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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Setup RAID 10 on RAID10 supported main board failed

I have 4x2T SATA disks and want to build RAID10 on a main borad: Intel Server Board S2600CW2 http://ark.intel.com/products/83027/Intel-Server-Board-S2600CW2. Somethings are quite confusing to me 1,...
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Ubuntu 14.04.3 LTS - RAID 5 volume vs capacity discrepancies

I currently have a RAID 5 setup on an Ubuntu 14.14 RAID setup includes (3) 2TB disks. The RAID /dev/md127 is showing 4.0 TB in size. Which would be correct I believe on a RAID 5 setup with 6.0 TB in ...
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RAID 5 status = “Initialize”

I recently built a PC and loaded 14.04 on it. My motherboard (ASRock z97 Extreme 4) has the capability to run a RAID array built into it (pardon my terminology if I'm wrong, I'm not really that good ...
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Need help RAID + UEFI + boot crash

I have a server in RAID 1 with Ubuntu 14.04 LTS. Because of UEFI I could not install boot in raid so I left the boot on one of the hard drive. The problem I have is that the HDD drive where the ...
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32 views

Cache a (non-root) hdd which already has data on it with bcache - possible?

Could not find any recent info on this subject, so here goes! I have a small home server with 2 disks: SSD (120 gb), formatted as /ext4 which has an Ubuntu Server 15.10 install (including /home, /...
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29 views

Setting up a RAID 1 NAS with a seperate OS HDD?

So I'm a solid ubuntu-amateur with only a year of experience or so hoping to put together an ubuntu-samba file server and looking to learn more. I have seen a couple tutorials however the tutorials ...
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38 views

How to configure existing raid after upgrading to 14.04 from 11

I have a pci raid controller, with two 250G drives. Configured this to work on ubuntu 11 a few years back. Have since forgotten much about the details of this configuration (i.e. software, hardware, ...
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If I have created an LVM on one server can i move it to another?

Alright, so 2 questions here really. 1) I have already created an LVM uaing only 1 disk, if i remove this disk and put it into a new server will my data be lost or can I tranfer / create the LVM ...
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93 views

Issue with RAID CacheCade on Lenovo System x

I have a Lenovo System x 3500 M5 with RAID controller to work with CacheCade. I am using the storecli from https://www.thomas-krenn.com to configure the SSD drives as cache for the HDD drives. ...
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51 views

Share encrypted folder with Samba but only mount on demand

There are some similar questions, but my situation differs a bit. I have a server running 24/7 with a raid, which is shared via samba. I want to encrypt some folders on the raid and make them easily ...
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60 views

How to split RAID 1 disk created under Windows Server

I got a RAID 1 created under Windows Server 2012, as you can see : $ fdisk -l Disk /dev/sda: 2.7 TiB, 3000592982016 bytes, 5860533168 sectors [...]Disklabel type: gpt[...] Device Start ...
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34 views

MDADM Superblock can't be read - raid 1 mirror

I have a ubuntu linux box, with a raid mirror, 2x3TB using mdadm It's not the system disk, but a raid 1 mirror that contains my files. After power cut, restarted and now getting "can't read ...
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43 views

Can I get SSD rw performance while keeing data security if I combine SSD & HDD in RAID1

I have 2 storage devices; classical slow HDD( 750GB, /dev/sda ) and faster SSD( 128GB, /dev/sdb ). Currently I have installed Ubuntu & Mint on same btrfs partition on SSD ( /dev/sdb5 ). My btrfs ...
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124 views

I think I messed up GRUB (RAID installation)

Today I was doing a apt-get dist-upgrade, and a popup showed up, "Do you want to follow without installing grub?" or something like that, and I wrongly pressed YES, So, I have done a apt-get install ...
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77 views

Can I use RAID0 on Ubuntu Server if my motherboard doesn't support it?

I have a fairly cheap home server build and I want to setup RAID0, but my motherboard doesn't support it. Can I set it up using only software in Ubuntu? I have two empty 1TB Hard Drives. I have ...
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141 views

Building a light weight home server/NAS. Question on RAID and filesystems

I'm planning a build that will be using Ubuntu Server 14.04. I have been trying to learn as much as possible and practice in virtualbox before actually installing any hardware. I am really enjoying ...
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162 views

How to Install Ubuntu Desktop on RAID 1

I am having to rebuild my Ubuntu MYTHTV system (RAID 1) on new hardware due to power supply failure taking out major components (originally built on Feisty). I understood that RAID support was being ...
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120 views

Am I supposed to RAID0 the ESP partition? (mdad software RAID)

I'm well-versed in manually-partitioning for RAID0 or RAID1, but only with BIOS, and I would just give /sda an extra 1MB partition for GRUB. With UEFI installed, however, I am not sure what to do ...
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126 views

Best RAID solution with a hardware RAID card?

