SATA II transfer rates

[Scott J. Henson]

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
>
> /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.