IBM SY44-5902-05 manual Work with disk units, Work with diskette data recovery, Options

vLicensed Internal Code log - For details, see “Licensed Internal Code (LIC) log” on page 29.

vMain storage dump manager - For details, see “Main storage dump manager” on page 30.

vHardware service manager - For details, see Chapter 2, “Hardware Service Manager” on page 45.

Work with active service tools

Select this option from the System Service Tools display. It lists active service tools and their status. You can start service tools and leave them active while you start another service tool. Use this function to work with a service tool you left active or to end an active service tool. The status of a service tool shows whether the service tool is active or ending. For more information, see “Work with active service tools” on page 24.

Work with disk units

Select this option from the System Service Tools display. It displays tools that can be run for disk units. You can do the following:

vDisplay disk configuration

vDisplay checksum configuration

vCalculate checksum configuration

vWork with auxiliary storage pools (ASP) threshold

vAdd units to ASPs

vWork with device parity protection

vWork with disk unit recovery

vWork with disk unit information

vCalculate mirroring capacity

This option is a subset of the functions available from dedicated service tools (DST). The complete function is not available from SST in full paging environment. For more information, see “Work with disk units” on page 13.

Work with diskette data recovery

Select this option from the System Service Tools display. It allows you to read data from a diskette that contains cyclic redundancy check (CRC) errors. CRC errors occur when the system finds data on a diskette that is not readable during a read operation. Normally, when the system finds a CRC error, you cannot read the diskette past the point of the failing sector. By using this option, you can read diskettes that contain sectors with CRC errors.

The iSeries server can use diskettes for saving and restoring system objects. One or more objects can be stored on a diskette. Whenever the system finds a diskette that contains a bad sector during a read operation, the operation ends. A bad diskette sector, which causes a CRC error, can result from failure in the diskette or from wrong handling. The Work with diskette data recovery option allows you to read data from a diskette, correct any failing sectors present on the diskette, then write the new data to a new diskette.

Options:

vAlter diskette data

This option allows you to change the data in any sector on a diskette. For more information, see “Alter diskette data” on page 285.

vRead data from diskette

284Service Functions V5R2