Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 158

Ensuring a Single Path
to the Storage Array
150
9. To create the volume and the volume group, click Finish.
The Create Volume Wizard – Creation Successful dialog appears with a
prompt to configure another boot volume.
10. Click No.
11. Click OK.
12. Use the Storage Partitioning premium feature to map the volume to the host by
using LUN 0.
NOTE For additional information about how to map volumes that use Storage
Partitioning, refer to the online help topics in the Array Management Window.
"Ensuring a Single Path to the Storage
13. Go to
After you have configured a boot volume, make sure that there is a single path to the
storage array. The path must be configured to the controller that owns the boot volume
(controller A).
NOTE If you removed a previously installed version of RDAC in a root-boot
environment, you do not need to remove the installed version of RDAC again.
1. Choose one of two methods to make sure that the alternate path to the storage
array is removed:
Method 1 – Remove the host interface cable to the alternate path.
—
Method 2 – Modify NVSRAM to temporarily disable RDAC multi-path
—
functionality at the storage array by performing these substeps.
a. Select the storage array In the Enterprise Management Window.
b. Select Tools >> Execute Script.
The Script Editor dialog appears.
c. In the upper half of the Script Editor dialog, type these commands at the
prompt, and press Enter.
set controller[a]
HostNVSRAMByte[1,0x16]=0xFF,0x20;
set controller[b]
HostNVSRAMByte[1,0x16]=0xFF,0x20;
d. Select Tools >> Execute Only.
e. For the NVSRAM modifications to take effect, turn off the power to the
controller tray, wait 30 seconds for the controller tray to turn off the power,
and turn on the power again.
Array" on page 150.