Mainframe Enablers TimeFinder SnapVX and zDP 8.5 Product Guide

Indicates whether snapshot preprocessing should be automatically performed, before the ACTIVATE command is run or as part of the LINK command processing.

Preprocessing includes the following steps:

1. Validate the request.
2. Bring the target device offline.
3. Make the target device Not Ready to the channel.
4. Issue the operating environment request to pair the two devices together.

The PRESNAP parameter can be specified on the ACTIVATE command.

The PRESNAP parameter only applies to regular input (after a //QCINPUT DD * JCL statement) LINK statement that references a GROUP. The PRESNAP parameter is only valid if GROUP is also specified.

If both PRESNAP and POSTSNAP parameters are not specified, and a LINK operation is initiated that is not group processing, PRESNAP and POSTSNAP are automatically set to YES.

Syntax

PRESNAP({Yes|No})

Options

Yes

Perform snapshot preprocessing automatically before the ACTIVATE command.

No

(Default) Perform snapshot preprocessing as part of LINK processing.