I have a repurposed server. Before the repurpose it was an ESXi host so it had 6 2TB hard drives and an Adaptec 6805 SAS RAID card (and 2 6-core processors and 128GB ECC RAM which is another problem) ...
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42 views

sda sometimes changes to sde after reboot

I have a problem on ubuntu 15.10 server. Sometimes, the boot device is /dev/sda and after reboot it changes to /dev/sde, which messes up my raid. /etc/fstab: UUID=34510a0f-c98f-407b-a11c-...
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46 views

Installing GRUB with RAID

I'm setting up an Ubuntu Server 14.04 system from scratch. I'm installing via a USB key (which mounts as /dev/sda I think). I have 4 3TB SATA Seagate drives, and would like to mount / on a software ...
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mdraid 0: spindown of disk, F/W: Invalid Phase Change, F/W Device Problem

I use Ubuntu 14.04 64bit server with two SCSI disks in software raid 0 and installed unity on top of it. I know it is not the most secure setup but I love to recycle old hardware (and most of the time ...
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124 views

Ubuntu Server with kubuntu-desktop/kubuntu-full vs Kubuntu ISO

I've recently installed Ubuntu Server with a RAID 0 setup and after that I've installed both kubuntu-full and kubuntu-desktop. That way I get a Kubuntu setup without using the Kubuntu iso, since the ...
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39 views

Ubuntu 14.04 LTS long sleep on boot Raid 1

I've recently installed Ubuntu with raid 1 on 2 new 1 TB drives. Now for some reason it takes really long for it to boot. I've tried looking at it with Bootchart and it seems like it takes a lot of ...
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97 views

grub fails to find btrfs-filesystem after adding new devices

Having my server (Ubuntu 15.04) equipped with two 1TB HDDs in raid1, I added yesterday two new 4TB HDDs. After adding those with btrfs device add ... I rebalanced the system with btrfs balance ...
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57 views

RAID array somehow has extra drive, how to remove using mdadm?

I have a simple RAID 1 array as follows: sda (2TB total: partition1: 15GB partition2 1.8TB) sdb (2TB total: partition1: 15GB partition2 1.8TB) md0 = RAID1 15GB md1 = RAID1 1.8TB Somehow, md0 ...
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Ubuntu Server 14.04 LTS Server not seeing a RAID1 setup by AMD-RAID

I am attempting to install Ubuntu Server on a RAID 1 array I setup through my AMD-RAID. This is the legacy RAID that comes with my MSI motherboard which is configured in the BIOS. I have setup the ...
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100 views

What provides the mdadm-raid boot facility?

Three of my initscripts depend on boot facility mdadm-raid. In particular, user@host:/etc/init.d$ grep mdadm-raid * cryptdisks:# Should-Start: udev mdadm-raid lvm2 cryptdisks:# Should-Stop: ...
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64 views

Failed Raid 10 Disk - Cannot mount raid to recover

New to Linux and Ubuntu. I am running Ubuntu version 14 with 4 x 2TB drives in a raid 10 array. 2 of the drives have failed and I cannot get the array to mount in order to fail the drives and add new ...
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474 views

Ubuntu server 14.04 LTS black screen after grub

Motherboard: Asus H170-PRO CPU: Intel Core i5-6500 HDD: 1TB x2 From the BIOS I made the following changes: AdvancedMode -> Boot -> Secure Boot -> Os Type = Other OS (instead of Windows) Ez Tuning ...
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Error On GParted When Creating RAID Array

I keep getting the error message below when I load up GParted. It only occurs after I've put my drives into a RAID array using mdadm. The RAID /dev/md0 drive itself doesn't have the error, but the ...
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How to verify grub2 on a Soft RAID setup

While upgrading the distro I got the following warning: Setting up grub2-common (2.02~beta2-29) ... Setting up grub-pc-bin (2.02~beta2-29) ... Setting up grub-pc (2.02~beta2-29) ... Installing for ...
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257 views

Install Ubuntu 15.10 Desktop with RAID1

I would like to install a Ubuntu 15.10 desktop on a computer, with a RAID1 (and LVM) setup. Before, I used the alternate installer to do this, but that installer is not available for the last few ...
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330 views

How do I convert from RAID1 to JBOD with btrfs?

