As I cannot see an answer to this, I will give it a shot.
If you are speaking about virtual volumes for primary stgpools: yes, they
are sequential volumes just like the tapes. If migration will be from
diskpool to vvpool many migration processes can run simultaneously. If
migration is from a tape pool - only one process per pool.
I think you are asking about copypools. In that case you can utilize
MAXPRocesses parameter of "ba stg" command, and establish several sessions
with DR site.
Zlatko Krastev
IT Consultant
Steve Harris <Steve_Harris AT HEALTH.QLD.GOV DOT AU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
23.09.2003 07:14
Please respond to "ADSM: Dist Stor Manager"
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: Granularity of server to server
Hi List.
Heaven preserve us all from penny-pinching managers.
I've designed a really neat TSM configuration, with ½ my diskpools at my
prime site, ½ at second site. Primary tape is a local 3494 copypools are
on the offsite 3494. All this is tied together by logical SAN and LAN
links that encompass both datacentres.
The plan was for a second fibre to be installed between the sites by a
diverse route. Problem is we have the money to purchase the second link,
but not to run it. Ah the joys of working for government.
So, I've been asked to look at a config that uses server to server instead
of the SAN to tie the two sites together.
I know that with normal data, migrations are done by node, largest node
first, so that it all your data is from one node you can only use one tape
drive to migrate. Is this the same with server to server?
i.e. if my offsite TSM is only a receiver for copypool data from the
primary TSM, will I be restricted to one migration process? What if there
is more than one offsite pool defined on the offsite TSM?
Any other gotchas?
Would I be better off to split the workload between the two instances and
have them back-up each other?
Thanks
Steve.
Steve Harris
TSM Administrator
Queensland Health, Brisbane Australia
***********************************************************************************
This email, including any attachments sent with it, is confidential and
for the sole use of the intended recipients(s). This confidentiality is
not waived or lost, if you receive it and you are not the intended
recipient(s), or if it is transmitted/received in error.
Any unauthorised use, alteration, disclosure, distribution or review of
this email is prohibited. It may be subject to a statutory duty of
confidentiality if it relates to health service matters.
If you are not the intended recipients(s), or if you have received this
e-mail in error, you are asked to immediately notify the sender by
telephone or by return e-mail. You should also delete this e-mail message
and destroy any hard copies produced.
***********************************************************************************
|