Hi,

Thankyou to Robin and others for your useful comments.

Is it possible to retain and continue using some of my existing tape
storage pools
associated with  device class LTO ;  and create  new ones associated with
device
class LTO3 . ?

Will the storage pools with LTO device class  then use a mixture of  LTO2
& 3 tapes ?
And the new storage pools LTO3 tapes only ?

Thanks

Bill








Robin Sharpe <Robin_Sharpe AT BERLEX DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
21/02/2007 19:37
Please respond to "ADSM: Dist Stor Manager"

        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: [ADSM-L] TAPEPOOL made up of mixed LTO2 & LTO3
media


If by "tapepool", you mean storage pool, then I don't think so.  A storage
pool must be associated with one and only one device class.  Each tape
volume has an associated device class.  Your existing LTO2 tapes probably
use a device class with a format of "ULTRIUM2C", which allows the highest
capacity plus compression.  When you introduce LTO3, you will probably
want
to use a device class with a format of "ULTRIUM3C", to take advantage of
LTO3's higher density.  You will need a new storage pool (or pools) to
hold
your LTO3 tapes.

It is (apparently) possible to update the device class with a new
format...
at least the help for the update devclass command implies it...  but I
don't know what would happen to an LTO2 tape with ACCESS=READWRITE if its
devclass was updated to ULTRIUM3C format...  and I wouldn't risk trying
it.

Whether or not your library can support mixed media is another question
altogether.  Some libraries can handle it seamlessly (like STK L700), and
other need to be partitioned into logical libraries with each partition
dedicated to the different media types.

Robin Sharpe
Berlex Labs



             Bill Dourado
             <bill.dourado@ALS
             TEC.COM>                                                   To
             Sent by: "ADSM:           ADSM-L AT VM.MARIST DOT EDU
             Dist Stor                                                  cc
             Manager"
             <[email protected]                                     Subject
             .EDU>                     TAPEPOOL made up of mixed LTO2 &
                                       LTO3 media

             02/21/2007 06:57
             AM


             Please respond to
             "ADSM: Dist Stor
                 Manager"
             <[email protected]
                   .EDU>






Hi,

We are about to replace our  all  HP LTO-2 tape drives by  LTO-3,
in our NEO 4000 library.

My question is,  seeing the new drives can read and write both LTO-2
and LTO-3 media,   can any given  existing tapepool be made up of
both LTO-2 and LTO-3 media ?

My problem is that I don't have enough tape slots in the library and
don't want to introduce a large number of LTO-3 tapes in one go.

Also a few of our LTO-2 tapes are fairly new and it would be a shame
to write them off.

(TSM  Server for Windows 5.3)

Thanks

Bill



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This electronic mail message, including any attachments, is a
confidential communication exclusively between Babcock International
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indicated as the addressee(s). It contains information which is private
and may be proprietary or covered by legal professional privilege. If
you receive this message in any form and you are not the intended
recipient you must not review, use, disclose or disseminate it.
We would be grateful if you could contact the sender upon receipt
and in any event you should destroy this message without delay.
Anything contained in this message that is not connected with the
business of Babcock International Group PLC is neither endorsed by
nor is the liability of this company.
Babcock International Group PLC
Company number 2342138
Registered in England
2 Cavendish Square
London W1G 0PX
Telephone: +44(0)20 7291 5000
Fax: +44(0)20 7291 5055
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