Questions tagged [raid]

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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Install 16.04 LTS on new hardware with Dell Perc H740p raid controller

I have read through all post I can find regarding the installation of 16.04 LTS on a Dell R640 server with a PERC H740 p controller. Everything I have found relates to adding the driver AFTER ...
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unable to use RAID disk during ubuntu 18.04 server installation (curtin installer)

I create a RAID 5 Volume with 5 Hard Disks by Hardware RAID, and intend to install ubuntu-server 18.04 by USB. First I encounter MODSIGN: Couldn't get UEFI db list, unable to open /dev/sda after few ...
stackoverYC's user avatar
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Directories disappear and reappear in Ubuntu 16.04

I have a really odd issue with Ubuntu 16.04 (Server). I have a hardware-RAID working in my Ubuntu Server (HP Microserver Gen10), that's containing my backups in several directories. Everything worked ...
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How much available space do I have?

I am running Ubuntu 16.04 server with a desktop GUI installed. I have two 1TB hard drives divided into four partitions each with a Raid 1 array. I need to increase the size of the array my root ...
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Installing Ubuntu Server 18.04 w/ RAID 1

I wish to put up a Ubuntu server for 10 people, mainly for file sharing via samba (for now). The server, in an Intel SC5295UP chassis, had the old unsupported distro Dark Star. Linux was installed on ...
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Ubuntu 18.04 server and RAID - fakeRAID or hardware or mdadm

I'm unclear what my best option is to install Ubuntu 18.04 server onto a new machine. I initially thought I'd be able to set up a RAID 1 mirror on my 2 SSDs in the UEFI menu and use that. Following ...
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Ubuntu Server 18.04 Intel RAID (RST) can't detect the RAID

I've created RAID10 in BIOS (Intel RST). In 16.04 everything was OK. And in 18.04 I can't see my raid at all. I choose: Active MDADM containers (Intel/DDF RAID) => "yes" Activate Serial ATA RAID ...
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Cannot detect partitions during Ubuntu 18.04 install (dualboot with Windows 10)

I attempting to install Ubuntu 18.04 alongside Windows 10; I am using a Dell XPS 15 9560. First, I made sure to put the boot in Legacy mode with secure boot turned off, as it was initially in UEFI ...
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Apparent Ubuntu 18.04 Intel RAID 0 Hardware Incompatibility

I have created an Intel RST hardware RAID-0 array from 2 500 MB HDDs. Ubuntu 18.04 detects this to my pleasure. However when I get to the "[!!] Partition disks" menu it either is too advanced for me ...
Arrrstin's user avatar
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How to pool HDDs without having them all spin up?

I would like add a bunch of SATA HDDs into my HTPC and turn it into a NAS. The HTPC is running Ubuntu 16.04 LTS To have a safety net for HDD failures, I will be using the SNAPraid with one parity HDD....
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Dismissing a RAID1

I've a task in mind that sounds simple, but I'm not sure it would be possible to complete. I'm dismissing a server, on which I've all partitions (boot partition and others!) mirrored as RAID1 through ...
angelodelia's user avatar
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Can't create LVM on RAID1

I have issue creating LVM on RAID1. I have formatted two HDDs for Linux RAID Disk /dev/sdg: 9.1 TiB, 10000831348736 bytes, 19532873728 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (...
Martynas Šileika's user avatar
2 votes
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Adding Disk to Degraded RAID1 Array

I am trying to add a disk (sdc1) to a degraded RAID1 array (md126), but I don't know how to proceed. Any help will be appreciated because I don't want to lose any of the data on the drive. Output isn'...
Merilla Michael's user avatar
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GParted FAT32 RAID10 resize running for 18+ hours [duplicate]

I am trying to resize a FAT32 partition on a software RAID 10 from 1.7 TiB to 700 GiB. I am not moving the beginning of the partition, only the end iotop shows 90+ percent IO for gpartedbin It has ...
kaesaecracker's user avatar
4 votes
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Where are the server "alternate" installer images?

Long time user of Ubuntu, particularly 14.04 LTS. Trying to do a fresh install on a new set of HDs with 18.04 LTS. I have used 14.04 LTS on RAID 1 boot drives and want to do the same with 18.04 LTS. ...
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Ubuntu Server 18.04 does not show Intel SW RAID(RAID 0 or RAID 1) device in Partition Manger

My Intel system is configured with RAID 0(2 disks) or RAID 1(2 disks) in BIOS. And I use the image from http://cdimage.ubuntu.com/ubuntu/releases/bionic/release/ to perform installation. During "...
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unable to mount raid 1

I have Ubuntu 16.04.4 LTS I have a set of identical HDD. I have created a raid 1 array but i can not seem to mount it. cat /proc/mdstat md126 : active raid1 sde[1] sdd[0] 24412992 blocks super ...
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Grub install fails on Fresh 18.04 alternate server Raid 1 installation

I cant install Grub on a Fresh 18.04 alternate server Raid 1 installation. I already tryed it 2 times and grub cant be installed, no matter which volume i try. I use 2 physical volumes 4TB for Raid ...
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HDD writes are faster on VM (Vagrant box) and slower on bare metal (host)

HDD writes are slow on ubuntu running on bare metal. I started a Vagrant box on the same host (running same version of Ubuntu) and writes are very fast compared to bare metal. Following are the ...
Nilesh Simaria's user avatar
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RAID support in Ubuntu 18.04 Desktop installer?

