Specifies the number of seconds that DFMSMSdss will wait during backup processing for quiesce data set requests to complete. Specify a value from zero to 65536 seconds (which is more than 18 hours). If you specify a value between 1 and 299 seconds, the system uses a value of 300 seconds (which equals 5 minutes).

The value specified in the DSSTIMEOUT parameter value is activated when the first instance of the SMSVSAM address becomes active in the sysplex. All subsequent SMSVSAM instances will use the same value.

You can alter the DSSTIMEOUT value dynamically in the following ways:

• Using the SETSMS DSSTIMEOUT(nnnn) command
• By adding or updating the DSSTIMEOUT parameter in IGDSMSxx parmlib member and then activating it with the SET SMS=xx command

The default is 0.