Questions tagged [raid]
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.
3,743 questions
3 votes
1 answer
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Reshaping RAID5 to RAID6 stalled
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 ...
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3 votes
1 answer
142 views
RAID 10 not starting after all disks disconnected due to power outage - mdadm software RAID
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 ...
1 vote
0 answers
67 views
Debian 12 server not booting after RAID disk replacement and rebuild on Hetzner
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, ...
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1 vote
1 answer
157 views
Ceph with RAID-only controller - how to configure drives?
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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1 vote
1 answer
163 views
Broadcom MegaRAID 9440-8i. "Error 10" in Win. "Failed from megasas_init_fw 6936" in Linux. No Broadcom RAID configuration item in the BIOS
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 ...
2 votes
1 answer
115 views
Unable to replace missing disk in degraded array (PERC H740p): Operation not allowed
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 ...
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1 vote
1 answer
95 views
Software RAID5 single drive failure but fails to start array
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 ...
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1 vote
0 answers
95 views
Write Errors SAS SSD with Adaptec ASR-71605 Controller on Supermicro Server
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 ...
0 votes
0 answers
155 views
Lenovo server stuck on Avago megaraid driver health utility
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 ...
0 votes
1 answer
159 views
Devices randomly dropping from mdadm RAID5 array
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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6 votes
1 answer
180 views
How can I recover from a failed disk on lvmraid RAID 6?
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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0 votes
1 answer
234 views
Adding disks and expanding RAID 10 - Dell
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 ...
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0 votes
1 answer
73 views
Fujitsu RX2540 M2 max disk size
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, ...
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0 votes
0 answers
67 views
Can you swap different RAID arrays in a single drive enclosure?
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 ...
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0 votes
1 answer
73 views
Filesystem got unmounted after full OS drive on OpenMediaVault7 (Debian 12)
I'm new to this page and im not sure where to get help. I hope this would be an appropriate place. TLDR: Docker overflowed server OS storage, after doing docker prune, i realised that my mounted ...
1 vote
0 answers
167 views
Avago MegaRAID SAS 9361-8i - RAID6 - Disk UGood foreign not in raid anymore how to fix?
I run a RAID6 with 24 Harddrives on a rhel9 server. On a routine check I discovered the RAID has not its full volume. And dig deeper. There was a ongoing CC stuck at 49 % since 3 days and one ...
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0 votes
0 answers
75 views
Is there a way to set VD number directly during raid creation using storcli or perccli?
Some background: The ordering of the vd numbers assigned to the virtual disks in the controller determines the order of the names in /dev/sd*, so the vd with the lowest vd number appears as sda and so ...
1 vote
0 answers
209 views
RAID 530-8i PCIe 12Gb Adapter for Linux Based OS
I am repurposing a Lenovo ThinkSystem ST250 with RAID 530-8i PCIe 12Gb Adapter running 2 x 960GB SSD SATA 6Gb ThinkSystem drives in RAID 1 on 0 & 1. I had VMWare running on windows server on this ...
-1 votes
1 answer
102 views
Raid: Old concept o SSD
Is RAID becoming an obsolete concept with the rise of SSDs, or does its role shift from performance enhancement to redundancy and storage capacity in modern systems?
0 votes
0 answers
120 views
9560-16i doesn't see U2 drives
Good day! I have a Supermicro 216BE1C-R920LPB chassis with Supermicro X11DPi-NT motherboard and BPN-SAS3-216EL1-N4 backplane, BROADCOM 9560-8i and 9560-16i, four Samsung PM9A3 U2 drives. Drives ...
1 vote
0 answers
107 views
Non-destructively resize software raid to use free space before and after existing partitions
I have a four-disk Linux software RAID, configured as RAID5: $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 3.6T 0 disk └─sda6 8:6 0 3.6T 0 part └─md10 9:...
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1 vote
0 answers
46 views
Configuring RAID on IBM Power S812L Without VIOS Access
I am working with an IBM Power S812L (Power8) server and need to configure RAID. From my research, it appears that RAID setup typically requires Virtual I/O Server (VIOS). However, I currently do not ...
5 votes
4 answers
540 views
Linux Software RAID10 (SSD) become horrible slow
I run a Supermicro server (2x AMD EPYC 7282, 128 GB) with 8 drives for over 5 years now. The server runs Debian Linux and serves a lot of virtual machines with a mixed workload (Mail, Nextcloud, ...
