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 tell if a hard drive with Windows was used in AHCI or RAID mode?
I have a computer with a corrupted windows installation that will not boot into the OS. I am trying to fix the operating system, but I am not sure at this point if the drive was using RAID or AHCI. ...
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Repairing Windows installation that can't boot
Background:
I have an Asus UX51VZ that will no longer boot into Windows. This was my dad's primary computer. I took it to a computer shop so they could fix the fans that came on at full speed all the ...
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How to make RAID-1 (almost) full bandwidth when processing the sequential write/read?
When I read OSTEP chapter 38 about RAID, it says in p10:
The 1/2 penalty assumes a naive read/write pattern for mirroring; a more sophisticated
approach that issued large I/O requests to differing ...
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Can I swap between two RAIDs on one NAS?
Weird question, confuses Google, not sure where to ask. I want to buy a Synology DS923+ NAS enclosure and load it up with 4 RAIDed drives. Then I'd like to remove those 4 drives and put them away, ...
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How to extend Disk Space with LVM on Linux Server: Limited Hardware, High Capacity Needed
Regarding LVM Partition
I am using a Linux server machine (IBM) for a genome assembly task. The OS is Ubuntu, version 22.04.2 LTS (Jammy Jellyfish)
The machine has a memory capacity of 248 GB. There ...
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Linux installation, how to partition for install with a raid setup?
This question is about how to install Linux and create a raid setup as part of the installation. I am trying to install Debian 12, although this question is probably quite generalizable.
As part of ...
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Installing Linux (Debian) with software RAID
As far as I am aware, it is not possible to install Debian 11 directly onto a software raid partition, because this is a "chicken-egg" problem.
To explain: the software raid requires some ...
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Is it possible to make a RAID of multiple WD elements external drives
I have about 10 2tb WD Elements 2.5 WD green external hard drives (WD20NMVW). I want to know if I could make something useful out of them.
The best would be to be able to use them for a data archive ...
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Best way to use Windows' RAID 1 to have an hot backup
I'm looking for a way to direct Win10 Pro RAID system to direct the reads to the fast drive in the mirror
I'm on Windows 10 PRO and have regular (but not too frequent) backups of my system.
The system ...
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Can I setup LVM raid1 to mirror one physical disk onto another?
I have two HDDs, I'm planning on only using one (with NixOS) and the other one should be a mirrored backup, I've had many problems trying to set up a RAID 1 with NixOS and the only documentation I can ...
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RAID server went dark
So I have a Gigabyte 277x MB with a Intel i5 that has been running 2 software raid arrays on Ubuntu for 3 years without issue. Last night I turned off server to move it and clean it and then turned it ...
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How do you decode SAS "Sense" or "CDB" data reported by an HBA or RAID controller?
My Broadcom-based RAID adapter (Cisco UCSC-RAID-M5HD) reported the following "Unexpected sense" error:
Unexpected sense: PD #012 = Port 0 - 7:1:9No addtional sense information, CDB ...
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Unable to format drives previously used in RAID array - weird 15bit mode
I am clearing out a load of old hard disks, and reformatting them to ensure they are blank. I previously had an x86 PC with BIOS RAID running Fedora and several sets of 4 drives which IIRC were RAID 0+...
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Single SSD in RAID10 array has Wear_Leveling_Count issue
I run a RAID10 machine with 4x Samsung 480GB SSD's. The drives are of identical age.
3 of the drives have a Wear_Leveling_Count 090, but one is now as low as 003. I don't understand why one of the ...
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Mdadm raid 5 array is half the size than expected
I crated a Raid 5 array with mdadm consisting of 4 x 4TB drives, i was expecting the array to be 11-12Tb in total space.
But after building the array I noticed it is actuall half the size of the ...
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