What is considered high for Virtual Disk Read Latency (ms) and Virtual Disk Write Latency (ms)?

Hi vSphere community,

I know the answer is often dependent on the environment, but, what would you consider to be high values for Virtual Disk Read Latency (ms) and Virtual Disk Write Latency (ms)?

These are metrics in vCOPS that are available in All Metrics, Virtual Disk.

Thank you!