28 Jan
2010
28 Jan
'10
8:38 a.m.
Philip Pemberton wrote:
Dave McGuire wrote:
Even more fun is SAS, which is serial attached scsi. So that may seem
like it's not that big of a deal, but some SAS controllers can actually
be attached to SATA drives with the right splitter cables... Which of
course could be external, and could be CD/DVD drives... And even
better, they might just be shared over TCP/IP via iSCSI... :)
So there you go, even more layers, and in this case, recursively so.
Well to be fair, IDE didn't exactly replace
SCSI. ;) And,
interestingly, it's starting to look like SCSI drives will still be
produced after IDE drives are no longer being made.
Also bear in mind -- the USB Mass Storage protocol stack is
essentially a USB wrapper for the SCSI command set. SCSI is going to
leave its mark for a long time to come. Heck, ATAPI (usually used for
CD/DVD drive interfacing) is basically "SCSI over ATA"...
SATA is PATA-over-serial-link, so I guess that makes ATAPI+SATA
SCSI-over-PATA-over-serial-link. Layers, so many layers...