If your storage adapters experience performance problems, use the esxcli storage san commands to identify the problems.

Problem

Storage adapters experience performance and I/O problem.

Solution

Use the esxcli storage san commands to obtain and display events and statistics for the adapters. You can analyze the commands' output to identify the adapter problems and to find appropriate solutions.

Table 1. esxcli storage san commands
Command Description Options
esxcli storage san fc | iscsi | fcoe | sas list List adapter attributes.
Note: iSCSI applies to software iSCSI only.
-- adapter | -A

Adapter name (vmhbaX), or none, to list information for all adapters of the particular type.

esxcli storage san fc | iscsi | fcoe | sas stats get Get adapter statistics.
Note: iSCSI applies to software iSCSI only.
-- adapter | -A

Adapter name (vmhbaX), or none, to list information for all adapters of the particular type.

esxcli storage san fc | fcoe | sas reset Reset a particular adapter. -- adapter | -A

Adapter name (vmhbaX).

esxcli storage san fc events get Retrieve events for Fibre Channel adapters. -- adapter | -A

Adapter name (vmhbaX), or none, to list information for all Fibre Channel adapters on the system.