SAS speeds? - TechRepublic
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September 11, 2009 at 09:25 AM
jake

SAS speeds?

by jake . Updated 16 years, 9 months ago

Okay i have been trying to expand my knowledge of the different I/O options and speeds. I understand that ATA 133 is only slightly slower than SATA 1 (1.5Gb/s) and that SATA II/III (3Gb/s 6Gb/s respectively) are much faster than the drives themselves can read or write. I understand that most high performance drives can write at 130 or so MB/s, and the reason SATA II came about was more for SSD’s with throughputs of 200MB/s.. but what about SAS drives? they are available in 10000 and 15000 rpm options, does that make the throughput of the drives significantly quicker? I would hope and expect that these expensive (by comparison to a standard SATA) drives would be able to move significant amounts of data much faster than a standard disk. And if they dont, then why use them?
This may be a silly inquiry, but i am curious on the matter…
thanks,
Jake

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