Hi Wanda,

This indeed sounds puzzling. The only thing I can think of -- and
admittedly this is a shot in the dark based on your description -- is if
LAN-free is enabled for the backup server, in which case the data would be
served from tape.

- Andy

____________________________________________________________________________

Andrew Raibeck | Tivoli Storage Manager Level 3 Technical Lead |
storman AT us.ibm DOT com

IBM Tivoli Storage Manager links:
Product support:
http://www.ibm.com/support/entry/portal/Overview/Software/Tivoli/Tivoli_Storage_Manager

Online documentation:
https://www.ibm.com/developerworks/mydeveloperworks/wikis/home/wiki/Tivoli
Documentation Central/page/Tivoli Storage Manager
Product Wiki:
https://www.ibm.com/developerworks/mydeveloperworks/wikis/home/wiki/Tivoli
+Storage+Manager/page/Home

"ADSM: Dist Stor Manager" <ADSM-L AT vm.marist DOT edu> wrote on 2013-06-17
21:45:04:

> From: "Prather, Wanda" <Wanda.Prather AT ICFI DOT COM>
> To: ADSM-L AT vm.marist DOT edu,
> Date: 2013-06-17 21:45
> Subject: Another VE mystery - restoring from tape - but shouldn't be
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT vm.marist DOT edu>
>
> TSM 6.2.3
> Backup done with TSM VE 6.4.0.0 and TSM client 6.4.0.0.
>
> VMCTLMC points to a dedicated sequential pool on fast disk.  That
> pool has no NEXTSTGPOOL defined.
>
> VMMC points backup data to a deduplicated sequential pool on fast
> disk storage.
> After the server dedups it there, it migrates to a slower NAS-based
> deduplicated storage pool on disk.
> When that slower pool fills, data migrates out to tape.
> DEDUPREQUIRESBACKUP set to YES.
> (No client-side dedup used.)
>
> We have done full VM restores through the plug-in and file-level
> restores through the recovery agent in the past,
> including testing restores from tape, with no problems.
>
> Now one of the customer's VM datastores has met with an unfortunate
> accident in a dark alley.
> We need to restore 7 full VM's.
>
> From the dsmc command line, restore vm victim1
> datastore=newhealthyone starts up OK, but was calling for a zillion
> tape mounts, and therefore was restoring at the rate of about 4GB
> per 24 hours.
>
> So, we did MOVE NODEDATA DCNAME FILESPACE=victim1 to bring the data
> from the tape back to the sequential disk pool.
> Cranked up again, same result - requesting a zillion tape mounts.
>
> So riddle me this:
> If the control information is on disk, and the filespace is back on
> disk, what are the tape mounts going after?
>
> (FWIW, tried upgrading VE to 6.4.0.1 and data mover to 6.4.0.4, no
> difference.)
> Signed,
> Confused by VE.  Again.
>
> Wanda Prather  |  Senior Technical Specialist  | Wanda.Prather AT icfi DOT com
|
> www.icfi.com
> ICF International  | 401 E. Pratt St, Suite 2214, Baltimore, MD
> 21202 | 410.539.1135 (o)
>