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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Lenovo ThinkServer Ubuntu 12 Server Install: Partition Issues

During the Ubuntu 12 install, I get the a screen that says "ATA RAID Device Detected" and asks if I want to enable it. Having used Lenovo Easy Setup to configure the raid (1 array with 2 1tb drives) I ...
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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 separately....
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Improving virtual Ubuntu hdd performance running on Windows host

I have a Windows 2008 R2 server with: 1 x 80GB SCSI, partitioned: 100MB reserved 79GB NTFS windows 2 x 1TB SCSI HDD running in a hardware RAID 0 striped configuration, partitioned: 7GB RAW (left ...
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Will Ubuntu spin down harddrives in an RAID 10 array?

I'm about to buy parts for a new home server and I'm planning on using Ubuntu(perhaps 12.04 LTS) For the OS, I'll use an SSD. For cold storage(big files, rarely accessed), I'm planning on setting up ...
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How to set up SSD raid and TRIM support?

I am looking to set up a new server. I can only use Intel 520 Series 240gb MLC ssds or standard Seagate 7200rpm disks. These are the non negotiable options. Naturally, as this is going to be running ...
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Recover failed RAID1 software Partition / missing partition table or superblock

i already read & tried different approaches for 2 days now but nothing seems to work. I have 2 HDDs, on each one is an partition with 200GB which i had in RAID1. Then i installed XBMC and tried to ...
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Installing 12.04LTS Server on a Fake RAID10

Scenario Install Ubuntu 12.04LTS Server on a RAID10 with boot on a RAID1. 4 - 2Tb SATA Hard Drives 3 Partitions (/boot, /, and swap) boot (256Mb from each disk) setup in RAID1 /dev/md0 partition ...
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Can't Install/Boot Ubuntu

I am getting the error: ata[462]: HDIO_GET_IDENTITY failed for '/dev/sdh': Invalid Argument I used the x64 Ubuntu 12.10 download burned to a DVD. I cannot boot from the DVD. I am using: ...
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Activate spare for RAID-5 in Disk Utility

I have a RAID-5. I'm trying to replace a failing drive in Disk Utility GUI. I added a new drive as a spare, then did "Remove Component" for the failing drive. How do I tell it to actually use the ...
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Formatting aand setting up Raid on a secondary and tertiary drive

I am a Ubuntu Server newbie and an amateur, more like a newbie, with Ubuntu Desktop. So FYI... Sorry for any potential redundancy, but most of the formation I have found is to setup RAID on a fresh ...
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Ubuntu 12.10. Can't format root partition at installation time

I'm trying to install Ubuntu 12.10 on a Supermicro storage server and have an issue. I am using alternate (text-based) installation cd image and when I get to the Detect disks section it says there ...
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Diagnose complete hang of Ubuntu 12.04.1 Server when starting an I/O intense operation?

At the moment I am trying to migrate data from a software RAID5 (6 disks) over to a software RAID1. The command of choice was: rsync -avxHACPX /mnt/old/ /mnt/new/ However, after the first few files ...
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Restoring RAID after linux installation

After Years using windows and wishing to enter the linux world, I recently installed Ubuntu 12.04. I have a Dell vostro 3460 with: 500 GB HDD 32 GB SSD mSATA (cache - not physical drive) My ...
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Does the native RAID in Ubuntu support RAID configurations with hard drives of different sizes?

have 8 hard drives of different sizes that I want in a RAID 5 or 6 configuration, the OS is Ubuntu 12.04 desktop. Does the native RAID in Ubuntu support RAID configurations with hard drives of ...
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686 views

Alternate Installing Ubuntu 12.04 on new Vaio svz (RAID0)

I am attempting to install Ubuntu 12.04 LTS 64-bit on my brand new Vaio SVZ laptop. I am using alternate installer, since the machine has a RAID0 SSD (fake raid?). After activating ATA RAID, ...
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489 views

RAID (mdadm) - Flags necessary?

As I understand it, it's best practice to set the drive flags as "raid" before adding them to a mdadm raid array. Okay fine, but I also heard people say that they didn't do this and mdadm worked fine. ...
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Can I cache an mdadm raid with an ssd?

