I have HSM and FDR working the way you describe, but my concern is that if I
run HSM after FDR and HSM resets the change bit, there is a chance that HSM
could backup a dataset that has been newly created/modified since the FDR
backup ended and the HSM backup started that would be backed up by HSM, its
bit reset, and then FDR would not backup the DSN during the next run.
I have a potential exposure there if a critical dataset happened to be
created or modified between the FDR and HSM backup.
Jasen Kloeppel
[EMAIL PROTECTED]
From: Bruce Black <[EMAIL PROTECTED]>
Reply-To: IBM Mainframe Discussion List <[email protected]>
To: [email protected]
Subject: Re: HSM changed dataset indicator bit, how to prevent reset?
Date: Fri, 5 May 2006 12:17:47 -0400
Is there a way to prevent HSM from reseting the changed datset indicator
bit? I want HSM autobackup to backup all changed datasets (datasets with
the changed bit on), but not reset the changed bit on the datasets it
backs up.
We currently also run FDR and it does weekly full and daily incremental
backups and resets the changed bit. I want to run the DFSMShsm process
without impacting the current production FDR processing, which I can do if
I can prevent HSM from resetting the changed bit on the datasets.
With FDR I can prevent it from resetting the changed bit with the
UPDATEFLAG=NOCHANGE option, but I haven't been able to find an equivalent
function in HSM.
Jason, generally we tell sites which want to run FDR and HSM in parallel to
run FDRABR backups first with UPDATEFLAG=NOCHANGE, then run HSM backups on
the same volumes, to backup the same datasets and turn off the update
flags.
While you are comparing the products, please make note of the elapsed times
of FDR vs HSM to backup the same data
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: [EMAIL PROTECTED]
sales info: [EMAIL PROTECTED]
tech support: [EMAIL PROTECTED]
web: www.innovationdp.fdr.com
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