Digital BW, The Print

On 10/02/2011 21:02, mrjimbo wrote:
>
> Just a tad more info for Raid.. For most folk here I would think that 
> mirroring between two drives side isthe way to go.. It is the slowest 
> preformer both reading and writing.. but it is redundant
>
Mirroring (RAID 1) well implemented has read performance similar to RAID 
0 (alternate sectors read from each drive). Poorly implemented it will 
have the same read performance as a single drive (data read from only 
one drive, the other being ignored). I would hope that by now the former 
would be more common.
It is probably slowest for writing.
It is probably fastest for rebuilding. (RAID 0 can't rebuild, RAID 5 has 
to read every remaining disc for each sector and calculate what should 
be written to the replacement disc. If you know you need one of the 
other RAID configurations, you don't need advice from me!)

-- 
mike finley photography




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