Identify Performance Degradation due to Misbehaving Disk in ONTAP
Applies to
- Data ONTAP operating in 7-Mode
- Data ONTAP 8
- ONTAP 9
Description
A disk acting abnormally can affect storage performance. Common symptoms associated with a misbehaving disk are:
- Higher latency and utilization on one disk than the rest of its partners in the same RAID group
- Back to back (B or b) Consistency Points in "sysstat" command output