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Questions tagged [software-raid]

RAID solution handled by the operating system.

Software RAID is implemented in the OS. It uses CPU to handle the RAID setup. It is cheaper than hardware raid. It often doesn't support features which you can find with hardware raid like:

  • hot spare
  • fast rebuilding of an array
  • hot swapping
  • high write throughput

Another problem is that it uses the CPU and memory of the computer to perform all the tasks (hardware raidcards have a special cpu and memory for this task). Therefor generating more load on your system.

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Software RAID on SBS/Server 08

We recently had problems with our SBS 08 server, and we disabled the software raid 1 of our C: Now that everything is back to normal, I wanted to re-enable it in the disk management, right-click on C: -> Add mirror, but it's greyed, same thing for…
Bastien974
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Can I configure RAID 1 with production server running?

I am facing issue configuring RAID 1 with currently running production server (Ubuntu 18.04 LTS). Currently my configuration is sda 8:0 0 1.8T 0 disk ├─sda1 8:1 0 1M 0 part └─sda2 8:2 0 1.8T 0 part / sdb 8:16 0 …
jrnetsec
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can I upgrade soft raid0 to raid10 or raid01? and how?

currently status: 4 disk part 200G each, total 800G using raid0 raid0, md0: sda1+sdb1+sdc1+sdd1 and I want to add another disk part sdf1(>800G) combine with md0 to make a raid10, like raid1, md1: md0+sdf1 so I can replace the 4disks sd[a-d]…
user2919667
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transfer raid 0 array from freenas to windows

I have three disks in raid 0 with some data on it (not mission critical). This pool was created on a freenas installation and I was wondering if there is a way to re-mount the same raid 0 array in windows server. I created three vdisks in my raid…
Michael de Borst
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When you format a RAID array using mdadm do you lose all data on the primary hard drive?

I'm trying to create a software RAID array using my computer, which has 200 GB free space, a 1 TB USB external hard drive, and a 2 TB USB external hard drive using mdadm. These directions instruct you to format the RAID array after creation. By…
Steve Mucci
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Difference between software and hardware RAID 10 if the server suddenly shut down

today I have a question that I can not answer. Our servers are dual power and battery. The operating system never crashes. (thanks linux) Now, I wonder what happens if the server suddenly shuts down? (motherboard, processor?) In this case, if I want…
Dylan
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Windows Server 2012/2016 simulated RAID6 in software with 4 disks

Does anyone know how to emulate RAID6 in software on Windows server using 4 disks? The solution must provide for the failure of any two disks (like RAID-6 in Linux). Thank you, Joe
user308958
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Recover RAID 1 after unclean unmount

I have two drives in my desktop in RAID 1. My computer locked up on me yesterday, so I used SysRq REISUB for a "safe" restart. When the machine booted back up, I realized there was no data on my RAID drives (a few empty directories, but no actual…
Chris
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How many drives can fail in an Xserve RAID in RAID 0+1?

I’m torn between what I know (or think I do) and what Apple’s documentation states. The hypothetical setup I’m considering is what is described as RAID 0+1 in Apple’s documentation for the Xserve RAID, which usually means a mirror of two striped…
kumowoon1025
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Hard disk failure or about to fail Intel RST software RAID-1 volume event log

If any one of the two Hardisk of Intel rapid Storage Technology(IRST) Software RAID-1 is about to fail or already failed, then what event will write in event viewer log and what is the Event ID for that.
Shashi
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LSI MegaRAID 9240-4i & RAID1 (mirroring) on ZFS filesystem

Exist any incompatibility between an existing virtual drive created on LSI MegaRAID 9240-4i SAS/SATA Controller with RAID1 and the ZFS filesystem? I tried to make mirror(2xSATA HDD 300Gb) on freebsd 10.1 release but don't worked. Detected…
S3th76
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3disk in raid 1 using half/half

Im using a mdadm software raid system on my new server which runs 3x120GB ssd drives. Currently, this is the preinstalled configuration that came with the server cat /proc/mdstat Personalities : [raid1] md2 : active raid1 sdb2[1] sda2[0] sdc2[2] …
Stacknerd
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RAID1 on existing CentOS6 Install

I have two 500GB hard drives in my server. Currently, there is no RAID configured, but CentOS6 is installed (as a bare install for now). Is it possible to set up a software RAID-1 so that both drives are mirrored without the need to reinstall the…
Alex Blundell
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What is the correct way to create new raid5 in Linux?

I added some new disks, and tried to create new array, using: mdadm --create /dev/md/2 --level=5 -x 0 --raid-devices=4/dev/sd{a,b,c,g}2 It creates the array, but after reboot - it's gone. What should I do to keep it visible? Also - I read about…
user195086
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Restructuring RAID Array (Windows Storage Spaces)

Our current production server has 6 hd's in a RAID 10 array. Technically it's not RAID, but the new Windows Storage Spaces feature in Windows Server 2012 (think software-RAID). These six are used for storing VM servers only, the OS boots from a 60…
IT Bear
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