HYDIN0922I (OP0922) Host Write Throttling on tape attach cache partition started. Reasons (Premigration steady state: reason bit0, Low on cache free space: reason bit1, Immediate Copy Throttling: reason bit2, Excessive cached content for copy: reason bit3, Grid premigration steady state: reason bit4, Low on partition free space: reason bit5)

Explanation

Host Write Throttling on tape attach cache partition started because of the following reasons:
  • Premigration steady state: Data size in Premig queue exceeds Premig Throttling Threshold.
  • Low on cache free space: Cache free space is low.
  • Immediate copy throttling: Immediate copy related with the cluster remains in Copy queue for long time.
  • Excessive cached content for Copy: Cache is getting full by amount of data which has not been copied to other cluster yet.
  • Grid Premigration steady state: There is an immediate Copy related with the cluster and Premig Throttling is being applied in the peer cluster for the RUN copy.
  • Low on partition free space: Partition free space is low.

Operator response

Check if Host Write Throttling started because of expected reasons.