If this is an IBM library (ie. 3583 or 3584) it is set via the front panel of
the library. With some STK libraries it can't be set. We have an STK L40 an
IBM 3583. Our volsers has L1 at the end on our IBM library. We wanted to put
those tapes in the STK library but we couldn't. See the internal label had the
L1 on it as well so when it mounted the tape the external volser didn't match
the internal volser and we got an error.
Anyway, I explained all that because I would stay away from using the L1, L2 or
L3. It would not be wise in my opinion to have a volume called 000001L1 and
000001L2 in your library. If you don't need that then you shouldn't need the
L1 to show up.
If you are moving tapes from library to library then you may have a problem.
You could of course as you move into the new library relable the tapes.
"Prather, Wanda" <Wanda.Prather AT JHUAPL DOT EDU> wrote:
This is a function of your library.
It will be in your library operations manual. Usually it's something
you set with the front panel menus.
Before you can make the change though, note you will have to
reinitialize your tapes with LABEL LIBV. This will destroy any data
currently on the tapes.
Wanda Prather
"I/O, I/O, It's all about I/O" -(me)
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Iain Barnetson
Sent: Thursday, January 20, 2005 11:09 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Cache Hit % below 99%
Importance: High
Does any one know how I can get the LTO version to appear at the end of
the volume numbers in TSM?
If I q libvol the volumes in my old library & stg pool have "L1" as a
suffix, but the volumes in my new library & stg pool don't. Any ideas
how to switch this on for my new library or stg pool?
Iain
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Zoltan Forray/AC/VCU
Sent: 20 January 2005 15:43
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Cache Hit % below 99%
I kinda have to agree in that I have seen weirdnesses when increasing
the buffpoolsize as per the recommendations. On a fairly horsey Dell
box with 4GB of RAM and running the latest RH SMP server, when I
increased the buffpoolsize to 512MB, everything seemed to slow down,
when it comes to the TSM server responding to administration type
requests, etc.
When it comes to cache/ram sizes, I have see other situations (not
specifically TSM) where the recommendation was to NOT make the allocated
memory too large since it caused high CPU).
"Warren, Matthew (Retail)" Sent by:
"ADSM: Dist Stor Manager"
01/20/2005 10:32 AM
Please respond to
"ADSM: Dist Stor Manager"
To
ADSM-L AT VM.MARIST DOT EDU
cc
Subject
Re: Cache Hit % below 99%
?
For a long time I have believed (fairly sure originally told by IBM)
that the method is to increase the buffpool size untill cache hit goes
over 99%
Talking to a colleague, we really don't see how reducing bufpool size
can increase the cache hit%
Can anyone explain what we are missing?
Thanks,
Matt.
_-'-_
-|-
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Joni Moyer
Sent: Thursday, January 20, 2005 2:51 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Cache Hit % below 99%
Hello!
I just wanted to thank everyone for suggestions and help with this
matter!
I changed the bufpoolsize to 419430, which is 10% of the physical
memory, and then reset the bufpool and now my cache hit % is 100%. At
this point, until I see otherwise, I am going to conclude that I had the
bufpoolsize setting too high at 524288. I will continue to monitor the
cache hit % of the database, but I believe the problem to be solved.
Thank you again!
********************************
Joni Moyer
Highmark
Storage Systems
Work:(717)302-6603
Fax:(717)302-5974
joni.moyer AT highmark DOT com
********************************
"Curtis Stewart"
AWSON.COM>
To
Sent by: "ADSM: ADSM-L AT VM.MARIST DOT EDU
Dist Stor
cc
Manager"
Subject
.EDU> Re: Cache Hit % below 99%
01/20/2005 09:33
AM
Please respond to
"ADSM: Dist Stor
Manager"
.EDU>
What is your buffpool setting? Run "query option" and look for the
buffpoolsize. Look in the dsmserv.opt file and read the comments about
this parameter, then look in the server manual for this too.
curtis.stewart AT lawson DOT com
Joni Moyer
Sent by: "ADSM: Dist Stor Manager"
01/20/2005 07:19 AM
Please respond to
"ADSM: Dist Stor Manager"
To
ADSM-L AT VM.MARIST DOT EDU
cc
Subject
Cache Hit % below 99%
Hello All!
I have noticed that the cache hit % is below 99%. This is a newly
defined TSM 5.2.2.5 server on an AIX 5.2 OS. Are there any special
parameters/definitions that could contribute to the percentage being so
low? Thanks!
Available Space (MB): 24,576
Assigned Capacity (MB): 19,484
Maximum Extension (MB): 5,092
Maximum Reduction (MB): 15,000
Page Size (bytes): 4,096
Total Usable Pages: 4,987,904
Used Pages: 45,207
Pct Util: 0.9
Max. Pct Util: 0.9
Physical Volumes: 3
Buffer Pool Pages: 131,072
Total Buffer Requests: 132,692
Cache Hit Pct.: 95.15
Cache Wait Pct.: 0.00
Backup in Progress?: No
Type of Backup In Progress:
Incrementals Since Last Full: 0
Changed Since Last Backup (MB): 0.73
Percentage Changed: 0.41
********************************
Joni Moyer
Highmark
Storage Systems
Work:(717)302-6603
Fax:(717)302-5974
joni.moyer AT highmark DOT com
********************************
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