[geeks] SATA Cards

[nate at portents.com]

> Sridhar beat me to it to suggest SAS, since that does seem to be the
> successor to (p)SCSI.  However, like most things SCSI, it's more
> expensive.

Successor?  It is SCSI.  SAS literally stands for Serial Attached SCSI.

> Interestingly, the storage arrays we design at work (Dell|EqualLogic)
> all use SAS controllers to talk to the drives; SATA drives work, but
> only with a dongle on the drive sled to convert the dual-channel SAS
> signals to SATA.

SAS is a superset of SATA and uses the Serial ATA Tunneling Protocol (STP)
to communicate to SATA devices.  (SAS controllers use Serial SCSI Protocol
(SSP) to talk to SAS devices.)

- Nate