I am running LTO2 and LTO4 drive under same library manager since last 4
months so far no problem.wE diod not partition library.
THX
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
David Longo
Sent: Thursday, June 05, 2008 10:26 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] LTO1 to LTO4 migration question
You do not have to partition the library, mixed LTO devices can exist in
same logical library now.
Install and configure the LTO4 drives. Then label/checkin LTO4 tapes
and create new Tape Stg Pools. Then take an existing Mgmnt Class and
point it to new tape pool. Data will then go there and gradually expire
on old tape pools. Depending on how much space you have in 3584, you
may then want to Migrate data from LTO1 pools to LTO4 pools this will
get rid of old tapes quicker. Don't forget offsite pools also.
One main thing is to balance number of LTO1/4 drives to make this work
well. Do you have a choice of replacing some of the LTO1 drives now and
the rest later? That would help. I would not try to do all pools at
once, do 1 or 2 to start and then others as you have resources and see
how this is working.
There are a few other items, but that covers the basics.
David Longo
>>> TSM User <user.tsm AT GMAIL DOT COM> 6/5/2008 9:34 AM >>>
I'm trying to find the best way to migrate a 3584 library from LTO1 to
LTO4 media. For a period of time, both drive types will be installed.
I know the library can be partitioned, but capacity is already pretty
tight, and it would almost certainly require continuous "redrawing the
borders" as the relative proportion of media types shifted, in order to
make everything fit. Would there be any gotchas if I defined both
device classes to the same library, and then assigned the LTO4 scratch
media to the appropriate storage pools immediately on checkin? Or am I
required to do some kind of library partitioning to make this work?
I've done some searching online, but can't find anything explicit one
way or the other.
Thanks,
Kathy
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