HP EVA P6000 Storage - Manual (Page 71)

Setting the multipathing policy
You can set the multipathing policy for each LUN or logical drive on the SAN to one of the following:
•
Most recently used (MRU)
•
Fixed
•
Round robin
To change multipathing policy, use the VMware vSphere GUI interface under the Configuration
tab and select Storage. Then select Devices.
Figure 22 Setting multipathing policy
Use the GUI to change policies, or you can use the following commands from the CLI:
ESX 4.x commands
•
The # esxcli nmp device setpolicy --device
naa.6001438002a56f220001100000710000 --psp VMW_PSP_MRU
command sets
device naa.6001438002a56f220001100000710000 with an MRU multipathing policy.
•
The # esxcli nmp device setpolicy --device
naa.6001438002a56f220001100000710000 --psp VMW_PSP_FIXED
command sets
device naa.6001438002a56f220001100000710000 with a Fixed multipathing policy.
•
The # esxcli nmp device setpolicy --device
naa.6001438002a56f220001100000710000 --psp VMW_PSP_RR
command sets
device naa.6001438002a56f220001100000710000 with a RoundRobin multipathing
policy.
NOTE: Each LUN can be accessed through both EVA storage controllers at the same time;
however, each LUN path is optimized through one controller. To optimize performance, if the LUN
multipathing policy is Fixed, all servers must use a path to the same controller.
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