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Nope, we're not using BRMS.  We're just using a CL to perform the backups
and it's just one box and tape drive.    

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
RRiehle@xxxxxxxxxxxxxxxxxxxx
Sent: Wednesday, August 16, 2006 4:11 PM
To: Midrange Systems Technical Discussion
Subject: Re: 3581 Tape Device







David ... just out of curiousity are you using BRMS when doing your backups
?  Also are you backing up mutiple boxes to one or multiple tapes ?

Robert F Riehle
Sorrento Lactalis Inc.
AS400/Security Administrator
716-823-6262 x-282
RRIEHLE@xxxxxxxxxxxxxxxxxxxx


                                                                           
             Pat Barber                                                    
             <mboceanside@worl                                             
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             Sent by:                  Midrange Systems Technical          
             midrange-l-bounce         Discussion                          
             s@xxxxxxxxxxxx            <midrange-l@xxxxxxxxxxxx>           
                                                                        cc 
                                                                           
             08/16/2006 03:53                                      Subject 
             PM                        Re: 3581 Tape Device                
                                                                           
                                                                           
             Please respond to                                             
             Midrange Systems                                              
                 Technical                                                 
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             <midrange-l@midra                                             
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No sense guessing...

http://www-306.ibm.com/common/ssi/OIX.wss?DocURL=http://d03xhttpcl001g.bould
er.ibm.com/common/ssi/rep_sm/4/897/ENUS3581-_h04/index.html&InfoType=DD&Info
SubType=SM&InfoDesc=HW+%26+SW+Desc+%28Sales+Manual%2C+RPQ%29&panelurl=OIX.ws
s%3Fbuttonpressed%3DDET001PT116%26page%3D1000%26paneltext1%3DDET001PEF012%26
user%2Btype%3DEXT&paneltext=HW%20&%20SW%20desc%20(Sales%20manual,%20RPQ)


David Charmatz wrote:
We currently have a 3580-2 (3581-L23) Ultrium2 LTO tape device. I am
running
several of backup commands to see which will give us the best
performance.



I'm trying to figure out a few things regarding its performance.



1)      Unless I'm mistaken, doesn't the 3581 tape drive have built in
hardware compression?

2)      If it does have hardware compression, shouldn't it write an
Ultrium2
tape to at the maximum 400 GB?

3)      How can I verify the hardware compression is on?  (Nothing in
Service, Setup, Operator Guide - there was a previous posting suggesting
pins in the back of the unit, however, I am unable to locate them or
documentation referring to them)

4)      I ran a SAVLIB LIB(TSTDTA) DEV(TAP01) DTACPR(*DEV).  When I run a
DSPTAP DEV(TAP01) DATA(*SAVRST), I see the following: Data Compressed: No

I can run SAVLIB LIB(TSTDTA) DEV(TAP01) DTACPR(*YES) and still get: Data
Compressed: No

5)      I ran a PRTERRLOG TYPE(*VOLSTAT) VOLTYPE(3580) VOL(TST001).
Under
---M Bytes--- Section, I get 1 Read and 51764 written.  I'm assuming that
means that it wrote 51764 MB?  The library itself only contained 156 MB.
Any ideas on this?





Thanks,



David Charmatz



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