[CentOS] SAS/SATA DAS

nate centos at linuxpowered.net
Wed Sep 3 00:19:00 UTC 2008


Rudi Ahlers wrote:

> Sorry for hi-jacking this thread, but it's very interesting. What's the
> difference, apart from the speed & price between SAS & SATAII?

On the most basic level I think of SAS as basically the new
SCSI, and SATA II as the new PATA.

SCSI = smaller, faster
SATA II = bigger, slower

SAS drives typically have higher quality control on them too. I
get the impression that a lot more firmware bugs get out on the
SATA drives vs the SAS/FC drives. Though the only time I've ever
had to upgrade the firmware on a disk drive was regular U320 SCSI
disks from Seagate sold via Dell.

nate



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