gtpo1m18Operations

ZAMOD-Alter DASD Status

Use this command to change the status of a direct access storage device (DASD) from online to offline, and offline to online. This command updates the module file status table (MFST) and module cross-reference table to reflect the configuration change. A duplicate update also starts when the DASD is brought online.

Using ZAMOD?

ZMCPY UP or ZMCPY DOWN are the preferred commands. The ZAMOD command, while still supported, actually issues a ZMCPY UP or ZMCPY DOWN command internally. Online messages that are returned by the TPF system indicate that a ZMCPY command was entered.

Note:
In some places, DASD is also referred to as module.

Requirements and Restrictions

None.

Format




module
is a 1- to 3-digit hexadecimal symbolic input module number for real-time packs or the pseudo module number for general files.

device
is a 3- to 4-digit hexadecimal device address.

U
places the DASD online (up).

D
places the DASD offline (down).

Additional Information

Examples

The status of the specified DASD is allowed to change from online to offline in the following example.

+--------------------------------------------------------------------------------+
|User:   ZAMOD 4A EE0 D                                                          |
|                                                                                |
|System: MCPY0294I 14.46.36 OK MOD 04A OFF DEVICE 0EE0                           |
+--------------------------------------------------------------------------------+

Related Information

See TPF Database Reference for more information about module up and module down processing.