RE: Save While Active problem

[barsa@xxxxxxxxxxxxxxxxxxx]

SWA synchronization goes down 91% on average when you go from V4R5 to V5R1.
Caution:  You need a lot of disk arms.

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

914-251-1234
914-251-9406 fax

http://www.barsaconsulting.com
http://www.taatool.com






                    "Graap, Ken"
                    <keg@nwnatural.com>       To:     
"'midrange-l@midrange.com'" <midrange-l@midrange.com>
                    Sent by:                  cc:
                    midrange-l-admin@mi       Subject:     RE: Save While 
Active problem
                    drange.com


                    01/16/02 04:49 PM
                    Please respond to
                    midrange-l






Evan -

Not at all ... The save while active process was designed to backup objects
as they were being used. The caveat has always been... you have to have a
"quiet system" for a few minutes to set it all up.

It is infinitely better than having to have people out of the application
during the entire save!

The synchronization process doesn't take very long. On my system I spend
maybe 15-20 minutes a night at 2AM. If your users are unable to give up
15-20 minutes for backup then you need to look into setting up a fully
redundant backup system with automatic fail over. Your users will probably
have a hard time justifying a million dollars to keep 15-20 minutes a night
of availability.... ours did.

Kenneth

****************************************
Kenneth E. Graap
IBM Certified Specialist
AS/400e Professional System Administrator
NW Natural (Gas Services)
keg@nwnatural.com
Phone: 503-226-4211 x5537
FAX:    603-849-0591
****************************************


-----Original Message-----
From: Evan Harris [mailto:spanner@ihug.co.nz]
Sent: Wednesday, January 16, 2002 1:23 PM
To: midrange-l@midrange.com
Subject: RE: Save While Active problem


Ken

I understand your recommendation and agree with what you are saying BUT:

doesn't it seem something of an oxymoron to be making the system not active
(quiescing) so you can execute a save while active procedure without
problems ?

just a thought

Regards
Evan Harris


>This illustrates why it is important to quiesce the system for a few
minutes
>during the synchronization phase of a SWA process... If all application
>activity is stopped for a short time at the beginning of a SWA save, all
>these kinds of issues disappear.
>
>Kenneth


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