TMF Operations and Recovery Guide (G06.24+)

Occasional Operations

HP NonStop TMF Operations and Recovery Guide—522417-002

3-10

Disabling/Enabling Data Volumes for Servicing

If you need to disable a configured data volume for servicing, the proper way to do so

is as follows:

1. Issue a DISABLE DATAVOLS command to shut the volume down cleanly within

the TMF environment.

2. Issue an SCF STOP DISK command to bring the volume down within the system

environment.

3. When the service work is done, issue an SCF START DISK command to bring the

volume back up within the system environment.

4. Issue an ENABLE DATAVOLS command to bring the volume back up within the

TMF environment.

If the volume was disabled long enough to have missed a regularly scheduled online

dump cycle, make online dumps of all the audited tables and files on the volume that

you want protected by the TMF file recovery feature.

Changing the Data Volume Configuration

Data volume configuration changes can have various effects on your TMF system.

Before you change the configuration, refer to system reports about typical audit-trail

capacity usage, transactions generated during normal and peak periods, and disk

space on your system: you should keep such reports in a notebook for easy reference

(see Keeping Current System Information on page 2-29).

This section discusses how data volume configuration changes can affect your system.

Before you change the configuration, consider the relationships between the data

volumes and audit trails on your system.

The DATAVOLS Configuration Commands

You can make the following data volume configuration changes only while TMF is

running:

•

To add a data volume, use the ADD DATAVOLS command.

•

To change the recovery mode attribute, use the ALTER DATAVOLS command.

•

To delete a data volume, use the DELETE DATAVOLS command.

These commands can be issued only by members of the super user group. See the

TMF Reference Manual for instructions on using these commands.