Previously it makes the configuration of the class for the endorsement of
the DBs of MS Exchange of the following way:
 "Microsoft Information Store:\First Storage Group" 
In order to test with but of a DB, 2 were created new DBs for a total of 3,
of the following way: 
"Microsoft Information Store:\First Storage Group" 
"Microsoft Information Store:\Second Store Group" 
"Microsoft Information Store:\Tercera Store Group" 

The backup finalizes: 
29/10/2003 04:23:15 p.m. - positioned; position Time: 000:02:25 29/10/2003
04:23:15 p.m. - begin writing 29/10/2003 04:50:26 p.m. - end writing; write
Time: 000:27:11 the requested operation was partially successful(1) The
backup was successfully completed, but some you case out may have been busy
or unavailable for backup.For See the problems report or the client's logs
dwells details. 

Reviewing log read the following errors: ERR - XCHG_BackupRead()
FS_ReadObj() Failed! 0xFFFFFE30:FS_COMM_FAILURE ERR - failure reading
Exchange 2000 object: Microsoft Information Store:\First Storage
Group\Public Folder Store (VERITAS) (0xFFFFFE30:FS_COMM_FAILURE) 

For each one of the DBs 
look for in support.veritas.com and encontre on the matter information. 

Thaks