I have a 1TB array set up in raid 1 using mdadm on Ubuntu 8, to store mission-critical files. I'd like to speed up read/write, especially for large files by caching to an SSD. Is this possible? Does ...
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RAID (mdadm) - What happens if drives are mismatched in size?

Question 1 - Before you answer with "it just takes the smaller disk", hear me out quick. My 3TB WD Reds come out to be 3001 GB in size. Let's say I set up a mirror via mdadm for sdb1 and sdc1 which ...
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RAID (mdadm) - File system relevant prior to building the array?

In the event I want to set up a RAID 1 mirror utilizing mdadm, is it needed to have a file system on the drives first? Reason I ask is my desktop which has RAID 1 (built from the alternate install CD) ...
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270 views

Hardware RAID1 device is the wrong size/too small?

My motherboard has an Intel RAID controller. I set up 2x3TB HDD in RAID1 named "Home". This should make a single device that is about 3TB. This is what I end up with: # fdisk -l Disk /dev/sda: 240.1 ...
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CineRAID CR-H458

Has anyone used this external RAID enclosure? I would like to know if it is a true hardware controller meaning Ubuntu would have no problem recognizing the array as one drive. Thanks for any help!
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Software raid - mdadm - re-find my array

Description Today I plugged in another hard drive and unplugged my raid drives to ensure when I wiped the drive, I would not accidentally pick the wrong drives. Now that I have re-plugged in my ...
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Should swap and RAID-1 mix?

I have a box with a small RAID-1 array being used for swap space. I only did this since I was setting up mirrors for every other partition in the system. Today I read this question and it prompted ...
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How to change the default location of /home/.encryptfs

Situation: I have a 2 large HDs setup in RAID 0 config and mounted in /raid (redundancy) I moved my /home to /raid/home. I hacked around configs to ensure that Ubuntu understands that I want my /...
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How to migrate from RAIDZ1 to RAIDZ2 using ZFS-native? [closed]

Last night I created a raidz1 array, however later in the evening I realised I needed to create a raidz2 (RAID5), is it possible to change the raid level of my array from raidz1 to raidz2 without ...
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How can I solve my RAID installation problems?

Trying to install Ubuntu Server 12.10 64-bit (also tried 12.04.1 64-bit LTS) with a RAID5 array but machine does not boot grub (I get the black screen with the blinking cursor), and I have tried ...
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How to choose LVM mapping mode when installing Ubuntu server 12.04?

I would like to create a volume group with striped mode on top of 2 RAID-1 devices. The issue here is I cannot choose striped when configuring LVM at installation stage. It's always be linear.
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RAID 0, new drive mirroring issues

Here's the run down: We have a 2 disk RAID 0 array. One of the drives failed and the other is marked as depreciating. We aquired a new drive, same specs as the old. To our thinking we simply replaced ...
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Fixing broken raid0 with dmraid?

A while ago when I was still on Windows I had two secondary 1 TB hard drives that used a raid0 setup, fakeraid I believe with Intel. My primary hard drive died which seemed to have messed up the raid ...
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Would Mdadm be faster than fake raid adapter?

I just bought myself 2 x 3tb wd red drives and a startech 4 port raid card . Unfortunately, I have a very, very strong suspicion that this is a 'fake-raid' card as it is not from any of the main ...
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2x SSD like one drive 12.10

I want to do a clean install of ubuntu 12.10. I got 2x 40GB SSD's. I want to have them like one drive. (like RAID0), is there a way to do this with LVM, in the graphical Ubuntu 12.10 installation? I ...
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How to setup a RAID Install with Ubuntu 12.04 LTS?

I have one pc that has two 120GB hard drives in it. There is currently no operating system installed in my PC. I want to install Ubuntu so it will see and use both hard drives for booting and storage ...
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Why is ext4's Journaling I/O usage so high when copying files to my RAID1?

