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 do I migrate system folder and app settings to new QNAP volume?

I currently have a RAID5 with ~12TB of capacity consisting of: 2 6TB disks 1 14TB disk (only uses 6TBs) All WD Reds QNAP T-651 (6 bays) - Firmware 5.0.1.2248 - 8GB Memory The inconsistency in drive ...
Poul's user avatar
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Slow hardware RAID0 write performance with 26 drives

I need a storage server with a total disk space of at least 400TB and write speed (preferably) well above 2GB/s for a scientific experiment which will transfer files of the size about 10GB via a ...
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Intel RSTe RAID drives appear in BIOS but not in Windows

I have a HP Z620 workstation running Windows 10. I moved 4 HDDs into it from an older HP Z420 - these form a RAID volume that was working fine with Intel's RSTe on the old machine. On the new machine ...
nerdfever.com's user avatar
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2 answers
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How to get new hard drives into a QNAP NAS and transfer the old data from static volume

I want to make sure this plan works. Existing setup: 2-bay QNAS NAS drive containing two 1TB drives. No RAID. One drive is a "Static Volume" and one is a "Legacy Volume" (from an ...
Andrew Lazarus's user avatar
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Clean up left-over around a RAID5 coming from a QNAP NAS

I just moved a 12TB RAID5 (4 disks of 4TB) from my QNAP NAS into my Linux Server (/dev/md0), and I noticed that there are three "left-over" partitions on each disk (/dev/sd*1, /dev/sd*2, /...
Fratt's user avatar
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Repairing Lost Partitions In RAID Array

I have a pair of SSDs in a RAID 1 array, managed by a Dell PERC H710 Mini. The disk backplane was replaced and the virtual disk disappeared, it has since reappeared but contains nothing (there was an ...
James Conway's user avatar
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2 answers
448 views

How much space should I use in a RAID-1 (mirrored) disk partition to avoid a "partition too big" issue

We're having issue with a RAID-1 (mirrored) setup when replacing disks. Our current setup has two 1TB disks nearing end-of-life and we wanted to replaced them with two other 1TB disks. The issue is ...
leftcursor's user avatar
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Upgrading WD Mycloud EX2 Ultra NAS Drives

I have a Mycloud Ex2 Ultra with 2x2TB NAS drives configured in RAID 1, with a total of 1TB of storage used. Recently tried to upgrade the drives to 6TB because I intend to use the NAS for much more ...
Mkjoiner's user avatar
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259 views

HDD visible in BIOS and WD Dashboard, but not in Win10 Disk Manager

I have two WD Blue and two WD Red drives. All were working perfectly fine on my Win10 PC up until I have reinstalled the system. Now I only see two WD Red drives. When I connect these (Blue) drives ...
WojtusJ's user avatar
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System failure shortly after md raid growth and no md superblocks on added disks

tl;dr; I tried to grow my raid array by adding 2 10 tb disks to an exsistant 4x4TB raid 5 array, had a failure with the system disk (not part of the raid) shortly after the growth finished and after ...
Sam's user avatar
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Mount Btrfs raid 5 from failed ReadyNas 104 on Linux - aka how I restore data from my ReadyNas

After about 7 years my ReadyNas finally failed, I would expect from Neatgear detailed recovery instruction, but I read dozens of threads - my problem is not uncommon, but solution was not found. After ...
Yarick Yermak's user avatar
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1 answer
394 views

Why MDADM removes disk with no errors from array and marks it as failed

I have a Raid6 that keeps automatically marking a disk (/dev/sdi) as Failed and removing it from the array even though the long test does not show any errors: Test results sudo smartctl -l selftest /...
Jorge's user avatar
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Trying to rehabilitate an old PC, encountering RAID error

I have a computer that I aim to turn into a server, but I am running into an error where I can't even reach the BIOS setup screen. Summary. Trying to boot PC, encounter error: Detecting arrays ... No ...
Zico's user avatar
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-1 votes
1 answer
111 views

From no raid to raid 1 without dataloss

So im currently using a single 8Tb HDD plugged into my Laptop. I was thinking about buying an Icybox and another 8Tb HDD and then using the hardware raid 1 of the icybox. Could that be achieved ...
NLion74's user avatar
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One slot keeps failing in a RAID-6 array, before and after RAID card swap: does the backplane have to be replaced?

We have a 12 drive Supermicro 12U server SYS-6029P- WTRT with X11DDW-NT motherboard that was upgraded to a 7332895-LSI-MR-9361-16i RAID card so it could go from 8 to 12 SAS disks. The drive in slot 3 ...
J Klein's user avatar
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Where can I see Intel® Virtual RAID on CPU logs on Windows Server 2019 and check if there is any error on any Raid 1 disks?

I have the below system and i noticed that it is repairing the raid right now. I want to be sure that there is no bad sectors on any of the raid disk but I don't know how can I do that Here all the ...
Furkan Gözükara's user avatar
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1 answer
613 views

Install NAS OS in data disk array instead of separate disk

I would like some help with my personal NAS setup. Instead of installing the NAS OS in a separate disk, as most NAS OS documentation suggest, I am looking to install it in the data disk array instead, ...
Marwi's user avatar
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RAID 10 Failed after BIOS flub. Any chance at recovery?

