It is no secret that I am a pretty big fan of excellent Linux Software RAID. Creating, assembling and rebuilding small array is fine. But, things started to get nasty when you try to rebuild or resync large size array. You may get frustrated when you see it is going to take 22 hours to rebuild the array. You can always increase RAID resync performance using the following technique.
Recently, I build a small NAS server running Linux for one my client with 5 x 2TB disks in RAID 6 configuration for all in one backup server for Mac OS X and Windows XP/Vista clients computers. Then whey I cat /proc/mdstat it reported that md0 is created and resync is in progress. The resync speed was around 4000K/sec and resync will complete in approximately in 22 hours. I wanted to finish this early.
Saturday, September 11, 2010
HowTo: Speed Up Linux Software Raid Building And Re-syncing
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