SCSI drive compatibility

[rhofland at fastdial.net (Randall Hofland)]

Yes, but the adapter needs to match your pin setup. I'd go for the best deal
which is probably an SCA U2W or maybe U160 with the hopes of upgrading to
newer hardware later (so use a cable able to support the maximum bandwidth).
You might even find a hot swappable (SCA) rack at some point in time and
find the SCA drives quite useful since the connector carries the power for
the drive and is typically less expensive than the 68 pin variety due to
sales volume.

And just so you know, I once had a similar problem and discovered later that
while the system worked fine when not very stressed, it suffered SCSI errors
when stressed by large file transfers because the termination was not
correct, and would freeze up at this point (it was one of my file servers).
So make sure your termination is scrupulously correct, including an active
terminator if possible.

Drew Taylor wrote:

> Hi all,
>
> As a bit of a follow up to my last post, I've begun thinking about
> replacement SCSI drives. I have an AIC-7880 on the motherboard, and would
> like to use it to it's utmost. I see that most drives these days come w/
> SCA interfaces. I've seen adapters for SCA to 50/68 pin, so I know the
> physical side is OK. Can I use these newer drives w/ the older chipset? I
> know I won't get the best possible performance but that is OK.
>
> For instance, I saw the following at Global Micro:
> QUANTUM ATLAS IV 36.4GB ULTRA-160 SCSI WIDE 68 PIN LVD $256.00
> QUANTUM ATLAS IV 36.4GB ULTRA-160 SCSI SCA 80 PIN LVD  $178.00
>
> What is the difference? Thanks for your advice. I'm a bit ignorant in the
> SCSI realm.
>
> Drew
>
> Drew Taylor                     JA[P|m_p|SQL]H
> http://www.drewtaylor.com/      Just Another Perl|mod_perl|SQL Hacker
> mailto:drew at drewtaylor.com      *** God bless America! ***
>
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