Removing documents from disk storage
The options specified on the Storage Management
tab when the application group is created determines when documents
are eligible for deletion from disk. The options on the Storage Management
tab are as follows:
- Cache Data for n Days. The length of time in days to keep documents on disk. After a document reaches this value, it is eligible to be deleted from disk.
- Life of Data. The length of time in days to maintain documents on the system. If you specify Never Expire, then expiration processing is disabled for the application group.
- Expiration Type. Determines whether one or more documents
are eligible to be deleted at a time. For example, by default, the
Load expiration type means that the set of documents that were loaded
together will also expire together. Alternative: Segment (in contrast to Load) is another possible choice for expiration type. This is the first time that a segment has been mentioned. Up to now, the term documents has been used, which is the data object that most people associate with the IBM® Content Manager OnDemand system. However, administrators who maintain the system may also work with segments, which represent many documents, and storage objects, which are containers of compressed documents that are maintained by the storage managers.
The disk storage manager does not delete expired documents from disk until expiration processing runs. The STRDSMOND command is the expiration utility. You can schedule the STRDSMOND command to run automatically or you can run it manually. You should make sure that the STRDSMOND command runs periodically so that the disk storage manager can reclaim the space that is occupied by expired documents.