I want to install Ubuntu 18.04 Desktop using a software RAID 1 configuration. I don't see any RAID option in the installer. I have found a question about RAID support in the server installer, but no ...
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Using Hp Smartarray P400 with Ubuntu

I have recently been trying to install Ubuntu 18.04 on my ProLiant DL380 G5, which is using the RAID card Smartarray P400. When installing the desktop version, it wouldn't detect any hard drives, (...
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RAID set up in Ubuntu 18.04

I am trying to setup one of my servers with Ubuntu 18.04 server edition. When trying to do disk partitioning it does not allow me to choose Software RAID configuration (That open does not exist at all)...
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convert a single drive btrfs disk into a RAID1 with a second disk

I am running btrfs 4.15.1 on a fresh ubuntu 18.04 server. I have a small hardrive which for / and a large disk for documents served to my colleagues in our office via samba. That data drive is used ...
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Ubuntu Server 17 - move EFI to different disk

I have two hard drives that were configured for software RAID 1. As luck would have it, the one with the boot information is going bad, and needs replaced. So far, I've managed to break the RAID, but ...
user818764's user avatar
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1 answer
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RAID0 HDDs show up separately in Ubuntu

I have an all in one XOTIC PC with Windows 10, I installed Ubuntu 16.04. In Windows I can see and access my RAIDed HDDs, but in Ubuntu they show up as two separate disks. In the BIOS, they are RAID ...
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Ubuntu server doesn't detect new disk using fdisk/cfdisk/parted

I'm mounting a new (physical) server. I installed Ubuntu but it detects only sda (which is a RAID1) but didn't find a second disk (which is a RAID 5 of 3 disks) when I do fdisk: My BIOS detected the ...
tdamak's user avatar
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Changing Ubuntu Server 14.04.5 Server on Mdadm RAID 5 from BIOS boot to UEFI

I have an install of Ubuntu Server 14.04.5 LTS that was installed and running on an mdadm RAID 5 array across 4 hard drives. Originally all 4 drives were 2TB. I have upgraded one of them to 3TB (...
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no authority to raid10 array linux ubuntu

I have just created a Raid10 array with mdadm out of 3 X 1TB hhd, named md0. I followed these instructions: https://www.digitalocean.com/community/tutorials/how-to-create-raid-arrays-with-mdadm-on-...
Joe Molnar's user avatar
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grub: couldn't find a necessary member device of multi-device file system (Ubuntu, zfs on root)

I use a script to deploy "ZFS on root" on Ubuntu16.04. It configures multiple disks as raidz, raidz2, raidz3 or mirror. While this script has always worked in the past, it seems to be running into ...
S.Tom's user avatar
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External hard drive gets disconnected while writing files to it

Ubuntu 17.10 I have a HW-RAID enclosure with two drives in RAID 1. The drive is formatted and encrypted LUKS/EXT4. The drive works perfectly when mounted or dismounted or when a few small files are ...
botondcs's user avatar
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Ubuntu 17.10 UEFI with raid

I have two 3TB hard drives i want to use for my server. Im not experienced at all regarding file systems and raid. What i did was to install my disk as following Sda 3TB sda1 512 MB raid sda2 64 GB ...
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Most efficient way to regulary update offline backup disk?

I am sorry if this question has an answer already somewhere, but as it is highly specific, all my search queries returned standard questions/answers corresponding to the backup topic in general. What ...
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Problem expanding Raid 6 array on 64 bit Ubuntu Server 14.04

I currently have a raid 6 array running on my 64 bit Ubuntu server (14.04) that runs a Plex server for me. I have 8, 3TB disks in the array and the max usable space is 16.37 TB but the largest I can ...
Landmine's user avatar
2 votes
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372 views

Installing Ubuntu 17.x Raid1 Boot Partitions on SSD's?

I have been experimenting with installing CentOS (7 Server with GUI) and Ubuntu (16.04.4 & 17.10 Server and Desktop) on two identical Hosts. Host 1 = CentOS7 Server as host to 2 x VMWare 14 Pro ...
Pingumann's user avatar
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1 answer
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Recovering a RAID array

I accidentally corrupted my build of Ubuntu 17.10 through a forced reboot (on a 5th hard drive). In my system I had 4 other hard drives part of a RAID5 array. Now that I've installed Ubuntu 17.10 ...
user448574's user avatar
2 votes
0 answers
538 views

How do I install Ubuntu with RAID and full disk encryption and UEFI?

