Installation guide

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VMware ESX Server Administration Guide
Using Persistent Binding
You can specify persistent bindings for your Fibre Channel host bus adapters (HBAs).
With persistent binding, ESX Server assigns specific target IDs to specific Fibre Channel
SCSI devices. This target ID association is retained from reboot to reboot unless
changed by you.
Persistent binding is particularly useful if you are using raw disks with ESX Server. A
raw disk is directly mapped to a LUN or physical disk drive on your storage area
network (SAN). ESX Server directly accesses the data on this disk as a raw device (and
not as a file on a VMFS volume).
You can persist bindings through the VMware Management Interface or through the
service console. For complete information on persisting bindings through the
management interface, see Configuring Storage Area Networks on page 232.
Determining Target IDs through the Service Console
If you prefer to use the service console, type cat /proc/scsi/
<FC_SCSI_driver>/<adapter_number> to determine the target IDs.
Example Output for an Emulex HBA
#cat /proc/scsi/<FC_SCSI_driver>/<adapter_number>
.
.
.
Portname: 10:00:00:00:c9:32:23:49 Nodename:
20:00:00:00:c9:32:23:49
Link Up - Ready:
PortID 0x21900
Fabric
Current speed 1G
lpfc0t00 DID 021500 WWPN 20:00:00:60:16:3c:ad:13 WWNN
20:00:00:60:16:3c:ad:13
where:
Portname: 10:00:00:00:c9:32:23:49 Adapter port name
Nodename: 20:00:00:00:c9:32:23:49 Adapter node name
lpfc0t00 0 (lpfc0) is the host bus adapter and 00 is the
target
WWPN 20:00:00:60:16:3c:ad:13 Target world wide port name (WWPN)
WWNN 20:00:00:60:16:3c:ad:13 Target world wide node name (WWNN)