Adjusting default scrubbing parameters
About this task
Typically, you adjust a VOB host’s default scrubbing parameters
in response to either of these two common problems:
- Not enough space. The disk partitions in which VOB storage pools reside might fill up frequently. A more aggressive scrubbing strategy might be necessary.
- Not enough time. The scrubber utility might be taking too much time to complete, interfering with other overnight activities, such as nightly builds. A less aggressive scrubbing strategy might be necessary.
You might need to experiment. For example, adjusting scrubbing
to take place less frequently might cause disk-space problems that you did
not previously experience. Before you make any scrubbing adjustments on a
VOB host, analyze its scrubber_log file. The scrubber reference
page explains how to read this file.
Note: If you use a backup tool that
changes the time stamps in VOB storage directories, the DO and cleartext pools
in those directories might never be scrubbed. The scrubber command,
by default, scrubs objects that have not been referenced during the previous
96 hours. If such a backup tool runs every night, the access time on objects
in the pools is reset every night and the objects are never scrubbed.