Terry Collins was once rumoured to have said:
> I'm checking some old 5" full height drives for a donation and one of
> the drives is identified by the SCSI card as being a SEAGATE type-num
> SUN 1.3G.
>
> As this drive is behaving differently, I thought I would ask if SUN
> systems required/had some significant configuration differences to the
> intel uses.
>
> It took a long time (about 30secs to power up), but this could be just a
> jumper setting. It also ignored the first few attempts to format and
> verify it.
Yes, this is because lots of SCSI disks are configured to not
automatically spin up, but to spin up when the start device command is
recieved. This usually only happens when the PROM/BIOS tries to boot
the disk, or when the OS probes the bus to find the devices. This has
the advantage of less PSU load in large machines. (I take the example
of the old ANU Library DEC4000AXP. 8x 1GB SCSI-2 disks - it span each
one up individually, rather than having them all auto-spin-up when
they got power).
None the less, fairly common stuff with SCSI.
C.
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