Platform Deployment Guide › Before You Start using CA DataMinder › Configure the Management of Free Disk Space on Servers › Calculate Disk Space Values

Calculate Disk Space Values

The amount of free disk space you require essentially depends on the expected disk usage. You can calculate how much this will be using two factors:

• The rate at which CA DataMinder imports data.
• The Disk Space Check Interval. That is, how frequently CA DataMinder checks the amount of available free disk space. This setting is in the CMS policy—see next section.

For example, if CA DataMinder imports events at a rate of 50 MB per minute and the Disk Space Check Interval is set to 10 minutes, then you can potentially write 500 MB of data between disk space checks. This would mean that the Disk Space Error Level had to be at least 500 MB. To roughly calculate the Disk Space Warning Level value, multiply the Disk Space Error Level by five.

To set disk space levels

1. Expand the Machine Administration branch .
2. Right-click the CMS and choose Edit Policy or Edit Common Gateway Policy. This opens the Machine Policy Editor.
3. In the Machine Policy Editor, browse to the Data Management folder (see the policy tree in Configure event purging).
4. Specify how often free disk space is checked. Set Disk Space Check Interval to one minute.
5. Set the Disk Space Important Level, for example, to 2 GB. When CA DataMinder detects that free disk space has fallen below this level, it adds a warning to the Audit log file.

   Note: The warning level also represents the 'safe' level at which the infrastructure automatically restarts following a suspension and subsequent recovery in free disk space.

6. Set the Disk Space Error Level, for example, to 1 GB. When CA DataMinder detects that free disk space has fallen below this level, the CA DataMinder infrastructure is suspended.
7. Save the policy.