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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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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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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85 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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60 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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424 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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31 views

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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253 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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291 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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99 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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19 views

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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26 views

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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515 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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218 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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489 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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61 views

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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31 views

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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246 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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105 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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60 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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63 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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95 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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53 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 ...
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158 views

Can I manage ZFS with Landscape and MAAS?

I have 5 different servers. I am very interested in installing ZFS across all of them. I also am interested in using JuJu, MAAS, and Landscape to automate the installation of ZFS, and the management ...
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44 views

Restoring Ubuntu 14.04 onto a new hard-drive when the old system was raid 1. Should I expect problems?

My current system is running software RAID 1 and I have made a backup of this system with the intention of restoring it onto a new hard-drive. For my new hard-drive I do NOT want RAID. Will there be ...
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79 views

Dell R430 Raid Array not recognized 14.04 server

I configured the OS to install on 2(mirrored) 16bg SD cards. After installation noticed the array was not created. created a RAID10 array of 4 1TB HDD but cannot get Ubuntu see it to mount it. How to ...
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161 views

remove mdadm raid1 without loosing data

I have 2 hdd's in raid1 using mdadm. Now i want to completely disable raid but i want to keep data on disk 1, and use disk 2 separately Is there a way to do this. Ill be honest, i know what raid is,...
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42 views

Giving Plex permission to read and write to RAID storage

I've been having issues getting Plex to read and write to the RAID storage where we are trying to store our music/pictures. The drive is located at /media/user/storage I've read as much as I could ...
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260 views

How do I convert a RAID 4 array to RAID 0?

I had a three-disk RAID 0 array and ran the following to add a fourth disk: mdadm --manage /dev/md127 --add /dev/xvdi Each disk is a 1TB EC2 volume. The array took about 40 hours to reshape. About ...
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How do you get a raid with 4 terabytes to give you the full disk amount in ubuntu server

I am running Ubuntu server 14. I have two 2 Terabyte Seagate drives raided to make a 4 terabytes. However when I mount the logical drive and run sudo lshw -c disk it shows as having 3999 GB of room. ...
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46 views

Installing Ubuntu 12.04 on Dell precision R5500 Desktop

It will be really good if someone can help me with this issue. I need to install Ubuntu 12.04 on the Dell Precision R5500 and when i install the Ubuntu Server , i started to get this Issue. This ...
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165 views

Installing alongside windows on raid 0

I currently have Windows 10 on 2x150gb raid 0 configuration (plus 2x1,5tb hdds with data, not raid) and want to install the latest ubuntu from dvd. If I choose the first option (to install alongside ...
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Fresh install of Ubuntu Server 14.04 not loading on Asus X99-E WS SOFTWARE RAID 1

I have TWO 1TB drives configured as SOFTWARE RAID 1 using the Asus X99-E WS motherboard. Both Drives are connected to the Asmedia SATA controller instead of the Intel SATA controller. I intend to use ...
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711 views

Bootable flag doesn't change to “on”

Installing Server 14.04 and configuring software RAID-1. I already made my swap partition on my first HDD, and when i configure the remaining FREE SPACE, the option for "Bootable flag:" is present but ...
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Do I have to name partitions?

When installing Ubuntu Server 14.04, am I required to name all my partitions or can I leave the "name:" field blank without running into any problems/confusion now/later? I'm pretty new to the Ubuntu ...
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copy partition table on raid1 restore to the wrong disk

My computer had a broken disk (SMART warnings). Before I had no raid1. I created one following this tutorial: https://www.howtoforge.com/how-to-set-up-software-raid1-on-a-running-lvm-system-incl-grub2-...
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Unable to load Ubuntu Server 14.04.3 with Promise FastTrak TX2650 configured as RAID1

I am very new to linux and hope that you guys will be able to help me out. I have TWO 1TB drives configured as RAID 1 using the PROMISE RAID BIOs setup. POP in the installation disc and started the ...
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162 views

how to empty /boot on ubuntu server 14.04 LTS

I have made a NAS drive which is running server 14.04 LTS and up until today its been working fine but I now have a problem updating it. I keep getting a message saying there is no more space on /boot ...
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76 views

Hardware (/fakeraid?) RAID 1 fails to show correct size using Asus X99-PRO

I have a Ubuntu-only system with 3 disks, 1 SSD drive and 2 identical mechanical drives. The first one has the core Ubuntu install while the latter 2 I want to set-up with RAID 1. Unfortunately I get ...
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211 views

mdadm - Obsolete Array and current Array have same UUID. Current array won't assemble on boot

It's rare I ask questions, but Google has turned up a blank on this one, so here I am. I have a problem with my mdadm software Raid running on Ubuntu 14.04 Server edition. Specifically, I seem to ...
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165 views

Ubuntu Server Installation is Getting Stuck

I have been trying to install Ubuntu server on my IBM x3550 server to replace windows server; and the installation was doing just fine until it reached "Running live-installer-console-setup" at which ...
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Ubuntu Server 14.04.3 on HP Microserver Gen8 does not recognize logical raid volume

I am having the problem that the Ubunto 14.04.3 Server does not recognize the logical volume built by the b120i raid Controller of my HP Microserver Gen8. I installed the server on a micro sdcard ...
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Rebuilding RAID 10 after crash

I am running a RAID 10 The structure 1x USB drive contains the systems and is the bootup disk. 4x 2T drives contain the RAD10 Array. What happened: • 3x 2T disks and 1 x 1.5T disk • Recently ...
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298 views

Fixing a broken RAID5 using mdmadm on Ubuntu 12.04 [QNAP device]

One of our QNAP NAS had gone down while alerting on disk thus they were all working/accessible on the array. And I'm trying to recover the DATA as the QNAP NAS neither boots nor responds with/without ...
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113 views

Hardware raid 0 SSD with TRIM

I currently use 1 SSD with discards enabled in my fstab, but I am looking to move to 2 SSD's in RAID 0. If I hardware raid 0 the drives using my motherboard, would trim still work using the discard ...
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78 views

Looking for driver on HP Dynamic Smart Array B320i

I owe hp MicroServer ProLiant Gen8 G1610T, I need the driver (any version of ubuntu is good) of the controller B320i because in case of damage of HardDisk, the system asks "Do you wish to start the ...
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41 views

BIOS Not Detecting RAID Array After Adding SSD

My system used to boot to a RAID 0 array of 2 300GB HDDs, then I added an SSD as a secondary drive, and now it doesn't detect the RAID array at all, not in the bios, and on boot just hangs at a blank ...