I have the following RAID1 btrfs set: Label: none uuid: 87595481-7b5c-464e-b10d-d9b2b0852e11 Total devices 4 FS bytes used 4.77TiB devid 1 size 2.73TiB used 2.63TiB path /dev/sdb ...
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Ubuntu 15.10 crashes with RAID-10

When trying to install Ubuntu 15.10 with a RAID-10 created the system crashes after some time during the installation. Hitting Alt+F4 gives the following output as seen from screenshots in attachments....
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Migrating from broken motherboard

I have a 14.04 LTS Server that I use for virtualisation with KVM. The server has two hard drives with RAID 1 using mdadm (pretty standard as set with the Ubuntu installer). Yesterday, the motherboard ...
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113 views

Installing Ubuntu on RAID 1, but not using all disks capacity? And what is HotSpare?

I'm totally new to all this hard disks matter and even newer to topic with RAID. I hope somebody can help me! I have installed Ubuntu 14.04 LTS (BioLinux) on Dell Precision T7500, with Dell PERC 6/i ...
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Raic controller with ext sata cage

I was wondering how difficult it is to create a Raid 5 system on an Ubuntu 14.04 desktop pc already running. I plan to use this Raid card with this Sata Cage and add 4 HDD for backup and storage. I ...
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Attempting to Recover a Raid 5 array with 1 failed disk and complete hardware failure

Long story short - Synology 1511+ reported HDD failing and gave me an option to attempt to recover. Came back some hours later to find the entire device had failed. Built a new Ubuntu box installed 4 ...
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528 views

Ubuntu 15.10 can't see RAID 0 partition

I have 2 drives I've set up in RAID 0 (/dev/sda and /dev/sdb in Ubuntu). When I was running 15.04, I installed Ubuntu and a device appeared in /dev/mapper, which was the raid drive. After installing ...
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239 views

Massive read Problem with LSI SAS 9211-8i Host Bus Adapter under 14.04.3 LTS

I have a new installed 14.04.3 system with massive read problems from a raid 10 over a Avago LSI SAS 9211-8i Host Bus Adapter. I tried to install the latest driver downloaded "Linux Driver-...
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561 views

How to dual boot Windows 10 on RAID?

I've been trying to install linux on my system for a while now, and I'm at a loss for what to do. Trying to dual boot windows 10. Have a raid controller with mirrored hard drives. When currently ...
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New 14.04 i386 desktop with 3ware 9500s and 4TB RAID, can't partition

My install was a bit troublesome but I have most things sorted out. The main reason I moved this system from XP to Linux was to get support for my upgraded 4TB raid array (old was 2tb). Both GParted ...
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GIGABYTE P25W v2

If helpful, I can run dxdiag and CPU-Z to show internal components. But my question lies in this. I'm running into lots of errors trying to live boot to test the system. I know intel is a closed-...
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269 views

How can I add drives to increase the capacity of a software raid 5 without losing data?

So I built a server for all my media streaming and storage needs. It's got three 3TB WD Reds in it configured in a RAID 5. I'm running Ubuntu 14.04.4 LTS. I had a friend set up the raid for me (I'm ...
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115 views

Read/Write issues, SATA PCI-E Addon [closed]

I'm rather new to Ubuntu/Linux, and it's been an education experience so far. However I've been struggling with an issue I've been unable to overcome. I'm getting an issue that causes freezing/...
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74 views

Restore RAID Drive on New OS

I had a problem with my Debian operating system on my SSD and have removed it (Debian) to install Ubuntu server. Originally, on my Debian operating system, I had installed mdadm and had a spanned ...
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64 views

Let LVM+LUKS volume grow over new drive or RAID?

I would like to extend the storage capacity on my Ubuntu server by adding more drives. I'm currently using LVM+LUKS on my server so I'm having some difficulty understanding how I may add my new ...
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97 views

Questions about creating RAID1 on Ubuntu VM

I'm trying to create RAID 1 - array on VM Ubuntu 15.04 with two disks:on the first disk there is a section with the root. The second disk is empty.In the process, I had a few questions: 1. I mounted ...
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54 views

Troubles with creating RAID1 array on VM Ubuntu 15.04

I'm trying to create RAID 1 - array on VM Ubuntu 15.04 with two disks: sda and sdb. First disk already had partition table, so i created sections for the second disk using fdisk /dev/sdb: Then i ...