The number of FIM events depends upon the number of files monitored and the frequency of
changes to monitored files.The number of events is difficult to predict, but the impact to database
storage is minimal.
Each FIM event adds approximately 3 kB to the database. If your organization generates one
million events per month, the annual database growth is:
3 kB/event × 1,000,000 events/month × 12 months/year × 0.000001 GB/kB = 36 GB/year
Database storage requirements for file versioning
The File Integrity Monitoring feature of McAfee Policy Auditor software allows you to store up
to six versions, including the file baseline, of text files from managed systems. The software
does not support versioning for non-text files.
Version database sizing chart
This chart helps you calculate the database storage requirements for versioned files.The
Monitored File Size column is the size of the file in megabytes for which you are storing version
text. The Versions row is the number of file versions that you are storing.
65432Versions
Database requirement per 1,000 systems (GB)
Monitored File Size (MB)
0.2870.2290.1720.1150.05731
0.3740.2990/2240.1490.07472
0.4920.3930.2940.1960.09833
0.6910.5530.4150.2760.1384
Calculating versioning database storage requirements
A corporation follows this policy for maintaining file versions:
• Maintains file text for 5 versions of 2 MB files on 200,000 systems.
• Maintains file text for 4 versions of 1 MB files on 20,000 systems.
• Maintains file text for 3 versions of 4 MB files on 140,000 systems.
• Maintains file text for 6 versions of 3 MB files on 100,000 systems.
Calculate the approximate database size:
1 Look up the corresponding values in the table under Version database sizing chart, and
note these results:
Database size
(GB)
=Value from
chart
Monitored File Size
(MB)
...running on number of
systems (thousands)
Versions
59.800.299(2)2005
3.440.172(1)204
38.640.276(4)1403
49.200.492(3)1006
2 To determine the database size, multiply the number of systems (in thousands) by the
value that you obtained from the Version database sizing chart.
3 Calculate the total amount of space needed:
Pre-Installation Tasks
Database considerations and support
17McAfee Policy Auditor 6.0.0 Installation Guide
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