System Specs (about 11/12 years old): Asus Maximus IV Extreme-Z i7-2600K 32MB DDR3 Windows 10 Pro - 21H2 Samsung 980 Pro 1TB (OS) Toshiba 7200RPM 5TB (Movies, Music & other media) 4x Seagate 3TB ...
Christopher Hill's user avatar
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1 answer
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Finding files on a RAID5 ext4 filesystem associated to bad blocks on one HDD

I am running a NAS with Openmediavault 5 and I have set up a RAID5 (with mdadm) with 3x 5TB WD Red harddisks back in the day (see details below for mdadm output). I am using the whole disk as member ...
bash0r1988's user avatar
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205 views

How to deal with LVM RAID mismatches – are there benign causes?

I employ LVM with raid1 volumes both at home and at work. One of the disks in my home server has been starting to report S.M.A.R.T. selftest read failures. Looking for ways to investigate the severity ...
Magnus Holmgren's user avatar
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Disabling RAID1 on a 2x1TB NVME Ubuntu Linux setup

I'm sorry if this is worded weirdly as I'm quite new to dealing with RAID, apologies for that (any edits would be appreciated if this is worded wrong). That out of the way, on my remote dedicated ...
Nicholas Yoannou's user avatar
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875 views

Debian - Detecting and mounting a logical volume/softRAID array

I have an HP Proliant ML10 v2 server with a B120i raid controller. Server has 5 disks, 2 logical volumes configured via HP Smart Storage Administrator (4x 3TB drives in RAID 0 is the first logical ...
boog's user avatar
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RAID - install on an existing system

I have a running system, BIOS is set AHCI, no raid drives. In this system I have two 4TB storage only drives, no OS, and they run independent. I would like to mirror these two 4TB drives. RAID 1 a. ...
yegnal's user avatar
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1 vote
1 answer
5k views

How to install GRUB EFI to RAID1

While configuring a new server, I try to install the Debian Linux Buster at mirrored disks /dev/sda and /dev/sdb with uEFI. I tried various combination: var1: /dev/sda and /dev/sdb - > /dev/md1 (...
schweik's user avatar
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1 answer
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Retrieve datas from an old Lacie RAID0 / JBOD array

I've had like 10 years ago a Lacie external USB 1TB hard drive. One day it stopped working properly and it turns out that the internal electronic was gone. Inside it I found two identical 500GB ...
Joe Mauri's user avatar
3 votes
1 answer
189 views

How much space does a Linux software RAID1 REALLY occupy on its component devices?

A precise answer to this question is important when shrinking the array and its components. As an example, I have a RAID1 /dev/md0 set up on two partitions, /dev/sda1 and /dev/sdb1. Both fdisk and /...
Marcin Owsiany's user avatar
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1 answer
2k views

Determine why drive was removed from software RAID array and rebuild safely

I have a fairly large Linux software raid6 array, with 16 devices. Recently I noticed that a drive appears to have failed out of the array: $ cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [...
stiltzkin's user avatar
1 vote
2 answers
4k views

Can I create a RAID 1 array with a drive that already has data?

I am moving an IDE drive from a customer's old desktop into his new one. I want backup the old drive (drive 1) to a new drive (drive 2) before moving it to the new computer. Afterwards, I want to ...
Cardinal System's user avatar
2 votes
1 answer
3k views

Failed raid1, how to add a new disk with mdadm?

I have a home raid1 with 2 disks and one of them just failed (lightning strike on the house). I'm really unfamiliar with mdadm so I'm asking before doing anything stupid. I can hot-plug a new HD on ...
dargaud's user avatar
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1 answer
479 views

How to install Debian on an encrypted lvm located on RAID using Intel Rapid Storage Technology?

I was preparing the PC-based NAS system. The system uses 4 HDs in RAID 5 configuration. I wanted the system to boot also from RAID, so I have selected a motherboard supporting the Intel Rapid Storage ...
wzab's user avatar
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0 answers
592 views

Desktop PC with RAID won't boot

I'm trying to fix my dads PC (Windows 10) being on holiday at my parents place. He has a RAID Volume installed, built of 2 SATA discs where at least one disk seems to be corrupt - it makes an ugly ...
Barnabeck's user avatar
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0 answers
930 views

PC needs to reset bios every time it starts

EVERY TIME I start my custom built PC this appears. I have no clue at all but it may have something to do with a win11 update. To boot into windows, I'll have to go into bios by F1, load my saved ...
Zyleyus's user avatar
2 votes
0 answers
792 views

How to move a Storage Space to a new computer?

Previously, I had installed Windows 11 Pro on a 240GB boot SSD. In addition to the boot SSD, I also had 4x1TB disks connected, configured in Windows as a Storage Spaces RAID5 pool. My boot drive ...
ebopalisesy's user avatar
0 votes
1 answer
1k views

Why is Storage Spaces created in GUI slower than when made by Powershell?

