk -lu /dev/sdb Disk /dev/sdb: 512.1 ...
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533 views

One SSD and two HDD. Install on SSD and RAID 0/1 or LVM for HDDs?

I would like to install Ubuntu 14.04 on my PC, but I'm uncertain on what would be the best for my setup. I have a 128GB SSD (Crucial M4) and two 500GB HDDs. Currently I'm running Windows 8 where I ...
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Ubuntu 14.04 Trusty with UEFI + Software RAID1

How to install Ubuntu on UEFI BIOS with Software RAID1? Should there be 1 partition for EFI and another partition for RAID1 (root+swap) on each drive? I wonder how it will update one EFI partition ...
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77 views

Bootstrap mdadm RAID6 server via USB flash

On my Ubuntu Server 14.04 I have large mdadm RAID6 array, and tiny boot HDD. I want to get rid of that boot HDD, and boot system from USB flash drive. Although I know it is possible to install ...
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102 views

Cannot replace missing disk in raidz

My raidz is degraded after the change of my motherboard - a disk cannot be found. The missing disk used to be /dev/sdh but now it is named /dev/sdg - which is the cause of the problem. In the ...
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246 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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202 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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mdadm warning (system unbootable) from update-initramfs, mkconf's suggested fix seems inconsistent with mdadm's description of problem

Summary: update-initramfs says system unbootable, message points to mkconf which suggests rewrite to mdadm.conf that would appear to break the RAID, system up (for now) but next reboot may kill it, ...
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Investigating RAID-related issue that caused data loss while using LiveUSB

I recently tried to install Ubuntu on one of my hard drives and something went seriously wrong, resulting in 400+ GB of data being lost. Frustrated as I was, I've decided to try to find out what ...