Questions tagged [raid]

Redundant array of independent/inexpensive disks; a technology which utilizes multiple disks to provide increased reliability, performance, and/or redundancy. Can be implemented either in software or with a hardware controller.

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How to create redundant array of assorted commodity hard drives?

Well, I have some good old hard drives and a good idea is to combine them into an array. For example: 250G 300G 500G 1000G 2000G (There is also a 3000G drive, but I'll save it for regular backups). ...
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Ubuntu 18 partition error

I'm new on Linux, just created VROC NVMe RAID1 and installed Ubuntu 18.04.3 on it. Then noticed that lsblk gives an error: "GPT PMBR size mismatch (1781612543 != 1875385007) will be corrected by ...
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How can I calculate the availability of my RAID 6 system?

For a project I have to proof that my RAID 6 system meets the availability target of 99,8%. I have 4 disks installed (2TB each). The formula for the array failure rate is given: Array failure rate (n.....
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How to unlock multiple luks-devices using dropbear-initramfs

My system setup is as following: One single SSD with LUKS and LVM (and of course an unencrypted boot partition). The debian system is installed there. Two HDDs assembled as RAID0 with LUKS and LVM ...
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RAID5 compatability: repeatedly zeroed superblock: WD Red 8TB drives: wd80efax-68LHPN0 and 2x 68KNBN0

Summarizing the problem: I have been scraping by with JBOD for years, but finally need a real 'micro data center'. I bought 3 drives for my centos8-stream box over a couple months, but I have heard it ...
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How can you merge two hard drives of 4TB?

Yes, I know it is not recommended (but it's only temporary) and yes, I know I would lose all my data if something happens. But, is there any way to merge my two 4TB drives into one ? I tried with the ...
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Does storage pool, virtual disk pool and drive pool mean the same thing in SAN terminology?

I am trying to make sense of the following quote: In general, it is recommended to use fewer storage pools within Dell EMC Unity arrays because this reduces complexity and increases flexibility. Dell ...
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Errors on a zpool filesystem [migrated]

I'm using ZFS on a Debian 9 machine. This machine has been working for years without any problem until today. The zfs pool is mounted on top of a RAID system, controlled by hardware (so only one drive ...
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Unable to replace faulty harddrive to rebuild the Raid 1 Array (intel RST Raid 1)

we have HP server HP ProLiant ML10 Gen 9 with Ubuntu 20.04.4 LTS. We have enabled Raid 1 array for two HDD sized 2TB using Intel RST Raid configuration (which is an fake/firmware raid). Now my goal is ...
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How can I set up a RAID 1 mirror with data resiliency to ensure that my data is safe from corruption and drive failure?

I'm new to RAID arrays and data redundancy and I have a multipurpose home server running 24/7 with 3 TB of storage (one 1 TB 7200 RPM and one 2 TB 7200 RPM HDD) based on Linux. The hard drives on the ...
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Detecting addition or removal of hard drives to RAID configuration

I need to be able to trigger a command to run whenever a hard drive is removed or inserted into a RAID configuration. To detect the removal or addition of hard drives I would usually use udevadm hooks ...
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Asus Motherboard don't have Raid settings

i have asus h310 prime plus in detail in asus site this have Intel® H310 https://www.asus.com/Motherboards-Components/Motherboards/PRIME/PRIME-H310-PLUS/techspec/ and intel h310 support rapid storage ...
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How to migrate primary system drive from RAID array to SSD with Windows already installed?

I currently have an SSD (C:) with Windows 10 installed on it (C:/Windows/*). I also have a RAID 1+0 array of 4 HDDs (D:) that does not have an OS installed. I would like to remove the RAID (D:) ...
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Can't change SATA mode from RAID to AHCI in Windows 10

I am trying to install Ubuntu in dual boot with Windows 10, but after many failed attempts I realized that I have to change SATA mode to AHCI. I have tried literally everything I have read online, ...
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HP Proliant Microserver Gen 8 Unable to see array as disk drive

I'm a bit new to server ownership, but in no means new to IT. I recently got an old microserver from my job, with a copy of Windows Server 2012 R2 and wanted to set it up for NAS or something similar ...
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Shared folder dissappeared on Synology NAS

I recently noticed a Shared folder on our DS218play has disappeared. This has happened after a restart / software update. No user actions were performed. Can't find the folder through SSH either. It's ...
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Should ZFS RAID-Z2 theoretical maximum be 256+2 drives?