I created a Storage Space on Windows 10 using the Storage Spaces GUI and found that the read/write speeds are very slow. A dynamic stripe created in Disk Utility is about 3x faster. I repeated this ...
Elliott B's user avatar
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Hard drive shows as "uninitialized" in my NAS (Linux) but is fine in Windows7

My NAS (QNAP) has had issues with seeing / not seeing 2nd disk of the RAID which I have located to a dodgy SATA cable. I have replaced the cable and the disk appears to be fine and recognized etc but ...
Mark's user avatar
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-2 votes
1 answer
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Weird interposer cable for Alienware 18 HDDs. How can I use my HDDs on a normal PC?

Sooo I'm trying to recover my HDDs from my fried Alienware 18 laptop. Since my warranty expired the manufacturer has disowned me and has been absolutely no help. I took the computer apart and pulled ...
SlapsPeopleWithTunaRandomly's user avatar
-1 votes
2 answers
400 views

Unwanted, surprise device mapping causing problems with linux raid

Original title: Unwanted, surprise LVM disk mapping causing problems with linux raid I've done linux raid on ubuntu for almost a decade but never messed with LVM although I'm vaguely aware it exists. ...
user1169420's user avatar
0 votes
1 answer
25 views

RAIDXper2 one drive is not included anymore

I have had RAID10 for 2.5 yrs now. It was working last time I checked (months ago). Today I found the raid is in critical state and one drive (0 0) shows "Failed Offline" but in the disks ...
Boppity Bop's user avatar
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While using RAID 1 do all drives show up as one?

If no, how do people run synology in RAID 1 and it only shows 1 bigger drive. I'm a bit new to this.
PyCoder01's user avatar
1 vote
0 answers
901 views

Why am I getting 4x transfer speeds using SMB to NAS RAID when compared to the very poor FTP rate?

When transferring any size or amount of files to NAS RAID via FTP the transfer rate is abysmally slow at 3MB/s. When I transfer same files across a SMBv1 connection I can achieve 11.3MB/s. Given the ...
ijj's user avatar
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1 vote
4 answers
2k views

BitLocker on Intel RST RAID controller?

I have mirror RAID based on Intel Rapid Storage Technology. I want to use BitLocker on RAIDed, non-system partition. The general BitLocker rule is "Hardware RAIDs are supported, software RAIDs ...
JRr's user avatar
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0 answers
197 views

Change 2 512Gb SSDs NVMe in Raid0 (1Tb total) to one simple SSD of 2Tb, is it possible?

Sorry for my bad english I'm french, I will try to be as understandable as possible. I wanted to add more space to my Alienware m15 R4 PC laptop, I knew it has 1 terabyte of storage and that there was ...
Alan's user avatar
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0 votes
1 answer
270 views

How to remove raid information from a disk drive or disk image

One of the drives in a (Intel fake-)RAID array in one of the computers for one of our tools has failed, the other is showing signs that it may be failing as well (bad blocks, SMART indicates lots of ...
dwidmann's user avatar
1 vote
2 answers
3k views

How to identify physical disks in Linux RAID

Is there a way of reliably being able to tell which physical drive in a RAID relates to the software device name given to it by the OS? I have a RAID5 array of consumer-grade USB disks (and one spare) ...
TommyPeanuts's user avatar
0 votes
1 answer
342 views

Is JBOD or striping better for lots of small files?

I have a server in multi-disk configuration using LVM-on-LUKS in JBOD mode. But I notice in htop that the kernel time in CPU usage is (un)usually very high, and in iotop the jbd2/dm-5-8 and ...
phuclv's user avatar
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1 vote
2 answers
2k views

Transfering mirrored disks to different computer

I had two 3TB HDDs on my old computer. These were setup to be mirrored using Window's Disk Management util. I am now trying to use those two HDDs on my new computer. I plugged them in using the ...
valegians's user avatar
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0 answers
195 views

Hard drives only showing half their capacity - no unallocated space - had been used in Windows pool ("raid")

I sincerely hope someone has any kind of idea, I have been trying for days to solve this problem. I have 4x 16 TB Toshiba hard drives running in my Windows 10 PC and plugged in directly over the ...
Amar M's user avatar
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0 votes
0 answers
249 views

Expand RAID10 storage on Perc H730?

I have a server I built, and one of the components is a Dell PERC H730 raid controller. I have an 8 disk RAID10 array, and I'd like to replace the disks one by one and then expand the array. The old ...
Andy's user avatar
  • 293
2 votes
1 answer
14k views

Asus Z690-PLUS WiFi - NVMe RAID drives not showing up s boot device and can't enable XMP

I have been through almost a month of hell now with Asus support (which is the biggest embarrassing idea of a support help desk as there could be unless you need to know how to turn on a PC and the ...
Arvo Bowen's user avatar
1 vote
2 answers
413 views

clone failing drive without losing redundancy on Synology NAS

I have a Synology NAS (DS416play running DSM 6.2) configured as SHR with 1 drive redundancy. One of the drives has been flagged as failing but is not yet showing any kind of errors. I could simply ...
jhnc's user avatar
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