On Dec 13, 2007, at 7:09 PM, Pete Turnbull wrote:
OK, with my
new Origin 2000 machines, I was thinking that I could use
these SGI drives+sleds that I had purchased previously, where the
seller said they would work in Onyx2/Origin machines. However, while
the sleds appear compatible, the drive interface is not.
For instance, my drives have a high density
connector that is only
about 1" long, but the Origin 2000 has a high density connector that
looks to be about 2-2.5" long.
Your 1" long connector sounds like a fibre channel (FC-AL) interface.
That's a serial interface with power on the same connector. What the
Origin and Onyx2 use is an SCA connector. You can use any SCA drive
in an Origin; for a short while I had a couple of small capacity
drives borrowed from Sun systems in mine, wedged in place with small
rubber window wedges, until I got enough sleds and some larger drives.
Actually the FC (be it -AL or -SW) connector is also correctly
referred to as "SCA". A 20-pin SCA connector is FibreChannel (the -AL
suffix only applies if it's operating in Arbitrated Loop mode, which
depends on what it's plugged into) and an 80-pin SCA connector is
almost always wide SCSI.
-Dave
--
Dave McGuire
Port Charlotte, FL