SRDF/A control actions

SRDF transparently remotely mirrors production or primary (source) site data to a secondary (target) site to users, applications, databases, and host processors.

Table 1. SRDF/A control actions

Action	Activate Type	Write Pacing Type	Description
Activate	DSE	N/A	This type activates the SRDF/A Delta Set Extension feature. This feature extends the available cache space by using device SAVE pools.
	Write Pacing - this feature extends the availability of SRDF/A by preventing conditions that result in cache overflow on both the R1 and R2 sides.	Group write pacing	This type activates SRDF/A write pacing at the group level.
		Group and Volume Write Pacing	This type activates SRDF/A write pacing at the group level and the volume level.
		Volume Write Pacing	This type activates SRDF/A write pacing at the volume level.
	Write Pacing Exempt	N/A	This type activates write pacing exempt. Write pacing exempt allows you to remove a volume from write pacing.