E-Series performance degradation drive check condition on FlexArray
Applies to
- E-Series E5600,EF5700
- ONTAP 9.x
- SANtricity OS 08.40.50.00 and above
- Disk type HUS724040ALS640 Firmware MS04
Issue
- FlexArray poor performance
- Many Set Target Port Groups (STPG) error in the major event log
A Set Target Port Groups (STPG) command was received for this volume and caused the volume to be transferred - Volume xyz ----> hbaAlias: abc hbaWWN: lkj
Example error on an ONTAP Host:
ERROR mlm.non.optimized.TPusage: Detected non-optimized usage of a array's target port. WWPN: 1234567890, average service time: x0000us, average latency: y00000us