Hello Nick,
thanks for your answer - because of the 2 stage storagepool there I was
missing the devclas definitions ( iadd here
at the bottom)
So the primary pool is a random-access- StoragePool with a device class of
disk so far to be accessed by lots of
simultanous sessions and really not quite large - 2 Volumes with together 10 GB
is quite enough for a small/medium
server. The final destination of the 'dir-data' is via migrating from the
disk-pool into a storage-pool
with a device class of file. Why I was using this was because of the effect
that at least with the TSMV5 Version it
soon takes too much time to make a copy-operation of such a disk-pool - it
simply took
enourmous time to have the 'backup stg -Process' being traversed through such a
thing.
It may be that the sequential accessed media for such data is better in the
performance but I haven' measured this.
At least I could not not see
So it works much better with the file-volumes in the end , but the dirmc itself
needs to point to the diskdirs-pool
to handle a lot of sessions for lots of simultanous incoming data.
The reason using the DATAFormat=nonblock format was because of an older
ibm-V5-setup preferences cookbook
... which I cannot find anymore... It still works without problem - but
possibly this 'DATAFormat=nonblock' is no
more suitable/needed at TSM V6 ?
Rainer
define STG DISKDIRS DISK hi=60 lo=20 nextstg=filedirs
DEFINE DEVCLASS FILEDIR DEVTYPE=FILE FORMAT=DRIVE MAXCAPACITY=1000M
MOUNTLIMIT=200 DIRECTORY=/filedir SHARED=NO
define stg filedirs FILEDIR maxscr=0 reused=3 hi=100 lo=30 COLlocate=group
reclaim=100 DATAFormat=nonblock
Am 30.10.2013 13:09, schrieb Marouf, Nick:
Hi Rainer,
We had to use DIRMC, even though I've heard the same that it is no
longer needed. Some of the servers I backup are so large that without DIRMC,
the restores would take a substantial time to complete, I've also had an issue
were the GUI had stopped working, and enabling DIRMC on these very large server
solved the problem (http://www-01.ibm.com/support/docview.wss?uid=swg21162784 )
With only 3 servers using DIRMC, using your query below I have over 5,000,000
objects in the dirmc stg pool. This really saves time for laying out the
directory structure when restoring large folders/subfolder.
As far using a different nodeblock format, IBM preferred format is native. Are
you seeing considerable changes with the nonblock option?
What would be the benefit of the two stage storage pool? Are both using a
devclass of disk?
-Nick
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Rainer
Wolf
Sent: Wednesday, October 30, 2013 6:54 AM
To: ADSM-L@VM.MARIST.EDU
Subject: [ADSM-L] Moving from TSMV5 to V6 / question on DIRMC
Hello All,
we are currently using tsm V5 Server and soon will be moving to TSM V6,
starting again from scratch with a brandnew ts3500 library and the new 3592-c
drives.
The new TSM-Server Setups are to be reviewed and now I have some questions on
the DIRMC feature which we distribute so far via server defined clientoptionset.
on dirmc there are two reasons for me why using it:
a) some tape mounts can be avoided using online pools of directories,links,...
...we have not much drives
b) the roughly quite easily producable output on the balancing
between 'normal files' and 'directories + 0-byte-files + links + ...'
can be shown with simple 'per-storage-pool-basis'
( select sum(num_files),stgpool_name from occupancy group by
stgpool_name )
or simply can be displayed on a 'per-node-basis'
( with simly 'query occu stg=<diskdirpool>'
Especially the feature b) has often directly helped finding the basic source of
occuring strange problems.
One question now is : with TSM 6 thre may be no need to use dirmc anymore, is
it possibe that directory-entries ( with extended acl-info) are then always
stored in the database and never going to tapes ?
If it is okay and not quite abnormal to use the dirmc then the other question
is:
is it still okay to use the following way defining a 2-Stage- Storagepool-setup
and using the 'DATAFormat=nonblock' for the file-volumes fetching those dikdir
data ?
like
define stg filedirs FILEDIR maxscr=0 reused=3 hi=100 lo=30 COLlocate=group
reclaim=100 DATAFormat=nonblock
define STG DISKDIRS DISK hi=60 lo=20 nextstg=filedirs
any hints are welcome
Rainer
--
------------------------------------------------------------------------
Rainer Wolf eMail: rainer.w...@uni-ulm.de
kiz - Abt. Infrastruktur Tel/Fax: ++49 731 50-22482/22471
Universitaet Ulm
--
------------------------------------------------------------------------
Rainer Wolf eMail: rainer.w...@uni-ulm.de
kiz - Abt. Infrastruktur Tel/Fax: ++49 731 50-22482/22471
Universitaet Ulm
