RE: Attaching a 3995 library to a model 520

The 5702 PCI-X Ultra Tape Controller is an Ultra SCSI LVD .
The 2749 PCI Storage Controller is a SCSI HVD card.
 
You tape drive is most likely a SCSI HVD.  Attaching to the 5702 with a 
interposer will not give you much of a performance gain.  Changing the 
interface on your tape library to Ultra SCSI LVD, if possible, will give you a 
small performance gain.   See IBM's comparison of different tape devices for 
max transfer rates base on different connections and adapters.  If you library 
can have the drive(s) replace with LTO drive(s) you will get the most 
performance gain but have to replace your tapes.  Either way, cheap means very 
little performance gains but remain you investment.
 
If you have the open port and can upgrade the SCSI interface on the library, go 
that route.
 
Christopher Bipes
Information Services Director
CrossCheck, Inc.

________________________________

From: midrange-l-bounces@xxxxxxxxxxxx on behalf of Philipp Rusch
Sent: Sat 1/27/2007 4:43 AM
To: Midrange Systems Technical Discussion
Subject: Attaching a 3995 library to a model 520



Hi *all,

we switched from a model 810 to a new 520 system and want
to use the (newer) SCSI controller 5702 instead of the 2749.
The second port of our 5702 is free, we wonder about the type
of cable you need to go to the 3995-C40, if it is possible at all ?
Maybe an interposer is needed ... ?

Thanks for any help,
Philipp
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