[conspire] Advice on Building a Computer
rick at linuxmafia.com
Sun Dec 30 19:01:23 PST 2007
Quoting Mark Weisler (mark at weisler-saratoga-ca.us):
> I think I'll refine my research and look for LVD-capable SCSI drives, perhaps
> using fewer of them as they may cost more. I appreciate the perspective about
> SATA being the now and future and SCSI largely being a technology of the past.
Minor quibble#1: "SAS" (not SATA). Stands for Serial-Attached SCSI.
All the older SCSI cabling standards used parallel-style cabling (thus,
ribbon connectors). SAS introduces into SCSI-land the exact same
serial-style electrical cabling pioneered by SATA (Serial ATA) over in
lower-rent ATA (colloquially, "IDE")-land.
o parallel ATA has been replaced by its (serial-type) successor, SATA.
o parallel SCSI has been replaced by its (serial-type) successor, SAS.
The two standards are electrically compatible, such that SATA devices
can be fruitfully used on a SAS chain (but not vice-versa).
> I just thought I'd use the SCSI as the motherboard supports it and I
> had such good luck with SCSI in the (ummmm..) 1980's and early 1990's.
Minor quibble#2: SAS _is_ SCSI, just with serial-type cabling instead
of parallel, lower voltages, and an updated device addressing scheme.
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