RE: Cybernetics HSTC

If you're doing it purely for performance, make sure your current tape
technology is the actual bottleneck.  A sample of our backup rates to
3580 LTO2:

730 (2000 CPWs, V5R1, 6534 controller): 70GB/hour
830 (1850 CPWs, V5R1, 2729 controller): 203GB/hour
i5 570 (6000 CPWs, V5R3, 5702 controller): 270+GB/hour

All tests were libraries with 70+GB and 4000+ objects (JDE database),
save settings included DTACPR(*YES).

Only the i5 actually pegs what the tape drive can handle; the other two
are hitting other limits in the AS/400.  For the 730, I'm firmly
convinced it's the SPD bus.  For the 830, it might be the PCI bus; I
never really investigated as it was 'fast enough', especially when
compared to the 730.

Also, again if backup window is a concern, would the faster
checkpointing in V5R3 help?

John A. Jones, CISSP
Americas Information Security Officer
Jones Lang LaSalle, Inc.
V: +1-630-455-2787  F: +1-312-601-1782
john.jones@xxxxxxxxxx

-----Original Message-----
From: Jeff Green [mailto:jgreen@xxxxxxxxxxxx] 
Sent: Monday, January 31, 2005 3:45 PM
To: midrange-l@xxxxxxxxxxxx
Subject: Cybernetics HSTC

We are considering a disk to disk to tape backup solution from
Cybernetics called the HSTC.  It's essentially a terabyte of disk with
software to make it look like LTO tapes, and an attached LTO tape drive.
Has anyone had any experience with this unit or this type of solution?
Any gotchas you could share?
 
Jeff Green
ERP Manager
Metal Sales Manufacturing
Sellersburg, IN 47172
 <http://www.mtlsales.com> www.mtlsales.com



This email is for the use of the intended recipient(s) only.  If you have 
received this email in error, please notify the sender immediately and then 
delete it.  If you are not the intended recipient, you must not keep, use, 
disclose, copy or distribute this email without the author's prior permission.  
We have taken precautions to minimize the risk of transmitting software 
viruses, but we advise you to carry out your own virus checks on any attachment 
to this message.  We cannot accept liability for any loss or damage caused by 
software viruses.  The information contained in this communication may be 
confidential and may be subject to the attorney-client privilege. If you are 
the intended recipient and you do not wish to receive similar electronic 
messages from us in future then please respond to the sender to this effect.