I have a slightly unusual setup which I am failing to get running: -Dell Precision Laptop with two identical NVME SSDs -I'd like to install Ubuntu to them with RAID 0 and full disk encryption -The ...
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Cache and sync a directory using RAM for faster access

Are there any apps or any ways to cache and sync a hard disk directory with RAM? Currently I'm making a fake disk and RAM RAID. Firstly, I make an .img file on hard disk: qemu-img create -f raw /...
smnlss689's user avatar
4 votes
3 answers
7k views

Raid array missing after reboot

While I see that there are multiple other questions that seem to be about the same (or similar) issue, none of them have a difinitive answer. Hence, I ask it again. I am following the guide here (...
Snappawapa's user avatar
1 vote
2 answers
3k views

16.04.4 kernel not supporting PERC H740p RAID controller even though 17.10 does

16.04.4 uses the 17.10 kernel. In other posts here it's stated that the Dell PERC H740p RAID controller is supported from Kernel version 4.11/4.13 up. Surely it should therefore work in 16.04.4? No ...
user1827139's user avatar
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RAID disk size is less than display in SSA on HP Proliant DL380 Gen10

I set up RAID1+0 with 8 1TB SATA HDDs by SSA(Smart Storage Administrator). I confirmed 4TB disk was made in SSA but after installing Ubuntu16.04, I could see only 1.8TB disk size by both parted ...
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Ubuntu 16.04 and Cubic for customised Kernel

There is a similar question asked previously but it did not contain a working solution. Background - I am trying to install Ubuntu 16.04 server on a Dell server with H740p PERC or RAID card. Problem ...
m0l3cul3's user avatar
1 vote
1 answer
1k views

Adaptec RAID 8805 aacraid driver issue in Ubuntu 16.04

I've been experiencing an issue with the Linux source code driver provided by Microsemi for their Adaptec RAID 8805 RAID controller. Since upgrading from Linux kernel v4.4.0-112 to v4.4.0-116 in ...
PicoutputCls's user avatar
1 vote
1 answer
317 views

Can ZFS be setup for redundancy of my entire OS (Ubuntu 16) and data?

I'm planning to do redundancy backup for my office server running Ubuntu 14 and the ZFS option came up in my research. To my understanding, hardware raid (RAID1) creates a full clone (mirror) of my ...
airzoink's user avatar
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1 answer
668 views

Installing Ubuntu on a system with a windows 10 that won't boot!

I really hope that this does not turn out to be a duplicate question as I'm really confused and tried many options. I have a DELL XPS 8920 PC which had a windows 10 installed on it. I tried to ...
szm's user avatar
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Install RAID0 on 2 GPT SSDs , booting in Legacy Mode, Ubuntu 16.04 Desktop

My setup 2x 512GB SSDs - GPT Partition Legacy boot ssd layout(on each disk): 4MB: space reserved for bios grub(not part of RAID0 array) 16GB: swap - reserved for RAID volume 25GB : mnt / - ext4 - ...
Paritosh Kelkar's user avatar
2 votes
2 answers
2k views

How to setup bitrot protection with ext4 on 2 SSD workstation?

I'm surprised at the lack of documentation on this. Most bitrot protection schemes seem to be oriented at NAS. I'm thinking of doing the following: format a raid1 with mdadm install ext4 (64bit?) ...
Ray Foss's user avatar
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Ubuntu not recognizing anything with RAID enabled

I wanted to start learning how to use Ubuntu, so I created a bootable USB and proceeded to try installing Ubuntu from this USB for dual booting with Windows 10. However, when I boot with the USB, ...
Jeffrey Carr's user avatar
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2 answers
1k views

RocketRAID 640 - Ubuntu 16.04 / Kernel 4.13 Support

Anyone have any idea how to get a RocketRAID 640 working under 16.04? Seems anything official or even suggested is for much older Kernels or Ubuntu releases. This has been a reliable and solid ...
DGCupit's user avatar
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764 views

Will my drive show up when installing Windows if I change it from RAID to AHCI?

I have Windows 10 installed on a 256gb SSD with a NTFS File System. I noticed that when trying to replace the OS with Ubuntu 16.04 that my partitions were not showing up, only my FAT-32 USB Drive with ...
APorter1031's user avatar
1 vote
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273 views

Recreate RAID1 after upgrade to 16.04--mdadm help

I recently upgraded my system from 14.04 to 16.04. I stuck the DVD in the drive and chose Upgrade. The upgrade appears to be good. Before upgrading my system I had 4 drives in the computer. /dev/...
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