Re: hard drives

[dempson@actrix.gen.nz (David Empson)]

the man <zeroarcher@hotmail.com> wrote:

> hello, I was wondering.  Since you can daisy chain up to 7 items on the
> apple scsi card, can one use more then one hard drive on the IIGS. thanks

Under GS/OS, you could theoretically use 63 hard drives on the IIgs,
though you would have difficulty connecting more than 49 (7 SCSI cards,
7 drives per card).  If the drives were partitioned, you are more likely
to reach the limit of 63 logical volumes.

The RamFast supports eight drives per card, so you could theoretically
connect 56 drives with seven RamFast cards, but I don't know how many
partitions in total it supports, and if its GS/OS driver would support
that many logical volumes.

A side note: the Apple High-Speed SCSI card supports up to 110 logical
volumes via its SmartPort firmware interface, but neither ProDOS-8 nor
GS/OS can make use of this capacity due to lower limits imposed by each
operating system.

I've had at least three hard drives connected to one SCSI card (Rodime
60 MB, SyQuest 44 MB removable, Quantum 240 MB, and later a Quantum 850
MB; I don't think I ever connected all four at once).
-- 
David Empson
dempson@actrix.gen.nz