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Re: Newbie storage questions... (RAID5, SANs, SCSI)
- __From__: Jesper Monsted
- __Subject__: Re: Newbie storage questions... (RAID5, SANs, SCSI)
- __Date__: Tue, 02 Dec 2003 00:32:35 -0600
"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
- Newbie storage questions... (RAID5, SANs, SCSI),
David Sworder
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Nik Simpson
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
David Sworder
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Robert Wessel
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
David Sworder
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Hans Jørgen Jakobsen
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
David Sworder
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Nik Simpson
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Jesper Monsted
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Nik Simpson
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Robert Wessel
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Robert Wessel
- Re: Newbie storage questions... (RAID5, SANs, SCSI),
Bill Todd