SRDF/A has been enabled between two PowerMax arrays. Due to a loss of all RDF links, the SRDF/A session has been placed in a Transmit Idle state.
What happens to the cycle switching and the queue depths?
SRDF/A has been enabled between two PowerMax arrays. Due to a loss of all RDF links, the SRDF/A session has been placed in a Transmit Idle state.
What happens to the cycle switching and the queue depths?
When a loss of all RDF links occurs in an SRDF/A (Symmetrix Remote Data Facility/Asynchronous) session, the system enters a Transmit Idle state. In this state, cycle switching (the process of updating the RDF devices with the latest changes from the source) stops. Since new data can't be transmitted to the remote site due to the downed links, the transmit queue, which holds the data to be sent, will continue to accumulate data, causing its depth to increase.
Cycle switching stops; Transmit queue depth increases