There is a new parameter in the 4.1.2 HSM client for
   AIX 4.3 which allows you to define how many processes are
   used for HSM migration. The parameter name is MAXMIGRATORS.

   From the IP22148.README.HSM.JFS.AIX43 file:

o dsmautomig
  Starting with this release, dsmautomig starts parallel sessions to the
  TSM server that allows to migrate more than one file at a time.
  The number of parallel migration sessions is recognized by the dsmautomig
  process specific option that can be configured in the dsm.sys file:
       - MAXMIGRATORS number poff parallel migration sessions
         (default = 1, min = 1, max = 20)

  Make sure that sufficient resources are availabale on the TSM server for
  parallel migration. Avoid to set the MAXMIGRATORS option higher than
  number of sessions on the TSM server can be used for storing data.

--
 Mary Stephenson
 Mary Stephenson
 Email:    mstephen AT acns.fsu DOT edu
 Academic Computing & Network Services
 Florida State University


Don Avart wrote:
>
> Our TSM server (RS6000 S7A) is attached to an STK silo
> with 22 tape drives.  The problem that we are
> experiencing, beyond library and drive reliability, is
> with the apparent migration and recall process.
> Because we have many tape drives, we have dedicated 8
> drives to HSM only.  We have two HSM enabled
> filesystems, /hsmprod and /hsmuser which are local to
> the TSM server.  The filesystem of most concern is
> /hsmprod (production).  This filesystem is 200GB and
> has 90GB written to it nightly.
>
> The problem we are encountering is if we miss a backup
> or two the filesystem is full.  The backup process is
> relatively fast, we write to disk and to multiple tape
> drives.  However, the migration process is extremely
> slow.  It appears that this process will only mount
> one tape drive for migration.  Yet when users try to
> recall data, it will mount multiple tapes and spawn up
> to 20 recall processes (as per maxrecalldaemons=20).
> Are there any settings to increase the number of
> sessions or daemons the migration process will spawn.
>
> Thanks in Advance
>
> Don Avart
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Auctions - buy the things you want at great prices
> http://auctions.yahoo.com/
>