[Info-vax] Buying disk for a DS10

[Rich Jordan]

On Feb 25, 2:51 pm, Steven Schweda <sms.antin... at gmail.com> wrote:
> On Feb 25, 2:19 pm, Rich Jordan <jor... at ccs4vms.com> wrote:
>
> > F000  CC PKA:  14 Symbios 895 ....  (I _think_ this is a KZPBA)
>
>    No, _this_ is a KZPBA:
>
> 6800   B0 PKB:    9 Qlogic ISP1020 SCSI-2
>
> A KZPCA uses an LSI/Symbios 53C895 chip, however.  (The Qlogic
> card uses an ISP1040 chip, but VMS tends to call it a 1020.)

Thanks, Steven.  I didn't have ready access to a known KZPBA or KZPCA
equipped system; that's why I qualified the comment.


>
> > Report back what you see.
>
>    That would be unusual, but it would be a welcome change.
>
> > If you get a drive with an 80 pin SCA connector, you will have to buy
> > a 68-80 pin adapter; get a name brand like Cables to Go and make sure
> > it isn't too tall to fit in the bay where the drive is going.
>
>    What's a "name brand" SCA adapter?  I've found that cheap
> Chinese junk is pretty much cheap Chinese junk, no matter who
> sells it.  I buy my 68-pin adapters on Ebay, too, like the two
> ("new") ST373207LC drives I just bought for $31.  For that
> kind of money, I can afford a few mistakes here and there.
>
>    I _have_ found that the 50-/68-pin SCA adapters which I had
> been using on my oldest junk systems did not do well in a
> faster Ultra SCSI environment.  68-pin-only adapters have
> worked fine.  (And, at one-inch high, they fit better with
> one-inch-high disk drives, too.)

I have several no-name 68-80 pin adapters, with labeling indicating
they support U160 or U320 speeds.  All of them work with various
Seagate and IBM 80 pin U160 and U320 3.5" drives on my KZPEA equipped
system, but none would work with the 2.5" Seagate drives.  However a
single 'Cables to Go' unit (which cost $20 and looks somewhat
different) did work with the little Seagates and the larger drives;
wish I still had it (it went in a customer server).  All of the 2.5
drives work perfectly plugged into an external SCSI cage with SCA
connectors on the backplane; hence my suggestion to stick with 'name
brand'.

I don't have any of the dual connector 50/68-80 cards as you
described.