Configuration:
Servers
NBU 4.5 FP3
1 master,1 media, 2 SAN media  All Compaq G3,  2.4 GHz Xeon processor , 4 GB RAM
Windows 2k SP4 SAN attached via Emulex LP8000 HBA
STK L180 w/ 8 fiber attached drives

Netbackup Configuration:
Netbackup media server have 1 Storage unit
Each storage unit can spin 4 drives
A Storage Unit Group is configured with the storage units from both media 
servers.

All policies point to this Storage Unit Group

The Storage Unit  associated w/ the Master has the highest priority within the 
group.  Our load
almost never gets to the point where  jobs run on the secondary storage unit 
within the group.

Situation:
I have to run several concurrent  restores:
1  Netware system w/  1.7 TB,  1.8 million files  100 full target client
4  Windows 2K systems  totaling 1 TB

A virus randomly deleted numerous files on all of these servers.  Because the 
data loss is spread
out randomly, we cannot define exactly what needs to be restored and have 
decided to run a full
restore of the effected volumes, selecting "do not restore if file exists".   
Since most files were
not deleted the Netware  restore is generating an error for every file not 
restored.   We started
the restore at 6PM  last night and calculate that it will be done after 9PM 
tonight.  Since all the
backups ran from the same media server the default is to run all the restores 
from the that server.

I want run the restores of our Windows 2K environment, from our second media 
server. I know how to
configure the Media Host Override setting to accomplish this (host 
properties\master server\general
server properties tab.)

My concern is what effect this setting will have on the existing restore now 
running.   Veritas
support stated  that the Media Host Override redirection would only effect any 
new backup jobs, not
any currently running, but suggested I test this first.  Since I am over 
halfway through the
largest, and most high profile, restore I am nervous about changing any 
configuration mid stream
that could  require me to start over.

My other concern is to be prepared for a situation  requiring the full recovery 
of numerous systems
in the future I may need a configuration that takes better advantage of the 
hardware I currently
have available.
I am thinking of removing the Storage Unit Group and manually load balancing 
the backups and
restores between the 2 storage units.   Any suggestions appreciated.


Vincent Mase
Perot Systems
617 509 3355

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