SATA II transfer rates
Scott J. Henson
scotth at csee.wvu.edu
Fri Jul 29 04:40:52 UTC 2005
Thomas Kaiser wrote:
> Hello All
> I did run hdparam -t on my SATA || harddisk. Is 57.30 MB/sec a good
> transfer rate for a SATA || HD?
> # hdparm -t /dev/sda
> Timing buffered disk reads: 172 MB in 3.00 seconds = 57.30 MB/sec
> If not, how can I tune the transfer rate?
Off disk transfer rate is dominated by platter speed, aka the rpms. For
a 7000rpm disk, ~55MB/sec is a good transfer rate. What SATA 2 gives
you is amazing transfer rate out of cache. You can test this with the
-T option. If I remember correctly, this should be on the order of
300MB/sec. It sounds like your disk is operating as intended.
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