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Re: [Networker] LTO3 and LTO4 in a single tape library
2010-04-29 22:18:23
Ken Ciolek wrote:
You will have to create new and separate pools for the LTO3 and LTO4 tapes because it is not smart enough to know the difference and not mount to those drives.
----- Original Message -----
From: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Sent: Thu Apr 29 18:34:46 2010
Subject: Re: [Networker] LTO3 and LTO4 in a single tape library
In regard to: [Networker] LTO3 and LTO4 in a single tape library, Dietz,...:
We just added 2 new LTO4 drives in a StorageTek SL500 tape library with
4 existing LTO3 drives.
My question is this -- can I label new LTO4 tapes to the same pool as
other LTO3 tapes and expect NetWorker to be smart enough to load LTO3
tapes only to LTO3 drives and LTO4 tapes only to the new LTO4 drives
On a tape library note: a while back, we had an STK L80 tape library
with a couple of LTO-1 drives and the rest LTO-3. Following the upgrade
to LTO-3 we kept a couple of the older LTO-1 drives in there just in
case we had any problems recovering data from LTO-1 tapes on the LTO-3
drives.. We removed the LTO-1 drives later.
Anyway, with mixed drive types, the tape library refused to allow us to
move any tapes around anywhere, UNLESS they had barocdes with 'L3' and
'L4' identifiers. I guess the library could see that it had at least two
different drive types and wanted to play it safe - not that it would
have any way of actually knowing that a tape with an 'L3' identifier was
really an LTO-3 tape. So, for that tape library, and strictly speaking
from the tape library's perspective, this appeared to be a safeguard,
and we were able to have both drive types. As soon as we removed the
LTO-1 drives, it no longer required the barcodes and was happy to move
anything anywhere.
I don't recall what we did on the NW end of things, but we might have
restricted drive access somehow to prevent NW from loading LTO-3 tapes
into the LTO-1 drives. We may have actually disabled the LTO-1 drives.
You'd think that NW would know not to load an LTO-4 tape into an LTO-3
drive. After all, it should have this information in the media database
and/or the resource database as far as the drive type and media type. Go
figure? But even if it did support this, how would it know the media
type when you're labeling the media? It would have to rely on the
barcode, so that could definitely be a problem.
George
No.
, or
should I create a new and separate tape pool for the new LTO4 tapes? We
did get new L4 labels for the new LTO4 tapes.
That's worth a try.
Tim
--
George Sinclair
Voice: (301) 713-3284 x210
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