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4 votes
1 answer
309 views
Recover Synology mirror raid partition? Can't read superblock
I had a Synology device that failed (power loss / blinking blue led) and after that I wanted to recover the data from my Raid partition (ext4, 2 drives in mirroring). I installed one of the drives in ...
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0 votes
1 answer
45 views
Importing failed Dell H310 RAID1 on different hardware
I have a Dell PowerEdge R320 with an H310 mini controller and four drives / two RAID-1s. The first RAID-1 recently reported a failed drive. I tried replacing the drive with a freshly wiped one, same ...
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0 votes
1 answer
250 views
Dell PERC S150 Raid-1 Confusion
I am having an issue with our primary server's RAID configuration. This is a Windows 2022 Server that I setup a few years back, and I thought I set it up as a RAID-1 mirror with 2 physical hard drives....
4 votes
1 answer
805 views
Issues Enabling Storage Spaces Direct (S2D) with RAID SSDs on Windows Server
I am facing issues while enabling Storage Spaces Direct (S2D) on my Windows Server setup. Here are the details of my setup and the problem encountered: Server Setup: Server 1: Domain Controller ...
1 vote
0 answers
82 views
What are the possible RAID failure statuses with mdadm on Intel Software RAID?
I have an Intel Xeon-based system running Red Hat Enterprise Linux 9 with an Intel Software RAID configured. I'm using the mdadm utility for managing and monitoring software RAID devices, and I need ...
2 votes
1 answer
243 views
How to Configure RAID6 on ASUS RS720A-E12-RS12 with Broadcom MegaRAID 9560-16i?
I’m trying to set up a RAID6 array on my ASUS RS720A-E12-RS12 server. The system is equipped with a Broadcom MegaRAID 9560-16i controller and 12 NVMe SSDs (Intel DC P4610 1.6TB U.2 Series ...
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1 vote
1 answer
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Does btrfs RAID5 or RAID6 have benefits over btrfs on RAID10? [closed]
From what I understand, btrfs is implementing RAID 5 and 6 support after having had RAID 0, 1 and 10 support stable for quite a while now. btrfs already has check-summing and background scrubbing. ...
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-1 votes
1 answer
157 views
Hotswap Smart Array P410i controller, 8 ST9300653SS disks
I need to replace a failed disk in an HP ProLiant DL380P Gen6, Smart Array P410i controller, with eight ST9300653SS disks 300GB 15K. I ordered the same disk. I found information that the controller ...
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5 votes
3 answers
2k views
New 90 TB/10 drive RAID 5 array state: clean, degraded, recovering. Why, and how long will it take to recover?
I've just created a new RAID 5 array in in Debian with mdadm: mdadm --create --verbose /dev/md0 --level=5 --raid-devices=10 /dev/sd[bcdefghijk] & mkfs.ext4 /dev/md0 and im confused as to why its ...
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0 votes
0 answers
69 views
Ubuntu RAID1 won't boot
This is a machine I am remote from, so cannot do the obvious (look at what is happening in a console). The machine has 4 drives: sda, sdb, sdc, and sdd. sda and sdb are configured as one software ...
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6 votes
1 answer
2k views
Should I use a hardware RAID controller with my NVMe SSDs for a Hyper-V server hosting production VMs? [closed]
I want to set up a Hyper-V server to run four production VMs: a Linux database server (HANA), a Windows Terminal Server, and a couple of Windows 10 VMs. Up until now, I’ve always used SATA SSDs in a ...
1 vote
0 answers
82 views
root disapperead after resizing partition can't boot anymore
Hello i completely broke my server now after trying to resize my /boot to upgrade my OS i shrank my root directory and tried to increase my boot folder but that didn't work really. It gave me some ...
user1151912
1 vote
1 answer
192 views
Replacing RAID1 disk - partition sizes differ
One of my RAID1 disks failed recently. I've purchased a replacement, connected it up and formatted it as Linux RAID using cfdisk. New drive is /dev/sdc Old drive is /dev/sdd They appear to have the ...
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2 votes
1 answer
42 views
ut swapping two disks between RAID 1 servers via hot-swap: How to avoid RAID failure?
