What is measured in total bytes read and written per second for disk health in ESXi?

Throughput is an important metric when assessing disk health in an ESXi environment, as it represents the total number of bytes that are read and written to the disk per second. This measurement provides a clear insight into how well the disk is performing in terms of data transfer rates. High throughput indicates that the disk is efficiently handling read and write operations, which is crucial for optimal performance in virtualized environments.

Understanding throughput is essential because it helps system administrators identify potential bottlenecks or performance issues. If the throughput is low, it may signal that the disk is becoming a limiting factor for overall system performance, potentially impacting virtual machine responsiveness and application performance.

The other options, while relevant to disk performance in different contexts, do not specifically represent the characteristic of total bytes read and written per second. For instance, command queue latency relates to the delay in processing commands rather than the volume of data being transferred. Aborted commands might indicate issues in reliability or stability but do not directly measure throughput. Lastly, the number of datastores refers to the quantity of virtual storage environments rather than their performance characteristics concerning data transfer speeds.