For RAID 6 in wiki, the extra priority check bit Q is calculated by shifting of bits. https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_6 Suppose we would like to distribute our data over n {\...
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Which connector does SAS use?

I have a Lenovo D30 workstation I'm using as a NAS. I recently got a few 3TB SAS drives and I'm trying to figure out how to install them. I'm pretty sure the computer supports SAS drives, but I can ...
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Linux Raid5 lost on reboot, superblocks not detected

Edit : Thank you very much Tom Yan, it worked after resetting the array and calling wipefs -a before recreating it. I can’t figure out how to set up my RAID5 array. When I create it, it seems fine but ...
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Recreating a RAID 0 array created using Windows in software

I've reinstalled Windows 11 on a new drive so I have to set everything up again. I previously had a RAID 0 array on this machine, which doesn't seem to have been automatically detected. The drives are ...
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ProLiant D380 G5 - new drives dont work (E200 array controller)

i own a HP Proliant DL 380 G5 for private/personal use. I wanted to upgrade the storage a bit because i only have 2x 500GB HP drives in RAID 1 and 2x 72GB HP drives in RAID 1 My friend had some ...
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dd: error writing to output file no more disk space, Is this normal?

I have a 4 disk NAS configured as a raid 5 but unfortunately the raid recently became unrecognisable, but the NAS boots fine otherwise. I'm in the process of cloning disks so raid recovery can be ...
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How do I reassemble a RAID1 array which was created in OMV5(open media vault) on raspbian buster - RAID config has completely disappeared after update

How do I reassemble a RAID1 array which was created in OMV5(open media vault) on raspbian buster? I have 2 disks /dev/sda/ and /dev/sdb/ which have the following partitions, which look intact pi@...
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Clone Raid 0 hardware array to bigger external disks?

I have a laptop I bought used, has dual Samsung 500gb m.2 SSDs in and Intel RST RAID 0 array. I'm running out of space on it and can't add additional drives. I was wondering if there's a way to clone ...
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Restore missing volumes on RAID -- ARECA/MRAID

Can anyone provide insight on how to bring back lost virtual volumes? None of my drives are damaged, however I accidentally broke one of my virtual volumes and it has caused all three of my virtual ...
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Raid issue after change to raid 6 from 5 and reboot

I'm hoping somebody with some mdadm experience can help me out. I did the following and it causes the raid to not mountable after reboot. Is there any chance that it can be saved? I've used the ...
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Primary GPT table corrupt (RAID-1 and mounted as /home) stopping me reinstalling Linux

Env: Linux TRANQUILITY 5.3.18-150300.59.49-preempt #1 SMP PREEMPT Mon Feb 7 14:40:20 UTC 2022 (77d9d02) x86_64 x86_64 x86_64 GNU/Linux Also OpenSuse Leap 15.3 with KDE Plasma 5 When I run the OS ...
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Hiren's Boot PE, NVMe & RAID - a RAW deal

On HP laptop Windows 11, I booted into Windows perfectly normally, then I rebooted into Hirens Boot PE, opened Aomei Backupper, did not do any action in that application, then I opened Disk Management,...
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Megaraid controller: one slot seems dead

I have a workstation with a raid controller LSI MegaRAID SAS 9271-8i. The problem is that the slot n°4 (with a new hard drive) shows no led activity at all, and the command megacli -LdPdInfo -a0, for ...
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Raid 10 gone - how to rebuild / find informations

Because of another task, i had to disconnect all the raid hdd's from my pc. Shutdown -> disconnect hdd's -> boot -> shutdown -> connect hdd's -> boot -> raid completely lost. mdadm --...
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LSI MegaRaid 9261 8i - raid not present in webios

I'm using since a long time an LSI MegaRaid 9261 8i with 4 drives of 4To each in Raid 10. Every thing was working well until today. the electricity turn down... I have tried to restart my server but ...
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Set up mirroring RAID, all good. Can it be encrypted after the fact?

That's the question really. More out of fun, I reused an older dormant box to be my documents NAS at home. I attached two 2TB external HDDs and set up mirroring RAID. That all went well and I am happy....
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How Do I replace a RAID 5 Disk?

