RE: 3576 tape drive and LTO2 vs LTO3

["Haase, Justin C." <justin.haase@xxxxxxxxxxxx>]

Sounds like you're disk bound and the tape drive was never the
bottleneck.  Do you have any performance tools (PerfNav?) to verify when
the save is running what the rest of the machine looks like?

Silly question, but I've seen it before - you're using LTO3 tapes,
right?

Justin C. Haase - Solution Engineer
IBM Certified Systems Expert - System i
Kingland Systems Corporation


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Monday, February 05, 2007 9:06 AM
To: midrange-l@xxxxxxxxxxxx
Subject: 3576 tape drive and LTO2 vs LTO3

Finding out that the speed of a LTO3 3576 tape drive isn't any faster
than 
a LTO2 3582.  Both were fiber attached from 5704 cards via IBM 2109-F16 
SAN switch.  Is there any option on SAVLIB that tells it to shift gears?

Message . . . . :    42000 - SAVLIB LIB(*ALLUSR) DEV(TAPMLB04)  
  EXPDATE('02/10/07') ENDOPT(*LEAVE) DTACPR(*DEV) OMITLIB(...) 
OUTPUT(*PRINT)

Here's a prompt of some of SAVLIB (just to see defaults):
Use optimum block  . . . . . . .   *YES
Data compression . . . . . . . .   *DEV
Data compaction  . . . . . . . .   *DEV

Rob Berendt