Posts with the tag Software RAID

Improving the Speed of Software Raid on Linux (Read/Write/Resync)

Speeding up the write access of a RAID array

echo 32768 > /sys/block/md0/md/stripe_cache_size

Source: Stackoverflow

Speeding up RAID1 array rebuild

With

echo 50000 > /proc/sys/dev/raid/speed_limit_min
echo 200000 > /proc/sys/dev/raid/speed_limit_max

the resync speed went from 1M/sec to about 25M/sec:

cat /proc/mdstat

Personalities : [raid1]
md1 : active raid1 sdb3[0] sda3[1]
    ...

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Sketch of an Advanced HDD / Partition Setup with high availability (mdadm software raid), encryption (dm-crypt) and high flexibility (lvm volume management)

Recently I found an interesting comment on an article about Fedora 16 maybe using btrfs as default file system: The author Vanger explained his current hard disk / partiton setup on a server and how he hopes to get a more efficient system with btrfs. More than the outlook...

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Check Health of Software-RAID using mdadm

This article is about the data consistency health of your Raid. To check the physical health of the HDDs please use smartmontools to check the SMART status of your hard drives.

The simplest possibility to find out something about the status is to read the content of the special file...

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Transfer HDD Software Raid from IB-NAS-4220-B to workstation computer

I'm writing this post because I want to get away from my Raidsonic IB-NAS-4220-B, a dedicated network access storage (NAS) device. Instead I want to put the two S-ATA hard disks into my Ubuntu linux home server. It should use software raid1 just as the NAS did before and I...

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