Referring to the exhibit, which two components should be examined?

The exhibit is a performance breakdown that separates latency by subsystem, including network, cluster, data, disk, QoS, NVRAM, and cloud columns. When disk latency appears in the path and the workload view indicates delay associated with storage media access, the disk layer must be examined. In systems that use external shelves, SAS connectivity is the transport path between controller and disks, so the SAS adapter is also a logical component to investigate. Cluster switches and network interface cards would be primary suspects if network or cluster latency dominated the output, but the relevant symptom in this type of support workflow points toward back-end storage access rather than client or cluster front-end connectivity. A support engineer should correlate the QoS latency center with physical topology: high disk latency can be caused by a failing disk, shelf pathing, SAS adapter, cable, or shelf module. Therefore, the two strongest components to examine are the SAS adapter and disk. References/topics: ONTAP QoS latency centers, disk latency troubleshooting, SAS path analysis, and storage back-end diagnostics.