jmc
Thankyou
Bill
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Costa, Justino
Sent: 19 October 2009 10:58
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] DIRMC
Query OCCupancy STGpool=DIRTAPEPOOL
Or
select distinct NODE_NAME from OCCUPANCY where
STGPOOL_NAME='DIRTAPEPOOL'
jmc
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Bill DOURADO
Sent: segunda-feira, 19 de Outubro de 2009 9:07
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] DIRMC
Hi,
How can I find out which nodes are using DIRMC easily, I have a DIRMC
primary tape pool DIRTAPEPOOL ?
Thanks
Bill
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Andrew Raibeck
Sent: 15 October 2009 11:22
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] DIRMC
It really depends on your retore needs. Directories are a special case
of "small files". Restore performance from tape, especially for lots of
small files, will vary depending on whether you collocate by file space
or node, or if you don't collocate at all; plus how well tapes are
managed via reclamation. Storing the directories on disk will likely
benefit most those who do not collocate at all. If you back up solely to
disk, then DIRMC is probably not of significant value. As with anything
else, your mileage may vary.
Pop quiz: "TSM is designed to always restore directories first, then the
files." True? or False?
Answer: FALSE. TSM restores objects in such a way that it tries to
optimize tape mounts. If a file is restored before its parent directory
and the directory does not exist, then TSM will create the directory
(using default
attributes) and restore the file therein. Assuming the parent directory
is included in the restore specification, the directory will be restored
later.
Note: "BOTH" is also an acceptable answer if you qualified it thus: Back
in the early days of TSM, when it was called ADSM, the product did
indeed restore directories first, then the files. At the time, the major
impacted OS was NetWare because its directories were backed up to
storage pools rather than contained in the TSM server database. So DIRMC
was helpful for NetWare. If memory serves, Windows NT was not supported
initially by ADSM (probably because the OS wasn't yet GA when ADSM was
being developed), but DIRMC eventually became useful for the Windows NT
NTFS file system.
Andy Raibeck
IBM Software Group
Tivoli Storage Manager Client Product Development Level 3 Team Lead
Internal Notes e-mail: Andrew Raibeck/Hartford/IBM@IBMUS Internet
e-mail: storman AT us.ibm DOT com
IBM Tivoli Storage Manager support web page:
http://www.ibm.com/software/sysmgmt/products/support/IBMTivoliStorageMan
ager.html
The only dumb question is the one that goes unasked.
The command line is your friend.
"Good enough" is the enemy of excellence.
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 10/15/2009
05:02:34 AM:
> [image removed]
>
> DIRMC
>
> Bill DOURADO
>
> to:
>
> ADSM-L
>
> 10/15/2009 05:03 AM
>
> Sent by:
>
> "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> Please respond to "ADSM: Dist Stor Manager"
>
> Hi All,
>
> Is DIRMC still useful ? Or should I ditch it.
> Windows clients only.
> Storage Management Server for Windows - Version 5, Release 4, Level
> 2.0
>
> Many Thanks
>
> Bill Dourado
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