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RAID, an acronym originally for Redundant Array of Inexpensive Disks (today usually interpreted as referred to as Redundant Array of Independent Disks), is a technology that provides increased storage performance and reliability through redundancy by spreading data across multiple disks using various algorithms (RAID-levels). RAID can be implemented in hardware storage controllers, or in software, usually as operating system/kernel features.

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This might look simple, but it’s turned into a 3-day rabbit hole. I have two Samsung 2 TB SSDs that were configured in a RAID 0 array using AMD RAIDExpert2. The original PC is gone, and I want to wipe ...
FatalxE's user avatar
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I recently grew my RAID5 to a RAID6, but the reshaping afterwards stalled to a 0K/sec speed. Here's what I did. I added a spare to the RAID: mdadm --manage /dev/md0 --add /dev/sdc1 Then, I grew the ...
ThaDrood's user avatar
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I have a server and a connected JBOD/DAS with 4 16TB hard disks and a single 1TB hard disk. On the 1TB disk I installed Proxmox with Debian 12. Inside Proxmox, I then created a virtualized Arch Linux ...
F. Alessandro's user avatar
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I have a Debian GNU/Linux 12 (Bookworm) server with a custom kernel running on Hetzner. Recently, one of the disks in my RAID1 setup failed, and Hetzner replaced the faulty HDD. After the replacement, ...
jinson's user avatar
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I need to set up Ceph (via Proxmox) on three old PowerEdge servers. The disk controllers in these systems do not have an IT or HBA mode available, even through reflashing. Budget for this is $0, and I ...
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Situation: The Broadcom AVAGO 9440-8i RAID controller is detected by the motherboard and the operating system, but the driver is not working. Installing new driver versions does not work. The StorCLI ...
Юзер Анонимус's user avatar
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I have a raid 5 volume that had a disk failure. It is now degraded, and the failed disk is marked as missing: ----------------------------------------------------------------------------- DG Arr Row ...
Remember Monica's user avatar
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I had a SuperMicro SC825 go down recently. I wasn't present for it's failure but have been able to pull the last RAID status from a remote log. It's configured with a software RAID5 array with 6 ...
bias's user avatar
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I am stumped about what might be causing some sporadic write errors I've been seeing after making a change to my file server, hoping someone here can help narrow down the root cause. My first ...
Liquid Plasmas's user avatar
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This is a Lenovo ST550 ThinkCenter with a RAID drive system that's been running Windows Sever 2016. I just rebooted it and when it boots I see the UEFI boot screen, then it switches to the window ...
Jim Stewart's user avatar
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I could use your help with this, I've got an issue with the RAID5 array in my server, where I'm getting seemingly random DeviceDisappeared and NewArray events (always in the same second) from mdadm (...
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I'm in a bit of a hairy situation trying to get my NAS back in running shape again after a drive failure. My setup consists of 6 HDDs and an M.2 NVMe, all using LUKS for encryption. In addition, the ...
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Dell R540 and PERC H740P Adapter (Embedded) with configured: RAID 10 1 Virtual Disk, size: 2.7 TB 6 x SSD Micron MTFDDAK960TDD 960 GB (2 free slots left) Windows 2019 Server Core with Hyper-V VMs I ...
sunnyluk's user avatar
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I try to use a 4 TB SSD with the EP400i RAID Controller. In the RAID Controller Configuration in the BIOS the new disk is shown as JBOD and not as an available disk. Could it be, that the reason is, ...
HGA's user avatar
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New, simplified version of my question: Is there a way to retrieve the data on drives that have been removed from a RAID array in an enclosure that is now being used for a different RAID array? Or to ...
Phil Goetz's user avatar
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