Grigori,
TSM can only dedup on devicetype FILE. As to why? Well, because new
features are only implemented on devicetype FILE. That was a desicion
made a few years back. Eventually, with TSM server version 7 or 8 or
maybe when we're all long gone deviceclass DISK will be removed....
On 29 apr 2009, at 14:37, Grigori Solonovitch wrote:
Hello Everybody,
I am testing TSM 6.1 under AIX.
I have tried to enable de-duplication for primary disk pool:
tsm: BKME>upd stg daily_1 dedup=y
ANR2344E UPDATE STGPOOL: The "DEDUPLICATE" option is not valid for
device class DISK.
ANS8001I Return code 3.
tsm: BKME>
I have been affected too much by this message, because most of our
primary pools are on FATA disks.
Could somebody explain me why IBM is not able to use de-duplication
for device class DISK?
What is behind this?
I understand I was reading all available before documentation not
enough carefully, because I was sure that it is much easier to de-
duplicate data on disks in comparison with tape drives.
Kindest regards,
Grigori G. Solonovitch
Senior Technical Architect
Information Technology Bank of Kuwait and Middle East http://www.bkme.com
Phone: (+965) 2231-2274 Mobile: (+965) 99798073 E-Mail: G.Solonovitch AT bkme
DOT com
<mailto:G.Solonovitch AT bkme DOT com>
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