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Re: Newbie storage questions... (RAID5, SANs, SCSI)



"Nik Simpson" <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]: 
>> Ok... "stripe size"... So in a RAID array of 5 disks with a stripe
>> size of 8k, if I submit a request to the RAID controller to write
>> 5,000 bytes, these bytes will not be scattered equally across all
>> drives? Since the size of the data being written is less than the
>> stripe size, all of the data could conceivably written to one disk?
> 
> You nailed it. Stripe size is the minimum size of a write to a
> physical disk in the array. Trying allocate evenly at the byte level
> to each disk would be insane in terms of the effect on performance.

Unless you're using RAID3 where the stripe size is basically one bit ;)

-- 
/Jesper Monsted



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