I'm trying to tune our mount retension settings on our device classes.
Currently, we have it set to 3 min for our 3590 drives.  I'm not
finding much info on how to tell if our 3 min period is too long or too
short.

1st try . . . .

I sorted the mount messages (anr8337i)in a actlog listing of 24 hours
by volume/date/time and looked for multiple mounts of the same volume that
were  real close together in time and on the same drive.

I found just a couple.

2nd try . . .

I counted the number of the following messages in a actlog listing for 24
hours:
   anr8337i - mounted vol msgs = 415
   anr8325i - dismounting with expired mount retension = 230
   anr8468i - dismounted vol msgs = 415

This might indicate we had 185 instances of mount retension being useful.

But . . .

I'm not sure of is whether  a mount satisfied by a already mounted tape
even has a
mount msg in the log????

I'm also not sure whether a tape always waits for the mount retension
period to
be dismounted, or, whether it can be immediately dismounted if there are
pending mount requests for other volumes.

I looked in the manuals and online but didn't find much that helped.

Any thoughts on how to tune mount retension are appreciated!!!!

Rick



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