On Sunday, 11 November 2001 at  9:33:56 +0100, S�ren Schmidt wrote:
> It seems Mike Smith wrote:
>>> Agreed.  I don't think the RAIDs will have the same parameters.  Most
>>> of these cheap controllers have fairly simplistic algorithms.  Note
>>> that I said "guess", though.  In my language, that means "don't know
>>> for sure".  I'd really like to see some objective benchmarks.
>>
>> Er.
>>
>> These "cheap controllers" don't have any algorithms at all to speak of;
>> they're just ATA controllers with BIOS code that supposedly understands
>> striping/mirroring.
>
> There is no algorithm to speak of involved with striping, and just
> a little more in mirroring in the error case, but anyways..

Well, there are questions of stripe size and whether you read entire
stripes or just the part you want.

>> The "algorithms" are in the 'ar' driver, which should really just be a
>> vinum shim.
>
> Well, the way vinum is implemented that wont work unfortunately.

Details?

Greg
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