ADSM-L

Re: Migration -> Primary and Copy Pool

2005-05-05 16:10:17
Subject: Re: Migration -> Primary and Copy Pool
From: "Darby, Mark" <Mark.Darby AT HQ.DOE DOT GOV>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 5 May 2005 16:08:16 -0400
Bruno,

That is because simultaneous write only comes into play during certain
operations.  Simultaneous write is not implemented for migration operations
performed by the server.

Read the section of the Adminstrator's Guide entitled "Using the
Simultaneous Write Function to Protect Your Data".

Here's an excerpt from that section of the manual that applies to your
question...

Simultaneous write is supported for the following operations:
- Backup and archive operations by Tivoli Storage Manager backup-archive
clients or application clients using the Tivoli Storage Manager API
- Migration operations by Hierarchical Space Management (HSM) clients 
- Import operations that involve copying exported file data from external
media to a primary storage pool associated which is configured for
simultaneous write configuration


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Bruno Melo - Suporte Informática
Sent: Thursday, May 05, 2005 3:52 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Migration -> Primary and Copy Pool


I know that Jean. :-)

I'll try to explain better, the next storage pool defined on the disk
storage pool is the tape primary pool.
And in the tape primary pool there is a copy storage pool defined.
The problem is that the data that is going to the tape primary storage pool
isn't going to the copy storage pool simultaneously.

----- Original Message -----
From: "William Jean" <wjean AT GLASSHOUSE DOT COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
Sent: Thursday, May 05, 2005 4:35 PM
Subject: Re: Migration -> Primary and Copy Pool



You can't migrate data in copy pools.

________________________________

From: ADSM: Dist Stor Manager on behalf of Bruno Melo - Suporte Informatica
Sent: Thu 5/5/2005 3:24 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Migration -> Primary and Copy Pool



Hi Fellows,

The environment:

TSM Server 5.1.9.5, AIX 4.3.3 ML 9
Two 3580 LTO1 SCSI tape drives (manual)
Both drives defined on the same library.

A small costumer used to backup their data directly to tape storage pools,
primary and copy, simultaneously coping the data to both storage pools.
Until that point nothing weird, just define the copystg option on the
primary and everything works like a charm. The strange bahavior appeared
when, for performance reasons, they decided to backup their data to disk and
than migrate it to tape, the migration to tape works fine, but only goes to
one of the storage pools (the primary). Since, nothing has changed on the
tape storage pools what the hell is going on? It seems like some limitation
for the migration process, but it should work.  At least this is what the
manuals show.
I've checked the migprocess option to ensure that there was only one
process, but nothing changed.
The backup stg command works fine.
Am I missing something?

Atenciosamente,
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRUNO MELO
Suporte Informatica Ltda.
e-mail: bruno AT suporteinformatica DOT com

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