Setting the multipathing policy – HP 6400.8400 Enterprise Virtual Array User Manual
Page 65
Perform one of the following procedures to load the NVRAM:
•
If you have a HP ProLiant blade server:
Download the supported FCA BIOS update, available on
to a virtual floppy.
For instructions on creating and using a virtual floppy, see the HP Integrated Lights-Out
user guide.
1.
2.
Unzip the file.
3.
Follow the instructions in the readme file to load the NVRAM configuration onto each
FCA.
•
If you have a blade server other than a ProLiant blade server:
Download the supported FCA BIOS update, available on
1.
2.
Unzip the file.
3.
Follow the instructions in the readme file to load the NVRAM configuration onto each
FCA.
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
•
Preferred
•
Round robin (applicable only for ESX4.x and ESXi5.x)
ESX 3.x commands
•
The # esxcfg-mpath --policy=mru --lun=vmhba0:0:1 command sets vmhba0:0:1
with an MRU multipathing policy.
•
The # esxcfg-mpath --policy=fixed --lun=vmhba0:0:1 command sets
vmhba1:0:1
with a Fixed multipathing policy.
•
The # esxcfg-mpath --preferred --path=vmhba2:0:1 --lun=vmhba2:0:1
command sets vmhba2:0:1 with a Preferred multipathing policy.
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.
VMware
65