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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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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Ubuntu 12.04 RAID 5/6: Native RAID or ZFS?

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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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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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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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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535 views

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/ ...
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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 ...
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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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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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511 views

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 ...
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315 views

Expanding Apple RAID 5 in terminal

I own a Mac Pro with an Apple RAID card. I set it up with three 1.5TB drives. I recently replaced one drive with a 3TB drive and now want the volume to expand to meet the new capacity. The Apple ...
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Is there a way to upgrade a machine which is using software raid and LVM to 12.10?

I realize Ubuntu has dropped the alternate cd for 12.10, which broke this long-time user's heart. I always do a fresh install when upgrading, but I have software raid and LVM, and as far as I can tell ...
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ubuntu 12.04 and/or 12.10 can boot from software raid5?

I read from a very nice post (http://forevergeeks.com/setup-ubuntu-server-with-raid-5/) that ubuntu cannot boot from a raid 5 partition. Since the post is quite old I wonder if this is still true or ...
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disks not ready in array causes mdadm to force initramfs shell

Okay, this is starting to get pretty frustrating. I've read most of the other answers on this site that have anything to do with this issue but I'm still not getting anywhere. I have a RAID 6 array ...
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raid advice with SSD and two HDD

I have a new machine with one 128GB SSD and two 1TB HDD. On the SSD is the OS and my initial thought was to put the two HDD in RAID 1 for user data. After some more thought I came up with two other ...
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Add two new HDD in Raid 1

I just made a fresh install of Ubuntu 12.10 on a new SSD (/dev/sda). Now I would like to add two 1TB drives (/dev/sdb /dev/sdc) in RAID 1 but I'm pretty clueless on how to do it. This is what I came ...
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Dual Boot (Ubuntu and Windows 7) on a RAID SSD's with UEFI [duplicate]

I recently bought an Sony Vaio SVS13A1V9EB, which has a RAID between two 64 GB SSDs and a Hybrid-graphics. (Major Issue) I want to have Windows 7 (It is preinstalled) and Ubuntu on this notebook i.e. ...
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Installing 12.04 server as a software RAID 1 mirror fails to boot

I'm installing a few new Ubuntu Server 12.04 LTS servers, and they have two 512 GB SSDs. I want them to use software RAID 1 mirroring, so I was following this document religiously step by step: ...
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How can I create a 4TB partition on my software RAID5 device?

I have set up a RAID5 device with three 2TB hard drives using mdadm. The device was successfully created, but I cannot seem to create a partition on the device. When I try to make an ext3 or ext4 ...