Recently Kelly wrote
"q stg f=d and look for the value of reusedelay.  Typically, for primary
storage pools set this value to 0."

Kelly is usually right on the money, but I'd like to get straight about this.

In many situations where there is a real disaster that destroys the *SM database
the onsite primary tapes will also be unavailable or damaged. In these cases it
is pointless to have reusedelay of other than zero.  However, there are a range
of real problems that could require a database restore and some of these will
not necessarily manifest themselves immediately, requiring a reversion to a
database backup earlier than the point of database corruption. Thus I set
primary storagepool reusedelay to be the same as the dbbackup expiry time.

I'm at a small site, and we have primary and offsite storagepools only: perhaps
it is more usual to have primary/local copypool/offsite copypool setup, in which
case this will be less of a problem as tapes don't have to come back from
offsite.

If I can convince myself that it is safe to do so, I would love to set the
primary reusedelay to zero as it would remove the problem of pending tapes in
our small library, and I could then run expiration more often.

Discussion?



Steve Harris

AIX/ADSM/Oracle/HACMP Guy

The Wesley Hospital, Brisbane, Australia




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