HP XP Command View Advanced Edition Software - Manual (Page 72)

the verification, we recommend that you use the drmexgverify or EX_DRM_EXG_VERIFY
command to verify the database before performing restoration or backing up data to tape.
Note that, although an option is provided for the
drmexgbackup or EX_DRM_EXG_BACKUP
command to delete transaction logs after backup without verification, if this option is used when
the database is corrupted, roll-forward recovery might not be able to be performed.
• The following are the files verified during database verification when backup is performed by using
VSS:
• Data files in the Information Store (
*.edb )
• Transaction log files that have not been committed ( *.log )
• Note on approximate periods required for database verification when a backup is performed by
using VSS:
• For Exchange Server 2003, Application Agent uses the
ESEUTIL utility to verify databases.
The table below lists the approximate amount of time required to verify a database. Note that
the approximate amount listed in the table only apply under certain conditions, and are not a
guarantee product performance.
Table 4 Approximate amount required to verify Exchange Server 2003 database for backup
by using VSS
Amount of time
required for
database verifica-
tion
Number of transac-
tion log files
(
*.log )
Capacity of the
data file (
*.edb )
System configuration for the
database server
10 seconds 2 500 MB • CPU: Pentium 4 1.5 GHz
• Memory: 1 GB
• Storage system: XP128 35 seconds 2 2 GB
• The following table lists the approximate amount of time required to verify a database for Ex-
change Server 2007.
Table 5 Approximate amount required to verify Exchange Server 2007 database for backup
by using VSS
Amount of time
required for
database verifica-
tion
Number of transac-
tion log files
(
*.log )
Capacity of the
data file (
*.edb )
System configuration for the
backup server
3 hours 5 500 GB
• CPU: 3.0 GHz x 2
• Memory: 6 GB
• Storage system: HP
XP24000
Application Agent system configurations 72