Hi,

What type of collocation are you using. Filespace or node?

Regard,

Karel

-----Oorspronkelijk bericht-----
Van: Alan Davenport [mailto:Alan.Davenport AT SELECTIVE DOT COM]
Verzonden: dinsdag 14 oktober 2003 14:38
Aan: ADSM-L AT VM.MARIST DOT EDU
Onderwerp: Re: Too many DRM tapes leaving 3949 library daily.


Believe me, I would if I could. It's a management decision. They want our
core critical servers restored as quickly as possible so they've mandated
that the offsite pool is collocated. (It's frighteningly easy for a server
to be included on the "Critical" list.) The problem  remains however, WHY am
I seeing 150-160 tapes for the offsite pool ejected from the library every
day while there are only 45 or so servers writing to the pool? Is each
server's data begin spread over 3 different tapes? If so this is not an
effective use of tapes. Not to mention counter productive for reducing the
amount of tape mounts required for a restore. What's going on here? Is there
any way for me to get this under control? Is this NORMAL behavior? If so
perhaps I have some ammunition for my argument against collocating the
offsite pool.

            Take care,
                Al

Alan Davenport
Senior Storage Administrator
Selective Insurance Co. of America
alan.davenport AT selective DOT com
(973) 948-1306


-----Original Message-----
From: Miles Purdy [mailto:PURDYM AT FIPD.GC DOT CA]
Sent: Tuesday, October 14, 2003 7:39 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Too many DRM tapes leaving 3949 library daily.


Make sure that your OFFSITE pool is NOT collocated.
miles


----------------------------------------------------------------------------
------------------
Miles Purdy
System Manager
Information Systems Team (IST),
Farm Income Programs Directorate (FIPD),
Agriculture and Agri-Food Canada (AAFC)
Winnipeg, MB, CA
Office contact:                                            Mobile contact:
 purdym AT fipd.gc DOT ca
purdym AT rogers.blackberry DOT net
 ph: (204) 984-1602 fax: (204) 983-7557        Cell: (204) 291-8758

"If you hold a UNIX shell up to your ear, can you hear the C?"
----------------------------------------------------------------------------
---------------------

>>> Alan.Davenport AT SELECTIVE DOT COM 13-Oct-03 1:17:37 PM >>>
Hello Group,

               I am fairly new to using an automated library. We've just
moved to one from a manual library. I am having a problem with too many
tapes from my offsite pool leaving the library every day when MOVE DRM is
run. Our core group of critical servers are going to a collocated pool. The
number of nodes using this pool is approximately 45. My problem is that
between 150 and 160 tapes are ejected from the library on a daily basis!  An
equal number of tapes are returning from offsite. I expected that the number
of tapes going offsite each day would be approximately equal to the number
of nodes using the collocated pool (Plus a few more tapes for the
non-collocated copypool and the DBB). Any advice on what I'm doing wrong?

        I am running TSM 5.2.0.0 on an AIX-RS/6000. I have a 3494 library
which is shared with an OS/390 mainframe with 6 3590 drives dedicated to
TSM. Below are my maintenance scripts:


Name           Line       Command

               Number
----------     ------
------------------------------------------------------------
DAILY_MAI-     1          cancel expiration

NT1

               3          run healthcheck

               4          ba stg proddisk 3590prodoffsite maxpr=6 wait=yes

               5          ba stg critdisk 3590critoffsite maxpr=6 wait=yes

               6          upd stg critdisk highm=10 lowm=0

               11         upd stg proddisk highm=10 lowm=0

               16         delete sch migrate_check t=a

               21         def sch migrate_check t=a cmd='run migrate_check'

                           startt=now+0:10 active=y perunits=onetime


Name           Line       Command

               Number
----------     ------
------------------------------------------------------------
MIGRATE_C-     1          select * from processes where process='Migration'

HECK

               6          if(rc_ok) goto resch

               11         delete sch migrate_check t=a

               16         upd stg critdisk highm=90 lowm=70

               21         upd stg proddisk highm=90 lowm=70

               26         run daily_maint2

               31         exit

               36         resch:

               41         q stg critdisk

               46         q stg proddisk

               51         delete sch migrate_check t=a

               56         def sch migrate_check t=a cmd='run migrate_check'

                           startt=now+0:10 active=y perunits=onetime

               61



Name           Line       Command

               Number
----------     ------
------------------------------------------------------------
DAILY_MAI-     1          ba stg 3590crit 3590critoffsite maxpr=3 wait=y

NT2

               6          ba stg 3590prod 3590prodoffsite MAXPR=2 wait=y

               11         run daily_maint3



Name           Line       Command

               Number
----------     ------
------------------------------------------------------------
DAILY_MAI-     1          cancel expiration

NT3

               6          ba db t=f devc=3590tape wait=yes

               11         if(rc_ok) goto db_done

               16         goto retry

               21         db_done:

               26         prepare

               31         backup volhist

               36         backup devconfig

               41         expire i quiet=yes

               46         run startreclaim

               51         /* line removed */

               56         /* line removed */

               61         /* line removed */

               66         exit

               71         retry:

               76         del sch daily_maint3 t=a

               81         def sch daily_maint3 t=a cmd='run daily_maint3'

                           startt=now+0:01 active=y perunits=onetime



Alan Davenport
Senior Storage Administrator
Selective Insurance Co. of America
alan.davenport AT selective DOT com
(973) 948-1306