see below.


Cordiali saluti
Gianluca Mariani
Tivoli TSM Global Response Team, Roma
Via Sciangai 53, Roma
 phones : +39(0)659664598
                   +393351270554 (mobile)
gianluca_mariani AT it.ibm DOT com
----------------------------------------------------------------------------------------------------
The Hitch Hiker's Guide to the Galaxy says  of the Sirius Cybernetics 
Corporation product that "it is very easy to be blinded to the essential 
uselessness of  them by the sense of achievement you get from getting them 
to work at all. In other words – and this is the rock solid principle  on 
which the  whole  of the Corporation's Galaxy-wide success is founded 
-their fundamental design flaws are  completely  hidden  by  their 
superficial design flaws"...



Anoop Das <danoop AT IN.IBM DOT COM> 
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
31/03/2004 15.40
Please respond to
"ADSM: Dist Stor Manager"


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Subject
Gen1 to Gen2 Upgrade/coexist






 Am using an LTO 3583 with 2 scsi Gen1 drives and GEN1 cartridges. 
Planning
to upgrade to 4 fiber Gen2 drives in the 3583. The SCSI drives will be
removed. The current data exists on over 150 gen1 cartridges and hence do
not plan to move to gen2 cartridges immediately. The setup is directly
attached to the pSeries servers running AIX 5.1 and TSM Server
Got some queries

1. Will Gen2 drives be able to read and write(new as well as append to
existing tapes) on the existing gen1 cartridges without problem?
yes
2. What speed will I get out of the new setup? Gen2 speed or Gen1 speed?
using LTO1 tapes on LTO2 drives you'll get speeds inbetween the two.you 
will have to test for your specific environment.

3. If I coexist the new gen2 drives with the existing gen1 drives where 
can
I get stuck?
you have to get the feature upgrade for the 3583.it needs to be 
partitioned in separate libraries for LTO1 and 2 drives.then you have to 
assign the storage columns to the separate libraries.LTO1 drives cannot 
write LTO2 media.TSM will see two medium changers(libraries).

Anyone experienced in this kind of a scenario?

Anoop