I have a 3583 with 3 LTO1 drives and 1 LTO3. I have 2 devclass's defined with
FORMAT=ULTRIUMC and FORMAT=ULTRIUM3C and stgpools
defined to use the specific type. I notice that if I had specified
FORMAT=DRIVES, then it was possible that when asking for a
scratch that I would get an LTO1 when I really wanted an LTO3 for that stgpool.
The documentation does state that using mixed drive
types you should not specify FORMAT=DRIVE.
The main problem I ran in to was that I was unable to issue any commands that
would copy/move the data from LTO1 to LTO3. The
process would sit in a waiting for mountpoint and never finish. I opened a PMR
and it went all the way up to the developers. The PMR
was closed as a documentation "fix" that said to FULLY support mixed drive
types in a library you must logically partition the
library to separate the drives in different partitions. They said that the
algorithm for device allocation would need a significant
overhaul so they were changing the documentation. This was probably about a
year ago I posted this to ADSM-L. Try searching the
archives for my posts.
Bill Boyer
"Experience is a comb nature gives us after we go bald." - ??
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
CAYE PIERRE
Sent: Sunday, June 03, 2007 6:32 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Mixing drive types in logical library 3584
Well I forgot that, if the library is able to manage different cartridge type,
everything is different.
My experience is very limited and about STK Libraries (with ACSLS of course),
and 358x libraries (3583/3584), with and without
partitioning.
It is also different when mixing LTO drives with other technologies.
-----Message d'origine-----
De : ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] De la part de
Brian Matthias Envoyé : dimanche 3 juin 2007 03:52 À :
ADSM-L AT VM.MARIST DOT EDU Objet : Re: [ADSM-L] Mixing drive types in logical
library 3584
You may have found your answer; however, there is a TSM Technote on libraries
using mixed media.
The Technote reference number is 1155662
Regards,
Brian Matthias
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Chris McKay
Sent: Wednesday, May 30, 2007 12:39
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Mixing drive types in logical library 3584
Hi all,
I have been told by IBM that fibre LTO2 drives are no longer available.
We
wish to expand the number of drives in our 3584 library from 2 to 5. The
current 2 drives are fibre LTO2 drives, would it pose a
problem by adding an additional 3 LTO3 drives to that logical library? Is it
possible under Windows?? I realize I will need to
continue to use LTO2 media, as the existing LTO2 drives would not be compatable
with LTO3 media. Our TSM server is running on
Windows 2003.
Any input would be appreciated.
Regards,
Chris
______________________________________________
This message is for the sole use of the intended recipients and may contain
confidential and privileged information. Any
unauthorized review, use, disclosure or distribution is prohibited. If you are
not an intended recipient, please contact the sender
by reply email and destroy all copies of the original message. Thank you for
your cooperation.
|
