Gus Wirth wrote:
maverick wrote:
Question I'm hearing that the new SATA drive can go much faster then
SCSI is this true?
[snip]
Not yet. There are a lot of things that go into the performance of a
disk drive, but a few of the most important ones are rotational speed
and seek times (how long it takes the heads to move to a new track).
Right now top end SCSI drives are still 50% faster in rotational speed
(15,000 vs. 10,000 rpm) and have faster seek times (3.5 ms vs. 4.6 ms)
This is at the physical level.
At the interface level, SATA-II is probably better than SCSI, but nobody
can make use of it quite yet.
SATA-II is capable of delivering 3GBit/s which is about 300Megabytes/s
*per drive*. You need an Ultra320 SCSI card to do that, and that's for
the *bus*.
In reality, the hardware dominates the performance characteristics for
now. However, it only takes a couple of SCSI drives to saturate a bus
nowadays.
-a
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