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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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Server Config Software Raid Slow Read

I have 6x WD Caviar Black 1,5 TB in Software RAID 10 / 1 / 0 (Centos 6.2 / mdadm) cat /proc/mdstat Personalities : [raid10] [raid0] [raid1] md0 : active raid1 sdf2[5] sda2[0] sdb2[1] sdd2[3] sdc2[2] sde2[4] 1023988 blocks super 1.0 [6/6]…
user1015314
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Software RAID setup questions

I would like to set up a server at home that will have several roles, but the primary and most critical role would be a file server. It will host family photos and videos among other things that I do not want to lose under any circumstances. I've…
jdickson
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Install sw RAID 1 on production server from single disk?

Is it possible to install software RAID 1 on a single disk Debian server without erasing/format the data on the original disk? What approach would you recommend?
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Hard drive performance in small-sized server+RAID 5

Disclaimer: I'm an undergraduate intern and this is my first server build I've been asked to build a small server for our team around the office. We are trying to maximize space (our motherboard has room for 6 SATA hard drives) and hopefully get as…
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recovering data from raid1 component disk

Need to recover data from raid1 component disk using ubuntu live usb disk. The existing software raid was broken. After many attempts, I removed degraded raid setup from BIOS but ubuntu live could not detect filesystem on any of the two component…
thevikas
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How reliable is CentOS 5.x RAID 1? I'm considering the SuperMicro MicroCloud product which has everything i need except for hardware RAID

The SuperMicro 3U blade server looks very promising - MicroCloud! If i configure RAID 1 on the 2 SATA drives in each of the blades, how would that work out in terms of reliability? Compared to 8 1U servers with hardware RAID, the price difference…
andy318
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Shrink windows server 2008 software raid

I have a windows server 2008 with 5*2TB disks in a windows server software raid 5. I want to shrink the volume down to 3 disks and use the other two disks elsewhere but can't find a guide on how to proceed. Does anyone have any advice on how to…
xeet
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Software Raid 5 in Enclosure - Server Crash - Hope?

I'm a software guy. I have inherited a Windows 2008 server that had a 4 disk raid enclosure (one of those Rosewill ones from NewEgg I think) connected to it via eSata. The Windows server was maintaining the raid using its native software raid…
Scott Davis
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Forgot to create a second RAID for swap partitions in Software RAID 1. Will it work?

I have a Ubuntu 11.10 headless machine setup with Software RAID 1. It has two drives, each drive has a main boot partition (sda1 & sdb1) and a small swap partition. I created a raid for the boot partitions (md0) but not for the swap partitions.…
Arwen
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Bandwidth efficient software RAID

I have this crazy idea .. that might just work if I find my missing piece Take network with 40 windows workstations (on 24 hours) Each machine uses 20 GB out of 500 GB capacity Install free copy of iStorageServer on each one Create iSCSI target for…
Tomas
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Redundancy on the Freenas install itself?

I'm wondering what kind of redundancy I can put in place for the Freenas install itself. If the drive that Freenas is installed on fails, does that mean all my raid volumes are gone since its all software based? I think my motherboard has a raid…
AdamB
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Allignment of ext3 partition on LVM RAID volume group

I'm trying to add a partition on a LVM that resides on a RAID6 volume group and fdisk is complaining about the partition not residing on a physical sector boundry. My question is, how do you calculate the correct starting sector for a partition on a…
John P
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mdadm scheduled check

I now have several devices that start the monthly mdadm scheduled check. I can let them all run monthly, stagger the checks, or disable them completely. I had the misfortune of several disks turning up bad this month causing a few arrays to run in…
erimar77
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RAID 1 with motherboard software or SiI hardware?

I have to setup 2 servers with RAID 1 and the company cannot provide funds for the hardware needed until december, here is the hardware available: Computer A OS: CentOS 6.0 MB: EP41-UD3L RAM: 4GB CPU: E4300 1.80GHz Computer B OS: CentOS 6.0 MB:…
Prix
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Grub install devices & Software RAID

Server has a software RAID 1 (sda+sdb) configured as /dev/md0 device. Later system upgrade was launched and grub updated. Now it promped to select grub unstall devices from the list to finish update: - /dev/sda - /dev/sdb - /dev/md0 What items…
Valera Leontyev
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