Hi Eric,

We use caching for that reason on our diskpool.

Gr,

Karel

-----Oorspronkelijk bericht-----
Van: Loon, E.J. van - SPLXM [mailto:Eric-van.Loon AT KLM DOT COM]
Verzonden: woensdag 6 november 2002 15:33
Aan: ADSM-L AT VM.MARIST DOT EDU
Onderwerp: Re: Diskpool volume mirroring


Hi Karel!
You are right, but our diskpool is large enough to hold a complete backup
cycle. So a lot of data is at least a day old.
I know that TSM backups up the lost data again, but this is not true of data
backed up by the TDP clients. For Oracle for instance, you will have to tell
the RMAN recovery catalog that previous backed up data is gone.
I have had a disk crash a few months ago and it took me an hour to produce
the list of TDP files which were lost. It took our DBA's a day or so to get
the recovery catalog in sync again.
That's why we are going to mirror the diskpool.
Thanks for your answer!
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines


-----Original Message-----
From: Karel Bos [mailto:Karel.Bos AT NUON DOT COM]
Sent: Wednesday, November 06, 2002 15:19
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Diskpool volume mirroring


You are right. TSM mirroring is only for DB and Log. If you need mirroring
on diskpool you have to turn to hardware mirroring. Keep in mind, the data
is (in most cases) on the client, on copypool and tapepool. So you are
mirroring for just a few hours of possible dataloss.

-----Oorspronkelijk bericht-----
Van: Loon, E.J. van - SPLXM [mailto:Eric-van.Loon AT KLM DOT COM]
Verzonden: woensdag 6 november 2002 15:07
Aan: ADSM-L AT VM.MARIST DOT EDU
Onderwerp: Diskpool volume mirroring


Hi *SM-ers!
Our AIX guys have added 6 SSA disk to our TSM server for mirroring and now I
want to add them to TSM.
However, I cannot find a way to define a mirror volume for diskpool volumes.
Now my guess is that TSM mirroring is only available for database and log
volumes and not for diskpool volumes. I'm I right?
If so, the only alternative is using AIX mirroring for diskpool volumes?
Thanks in advance for any reply!
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines


**********************************************************************
For information, services and offers, please visit our web site:
http://www.klm.com. This e-mail and any attachment may contain confidential
and privileged material intended for the addressee only. If you are not the
addressee, you are notified that no part of the e-mail or any attachment may
be disclosed, copied or distributed, and that any other action related to
this e-mail or attachment is strictly prohibited, and may be unlawful. If
you have received this e-mail by error, please notify the sender immediately
by return e-mail, and delete this message. Koninklijke Luchtvaart
Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be
liable for the incorrect or incomplete transmission of this e-mail or any
attachments, nor responsible for any delay in receipt.
**********************************************************************