Verifying system and disk space requirements

The InfoSphere® Information Server recovery tool verifies that your computers meet the system requirements for the version to which you are performing back up or restore operations, and ensures that the systems have enough disk space for the back up and restore directories and data.

About this task

The InfoSphere Information Server , Version 9.1 recovery tool backs up and recovers only Version 9.1 of InfoSphere Information Server. System requirements, such as the version of the operating system or database, might change between releases of the software. Before you begin the back up or restore operation, verify that your computers meet all of the system requirements for the version of InfoSphere Information Server to which you are performing back up or restore operations.

The InfoSphere Information Server recovery tool requires two directories, the work directory and the archive directory. The tool checks to ensure that each computer has enough disk space for these directories.

Procedure

See this topic for complete information about the system requirements for InfoSphere Information Server, Version 9.1: http://publib.boulder.ibm.com/infocenter/prodguid/v1r0/clarity/softwareReqsForProduct.html.
Verify the following disk space requirements on the systems that you are backing up:
- The work directory for the Services tier is the database size plus 15%.
- The work directory for the Engine tier is the combined size of all project directories plus 15%.
- The archive directory is 25% of the size of the work directory.
Verify the following disk space requirements on the systems that you are restoring data to:
- The work directory for the Services tier is the size of the source work directory plus 10%. In addition, the Services tier must have enough disk space for the migrated database.
- The work directory for the Engine tier is the size of the target work directory plus 10%. In addition, the Engine tier must have enough disk space for the migrated projects.