On Feb 21, 2007, at 12:50 AM, Tracy R Reed wrote:
Gregory K. Ruiz-Ade wrote:
I've always considered SCSI's benefit to be it's ability to deal well
with large multiple-io workloads.
That used to be the case. But SATA with its extended IDE protocols
including NCQ etc. mitigate that quite a bit. Then you can do what
we do
which is to buy two SATA disks and mirror them because they are so
much
cheaper getting a reliability boost as well. :)
True.
For seriously high-performance, though, you still would want direct-
attached SCSI with a larger proportion of smaller-capacity drives,
versus a smaller number of larger-capacity drives.
In terms of Fiber Channel drives, are they even available in 2Gbps or
4Gbps models, or do the higher-speed FC fabrics rely on device
aggregation to push the higher throughputs even with 1Gbps interfaces
on the drives themselves?
Hell, what's the sustained throughput on a 15krpm FC or SCSI drive
these days, anyway?
Gregory
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Gregory K. Ruiz-Ade <[EMAIL PROTECTED]>
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