RAID 5 (3 disks) failure on workstation which now boots to emergency shell. I replaced the hard disk (/dev/sdb) but can't restart the array and mdadm shows odd configuration as follows: mdadm --...
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How to read (and backup) files from a Seagate Black Armor 2 bay NAS (STBN8000100) after factory reset

I have a Seagate Black Armor 2 bay NAS (STBN8000100) with two 4TB drives that were running on RAID0. The NAS was only running within a LAN (only a switch, no router) with a static IP address connected ...
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How to restore my RAID5 after mistakenly failing one of the drives?

I have a RAID5 on Xubuntu 20.04, created with mdadm. I failed one of the three drives by mistake. The array is still working, but I get errors or responses I do not understand from my attempts to ...
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RAID with different size HDD with specific partitions?

I have one 5TB HDD and one 6TB that I want to put in RAID 1. However that would make me loose 1tb. My idea was if it would be possible to do RAID 1 but then also have a separate 1tb partition on the ...
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LSI Raid 6 - Consistency Check found inconsistent parity during restore operation

I have an LSI 9260-4i and recently rebuilt my array with 4 all-new 4TB disks in RAID 6. OS is Windows 10 Pro X64, and the firmware and drivers are the latest available. Prior to replacing all the ...
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Frequent write errors to new SSD - Faulty hardware or configuration issue?

I replaced the primary boot drive (SSD) on my Alienware 17 R4 a few months ago after it died on me. Since then, my computer will spontaneously just stop fulfilling commands, and eventually grind to a ...
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Disconnecting windows software RAID disks without requiring a resync

I have a working 3TB software RAID volume under Windows 10 on my primary work machine, physically two 3TB rotating rust disk. The boot volume is a separate NVMe SSD. The RAID volume resynchronisation ...
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How to fix a disk that apparently was part of a mdadm raid0 array?

I can't mount a raid0 array on a server with ubuntu 20.04.3 LTS after an apt-update & apt-upgrade y restart. mount: /storage/r0: wrong fs type, bad option, bad superblock on /dev/md0, missing ...
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Is a self healing triple redundancy RAID array existent?

Data gets corrupted over time caused by heat and radiation. On a RAID 1 array with 2 drives, with two identical files (with the exception of one shifted bit), one can not know which drive is correct. ...
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Migrate existing RAID5 to RAID10 with new disks

I have the following situation: Within my Server, i have a RAID5 and RAID1 made out of 3 x 3TB HDDs. Now i want to migrate the whole stuff to a RAID10 made out of 4 x 1TB SSDs. Actually i have SW ...
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smartctl "Elements in grown defect list" vs. RAID controller "Media error count"

I am using a hardware raid50 with PERC810 controller in my server and recently encountered a metric I am not sure about. Until now, I have been using a smartctl metric "Elements in grown defect ...
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Are there any performance issues with allowing a hard drive to become full if the drive is effectively read-only?

I'm fairly confident that the answer is "no issues," but I'm asking here in case there are any quirks that I'm failing to consider. Context I have a large storage array (on a Linux system) ...
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LUKS on top of BTRFS raid array

How can I encrypt a partition that's btrfs RAIDed? Running encryption on top of RAID is the best practice among a lot of sources even recommended by cryptsetup FAQ (see 2.2). The reason I want this to ...
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Is it possible to create a RAID from only partial disk?

We have a dual boot system where we install firmare on two partitions, additionally we have a data partition. We have two disks on the system and I wonder if we can create a raid for the data ...
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Does Intel RST Smart Response work with a PCIe drive coupled with a SATA HDD?

I purchased a laptop 2 years ago with a 128GB SATA M2 SSD (for the OS) with a 2TB SATA mechanical drive. From factory it was installed with an Intel RST configuration that accelerated the mechanical ...
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How to remove RAID 1 array/information totally from Windows 11

Somehow I'm in a big mess. I'm trying to remove RAID 1 array completely from my Windows 11 but I can't. Here is what I've done so far Went into UEFI (or BIOS) Disabled RAID https://ibb.co/dtHZzb3 ...
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How to properly replace disk RAID1 with uefi boot

im facing situation when i need to replace hdd with uefi boot. Never done before. Standard procedure with legacy boot (MBR) is okay but im not sure how to do that when UEFI is on server. Server have 2 ...
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How can I write independently down either 10Gbe output from a Sonnet Twin 10G Thunderbolt 2 adapter to a network switch?

I have a job coming up where I need to write at high speeds from an iMac and MacBook Pro to two separate RAID units with the write capability of 1250MB/s (DS3617xsII's w/ 12x 16TB EXOS Enterprise HDD'...
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