Hello Community,

I am looking for some detailed information on SRDF/A Write Pacing, we have a situation where the cache utilization is high on the Remote Array (VMAX 20 K, running v 5876.288) and reaches WP limit very frequently causing the SRDF link to drop.

We have followed recommendations and have implemented DSE pool as well as rectified any link related problems which has improved the situation a lot.

However I would like to explore the Device Write Pacing option, and see if that can improve the cache utilization on the Remote Array. I did read the below content in the SRDF CLI user guide.

" Device-level pacing is for SRDF/A solutions in which the SRDF/A R2 devices participate in TimeFinder copy sessions.

  SRDF/A device-level write pacing addresses conditions that lead to cache overflow specifically due to TimeFinder/Snap and    TimeFinder/Clone sessions on an R2 device running in asynchronous mode."

All of our R2 devices have a Gold Copy associated with it in a precopy state, if I activate write pacing on the Gold Copy devices would it improve the cache utilization, also does it cause any performance impact on the hosts masked to it ?