HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0204, January 2010)

2. Disable AutoFailback:
a. Open the /kernel/drv/scsi_vhci.conf file in a text editor.
b. Disable the automatic failback capability by changing the auto-failback entry to:
auto-failback="disable";
c. Save and exit the file.
d. Reboot the system with the # shutdown -g0 -y -i6 command.
3. Verify the system is working:
# cfgadm –al
# devfsadm –Cv
# format (to see all the volumes mapped)
4. Make sure you are using the correct HBA driver.
VMware multipathing
For VMware, the multipathing policy must be set to the Most Recently Used (MRU) path.
Windows multipathing
1. Go to http://h18006.www1.hp.com/products/sanworks/softwaredrivers/multipathoptions/
windows.html.
2. Under Select your product, click Windows MPIO DSM for SVSP. This product contains an
active-passive multipath driver.
3. Select your operating system.
4. Select your software/driver language.
5. Select HP MPIO Full Featured DSM, and then click Download for that product version.
6. Read and print the readme file included with the downloaded driver. The file contains installation
instructions and any limitations.
7. Disconnect the server from the SAN.
8. Install the multipathing drivers.
In a configuration with a large number of devices configured with large number of paths, there can
be a long boot up time as Windows detects devices and loads drivers. After the drivers are installed,
you must enable persistent binding to maintain consistent driver letters. Described below are procedures
for QLogic and Emulex HBAs.
QLogic HBAs with Windows
To enable persistent binding with QLogic HBAs:
1. Launch Sansurfer. This application can be downloaded from hp.com or qlogic.com.
2. Connect to Localhost. The utility displays all QLogic HBAs recognized in the system.
3. Select the port on the HBA to be enabled for persistent binding.
4. Select the Target Persistent Binding tab.
Adding devices to the domain40