Re: [HELP] RAID chunk-size
On Tue, 2 Apr 2002 13:48, Alvin Oga wrote:
> chunk size does NOT matter for raid5...
Chunk size does not matter for RAID-1, but does matter for other RAID levels.
> if your disk was partitioned as... 2K bytes/inode...
You probably mean 2K blocks. The number of bytes per inode just determines
the size of the inode tables.
>From the man page:
chunk-size size
Sets the stripe size to size bytes. Has to be a
power of 2 and has a compilation-time maximum of
4M. (MAX_CHUNK_SIZE in the kernel driver) typical
values are anything from 4k to 128k, the best value
should be determined by experimenting on a given
array, alot depends on the SCSI and disk configura
tion.
> it also makes a difference if you used a inode size of 1K or 2K or 4k
> during disk partitioning
> - lots of little files or few huge/gigantic files ??
If you have lots of little files then if you want good write performance then
you want RAID-1 or RAID-10. RAID-5 is the cheap alternative.
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