Hi,
This performances may be normal as when you reclaim a tape, it does not
read with full capacities of the drive, TSM search for the first file on
the tape, reads it, search for the next file, reads it ... and so on. It's
normal that the data throughput is less than the maximum of the tape
because you have to add the search time to the read time.
Etienne GUILLAUMONT
e-mail : etienne AT rgb-technologie DOT fr
RGB Technologie
Parc d'Innovation, Bâtiment PYTHAGORE
11 Rue Jean SAPIDUS
67400 ILLKIRCH
Tél : 03 90 40 60 60
Fax : 03 90 40 60 61
"Loon, E.J.
van - SPLXM" To: ADSM-L AT VM.MARIST DOT EDU
<Eric-van.Loo cc:
n AT KLM DOT COM> Subject: LTO Reclamation
Sent by:
"ADSM: Dist
Stor Manager"
<ADSM-L AT VM DOT MA
RIST.EDU>
06/03/2003
17:14
Please
respond to
"ADSM: Dist
Stor Manager"
Hi *SM-ers!
I just checked my reclamation. A tape was being reclaimed and it took TSM
3:41:14 to do the job. The total amount of data being reclaimed was
104,711,564,841 bytes. That's about 7.8 Mb./sec.
I don't know if this is a speed one might expect, but to me it looks a
little bit slow. I'm using a TSM 4.2.3.2 server on AIX, the drives are SCSI
attached, two drives per cable/connector.
Does anybody have some tricks to boost this performance? Or maybe, this is
normal performance?
Thanks in advance for any reply!
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
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