> The problem is two Adaptecs bought after different times could have different
> control chips on them (!) so you don't get a consistent environment if
> you buy Adaptec.
For my initial testing I already have the cards. Once I upgrade to Wide I
can push to change vendors. But, I would need to make sure that whatever
we end up with can work in this situation. I'll give you a quick overview:
We've got a MicroNet DataDoc 7000 7-bay hot-swappable scsi unit with a
dual channel RAID 5 controller. One channel has three 4 GB drives as one
array, the other channel has three 9 GB drives as another array. The
bottom bay is seperate and is a standalone 4 GB drive.
The standalone 4 GB is the news server boot drive. The first array (the 4
GB drives) is the boot drive for another server, and the 9 GB array is the
news spool drive. The RAID controller acts as one single SCSI ID on a
dedicated bus to the computer(s) with each RAID array as a seperate LUN.
I'm hooking the standalone 4 GB to the internal NCR controller on the news
server, and the RAID controller to a card in its PCI slot. On the other
server it's going to go into a card in the slot (a narrow card, probably)
since I don't want to bother convincing the built-in UDB SCSI to do all
this.
Basically I need a card that (1) won't reset the SCSI bus on powerup, (2)
can be set to an ID other than 7, and (3) can possibly boot off of a non-0
LUN number. MicroNet tested all this with Adaptec cards for us, so we
_know_ those are going to work for this setup.
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