I am new to this shop, and it is my first time working with FDR, I am
familiar with DFSMS and have just finished reading the FDR manuals (I only
fell asleep a few times.). Currently I am trying to understand this new
environment, how and why things are setup the way they are.
My question of the day is....
What/where does DFSMS check for a dataset backup prior to migrating a
dataset?
I thought that DFSMS looked in the BCDS to verify that it had a good backup
of the dataset prior to migrating the dataset to tape. However that must
not be the case, we use FDR for backup and HSM for migration here without
running HSM backups, and datasets migrate. If FDR backup hasn't run on a
dataset it won't migrate, and the error is there is no valid backup.
Once FDR backs up the dataset HSM is able to migrate the dataset, what is
HSM looking at to validate it has a good backup prior to migration?
This relates back to an earlier post where we have an issue with migrated
datasets not having a valid backup because the retention on the FDR backup
jobs is 60 days, and datasets are migrated much longer than 60 days. We
have users who occasionally recall a dataset that has been migrated many
months (usually smp zones), then do some work, screw up the zone and want it
recovered from a backup all in the same day. Since the backups expire after
60 days, we have to do some HSM manipulation to get the data back from the
migration tape. I really need a way to make sure that the last backup in
FDR never expires as long as the dataset is cataloged on the system. I
haven't found that option in FDR. I looked at FDR Archive, but I don't see
a similar option that makes sure I have a valid backup copy as long as the
dataset is archived (MIGRAT1).
Or I need to let HSM do backups of the datasets and keep one version (to
guarantee I always have a valid backup for the migrated datasets), but to do
this I still need to figure out a way to keep HSM from reseting the changed
bit so it doesn't impact our FDR backups.
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