- DATA ONTAP 9
- When reads or writes are slow for the host, Little's Law: N (concurrency) = λ (ops) * W (wait time in seconds) can be applied to determine concurrency of a volume.
- This is useful because it is a quick way to measure if ONTAP is getting enough workload or a delay exists at network or host using math.
Note: W is short for wait time, but ONTAP uses average response time which is a slightly different measurement than client wait time. The concept is the same in practice.