
430 DS8800 Performance Monitoring and Tuning
11.3 Multipathing considerations
In ESX/ESXi Server, the name of the storage device is displayed as a sequence of three to
four numbers separated by colons, for example, vmhba2:0:1:1. This naming has the following
meaning:
<HBA>:<SCSI target>:<SCSI LUN>:<disk partition>
The abbreviation vmhba refers to the physical HBA types: either a Fibre Channel HBA, a
SCSI adapter, or even an iSCSI initiator. The SCSI target number and SCSI LUN are
assigned during the scanning of the HBAs for available storage and usually do not change
later. The fourth number indicates a partition on a disk that a VMFS datastore ...