Interpretation ought to be correct except the number. 98% used with 0.2%
migratable means 0.2% real data and 97.8% cached. If backup requires space
and file is not larger than maxsize/poolsize cached data ought to be
purged.

Verify for (order of probability):
1. maxsize limit on the diskpool
2. extremely large file in the backup
3. some of diskpool volumes being read-only of varied off
4. nasty bug with cached data

As a workaround (and according to best practices) modify the schedules not
to overlap.

Zlatko Krastev
IT Consultant






"Prather, Wanda" <Wanda.Prather AT JHUAPL DOT EDU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
20.02.2003 20:35
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: Disk->Tape migration, cache and maxnummp


Backup to the diskpool does not require a mount point.  But it does
require
adequate space in the disk pool.

My interpretation would be that the backup client has something to back up
that is larger than 2% of the diskpool.

The client sees that it can't do the incremental backup to the disk pool,
tries to switch direct to tape, but can't because it is already at
maxnummp.


-----Original Message-----
From: Conko, Steven [mailto:sconko AT ADT DOT COM]
Sent: Thursday, February 20, 2003 9:50 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Disk->Tape migration, cache and maxnummp


Question about how this scenario plays out....

Client starts an archive backup of a database to server at 1700 from cron
job. Archive is straight to tape. Uses all mountpoints assigned to it (4).

Client then starts a scheduled incremental "system-level" backup at 1800
while original cron'd backup is still running. Incremental goes to
diskpool.
Diskpool is at 98% utilized, but 0.2 % migratable. Cache is on.

Incremental fails due to media mount not possible.

Does TSM consider the connection to the diskpool as an extra mount point
and
therefore does not allow it because the client is already using its max
number of mount points (4) on the original archive?

TSM Server is AIX 4.3.3 ML10 running TSM V5.1.5
TSM Client is AIX 4.3.3 ML9 running TSM V5.1.5.
Library is a 3494, 6 drives.