👋 I have two servers with identical configurations, each with 8 disks set up as RAID 1 pairs (disk #1 is mirrored with disk #2, disk #3 with disk #4, and so on). Both servers support hot-swap, ...
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4 votes
2 answers
427 views
Best way to replace a failing hard drive
I have a four drives in a RAID 5 array. One of the drives (sdb) show a lots of errors and the array has high latency during access. I currently have one new disk and another one is commanded. As part ...
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1 vote
0 answers
146 views
Drive failures on Lenovo ThinkSystem SR590 and why its a "Withdrawn Product"?
our small data center faces 1 or 2 drive (SSD, SATA & SAS) failures every year in RAID-1 and RAID-5 setup on Lenovo ThinkSystem SR590 servers. Today while I was searching the internet about the ...
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1 vote
0 answers
54 views
Problems with FC630 and FD332
We have acquired a new FD332 and now we use one FD332 for each FC630. But I'm not able to configure the RAID, the disks are in foreign state and when accessing the configuration management I receive ...
3 votes
0 answers
205 views
Migrating RAID1 to a bigger disk while expanding partitions
I need to move a server mdadm RAID1 setup on a new pair of bigger disks, from 2TB to 4TB. The disks are GPT with 4 partitions: /dev/nvme1n1p1 /dev/md0 biosboot /dev/nvme1n1p2 /dev/md1 swap /dev/...
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3 votes
1 answer
355 views
How do I completly remove "removed" disks from mdadm array
Start of the problem I have a dedicated server on hosting provider and recently my node exporter detected high disk io saturation on my RAID 1 array /dev/md3. I have checked smartctl for my hard ...
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1 vote
1 answer
439 views
Ubuntu 24.04 - LVM - RAID5 - Different Disk Sizes - Stat & Report
I want to setup a RAID5 using LVM, with different disk sizes: 2 x 2TB 3 x 1TB My first question is, what is the best/secure setup to do with my actual config: Partitionning the 2TB into 1TB/partition ...
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2 votes
1 answer
581 views
UEFI Secure Boot from SSDs on RAID controller does not boot if secure boot activated
I have a severe problem with a server equipped with a RAID controller on the PCI bus. This is neither an OS-specifc (Linux/Windows) nor hardware-specifc (RAID vendor) problem: Machine has two NVMe ...
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7 votes
2 answers
128 views
Can I move disks from one HP DL160 Gen9 Server to another DL160 Gen9 on a RAID 5 setup without data loss?
Would it be possible to move disks from one HP DL160 Gen9 Server to another DL160 Gen9 on a RAID 5 setup with 4 disks in a straight forward manner? We have experienced a sudden failure which started ...
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1 vote
0 answers
95 views
areca raid controller finding temp values
Is there a way to find a temp value? Inherited a system that was beeping couldn't figure out why, finally dawned on me to check the raid, it was an areca raid controller. figured out how to get the ...
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4 votes
2 answers
3k views
mdadm: Value "arch1:2021" cannot be set as devname. Reason: Not POSIX compatible. Value ignored
I plugged an old raid ARRAY to a new system and get this error on anything that I try to do with mdadm. # mdadm --detail --scan ARRAY /dev/md/arch1:2021 metadata=1.2 UUID=c4c7cbde:5f6913a9:eb1c82ff:...
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2 votes
1 answer
289 views
Increase useable size of logical drive in ADAPTEC 6405E RAID 1 array using ARCCONF, after increasing physical disk size
I have just upgraded pair of SATA SSD from 500GB to 1TB in adaptec/microsemi 6405E RAID1 array installed in a Windows Server 2012 machine, by hot swapping disk1, waiting 30 minutes for it to rebuild, ...
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0 votes
1 answer
130 views
Pacemaker colocation constraint prevent fault-tolerant resource from running
This is a follow-up of this question on super-user which, in hindsight, might have been better in server fault. The problem I have there might be due to the problem I am going to describe here. I am ...
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0 votes
1 answer
344 views
Linux Software RAID MD partition are gone, how to recover?
after a deadly electricity fault we got a Linux MD software raid10 gone. It seems that all 4 devices cannot see anymore the GPT partition. The partition was created with this scripts: parted /dev/sda ...
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