This just barely started occurring and I feel like this is not a bug but a configuration error (hopefully). I'm on 12.04, 64-bit and have been happily stable for many months. My RAID1 is years old and ...
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Problem installing GRUB with dual boot Win7 on RAID

I use Linux at work and am pretty happy setting up and installing to new machines in several configurations, however I have to admit, this time I'm stumped! I have a nice new PC with an SSD Raid in ...
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How to make GRUB2 detect and boot Ubuntu on a RAID 1?

grub 2 is unable to detect /dev/md1 which is a raid 1 drive on my computer. When I press c in grub menu and run ls I get a list of all the drives but don't see md1 for booting Ubuntu which is on ...
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Copy entire filesystem in a folder where a raid-1 array is mounted

I am trying to migrate from a single disk drive system to a double disk drive software raid-1 system that already has a running system on it. Meaning that formatting and having a new installation of ...
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Ubuntu 12.04 LTS installer support for fake RAID 1

I want to install Ubuntu 12.04 LTS alongside Windows 7. Should not be a big problem, but it just occurred to me that I am using a software RAID to mirror my disks (RAID 1). Now there is some ...
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How do I mount disks with an Adaptec RAID controller on a dual-boot machine? (error code 12)

I'm trying to migrate from Windows to Ubuntu 12.04, dual-booting at the moment. One problem I am facing is the RAID controller, I'm not able to mount any of the drives connected to it. (The OS is up ...
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New computer, same RAID. MDADM won't assemble

Ubuntu 12.04 64. Hardware failure (motherboard) led me to build a new machine, and I took the opportunity to do a fresh install of Ubuntu (first one was a learning experience). I moved the raid disks ...
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SSH Commandline - Ubuntu x64 dedicated server raid-0 array creation LOG [ After reboot : Disk /dev/md127 doesn't contain a valid partition table ]

I followed this tutorial but failed as it seems, i tried for a couple times, here i throw the towel: ht-tp://www.rustyrazorblade.com/2012/07/setting-up-raid0-in-ubuntu-12-04-in-aws-high-io/ The ...
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Building and migrating to software raid 5 array

I am hoping to build and migrate to a software raid 5 array. I am working with ubuntu 12.04.1 LTS 64-bit. I currently have three drives: /dev/sda1 which is a 60G solid state drive which contains ...
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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 0
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RAID 5 reassemble stating wrong homehost?

So I went from a degraded RAID, to a dissasembled RAID, to now trying to reassemble it. Im getting a weird message when trying to --assemble the RAID. I have 6 drives, so /dev/sd[a-f]1. When trying to ...
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Ubuntu 12.10 “fakeRAID” RAID0 installation

I have 2 80 Gb HDD's with a RAID 0 motherboard configuration (Intel Z77, fakeRAID) with a 100 Gb partition running Windows 7 and a 60 Gb partition where I would like to install Ubuntu 12.10. However, ...
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Tips on setting up raid10 on *buntu

I'd like to set up a software raid 10 array (4x2TB) for a workstation using a fresh install, but I'm finding non applicable/conflicting/old resources online. I'd like to get the community's advice on ...
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Setup of two additional SSD drives in RAID 1

I have an ubuntu 12.04 setup with two HDD that is setup in a software raid 1. Now I need to add two additional SSD drives for separate storage of some database files. They need to be setup in their ...
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Need assist - Converting Windows Media Server to Ubuntu

I found this guide but have a few questions: http://dagolav.prestegarden.com/installing-ubuntu-on-the-hp-mediasmart-ex490/ I'm not a Linux guru yet, fairly new. I want to convert this sweet little ...
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219 views

Two different SSD drives, which one to mount for home?

I've had a 128GB toshiba SSD on my T400 and have just bought a new 240GB intel SSD (335 series). I want to have a clean new dual boot install of ubuntu and windows 7. With my SATA II system, the new ...
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Recovering from RAID5 with 2 failed drives, only one of them really dead

I have (had?) a RAID5 with 3 devices. One of them died, and after some days I experienced that the RAID stopped at all. However, I could restart it without experiencing any problems, but it stopped ...
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Is the Alternate Ubuntu installer still required for LVM or Software RAID setup?

Over the past 5 years, I have been setting up Ubuntu servers using the Alternate installer. I need to provision a new server today, and I'm curious if the Alternate CD is still the only way to setup ...