Re: How to determine total amount saved from a BRMS control group save

Give the vendor a tape and have them import it on to their demo box. Look
at the sizes. Typically we see between 45% and 60% reduction in the size
of the storage.


Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On Thu, Oct 31, 2019 at 9:03 AM Steinmetz, Paul via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

You guessed it, VTL sizing.
I have a handle on the current backups.

What I don't have is an algorithm or formula for computing my month end
perm backups from years ago.
Example.
One full LTO7 cartridge has 32 full month end backups, 9/30/06 thru
4/30/09. (I use APPEND for all my backups, so each LTO7 is completely used)
I know, why am I keeping backups from 2006? Don't ask.

Currently, one LTO7 cartridge has 5 full month ends backups.
What would really be helpful is how much VTL dedup storage is needed for
one full LTO7 cartridge.

Paul

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob
Berendt
Sent: Thursday, October 31, 2019 9:42 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: How to determine total amount saved from a BRMS control group
save

If you are sizing for getting a VTL, and that has dedup capabilities, you
will really be oversizing. You know this, right?

But one way to scope this out is to do a PRTERRLOG TYPE(*VOLSTAT)
VOLTYPE(3590) VOLSTAT(*DLT) Before your backup, just to clear out previous
volume statistics. Then do a PRTERRLOG TYPE(*VOLSTAT) VOLTYPE(3590)
Afterwards.
IDC if you have a 3590 or not. That value seems to work for LTO devices.

If you don't ever reuse tapes then a plain PRTERRLOG TYPE(*VOLSTAT)
VOLTYPE(3590) Should work.
In our pre BRMS days we would do this to know if we needed to load up
additional tapes for that night. Like, if we were getting close to the end
of a tape.
Of course, you have to convert that UOM to whatever the sizing worksheet
wants.

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com


-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of
Steinmetz, Paul via MIDRANGE-L
Sent: Thursday, October 31, 2019 9:20 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxxxxxxxx

Cc: Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
Subject: How to determine total amount saved from a BRMS control group save

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I need to determine the total amount saved from a BRMS control group save.

PRTRPTBRM TYPE(*CTLGRPSTAT) only reports the total of *ALLUSR libraries.

Not included
*SAVSECDTA
*SAVCFG
*ALLDLO
*LINK

Any thoughts from the group?


Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx

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