HP 3PAR Upgrade Pre-Planning Guide

3. The Administrator will then be prompted to provide a Vendor String, which is used
to distinguish between different vendor types. The script will only modify those devices
whose Vendor String matches the one that has been entered into the prompt.
Enter 3PAR in the prompt to allow the script to be executed on all HP 3PAR LUNs currently
presented to the host as shown in the output below:
Enter Vendor String: 3PAR
4. The script will then iterate through all HP 3PAR LUNs currently present on the host and
set the Attributes registry value to 0. In order to verify that the Attributes value
for all HP 3PAR LUNs were properly modified, issue the following command:
Get-ItemProperty -path
"HKLM:\SYSTEM\CurrentControlSet\Enum\SCSI\Disk*Ven_3PARdata*\*\Device
Parameters\Partmgr" -Name Attributes
The Attributes value should be set to 0 as shown in the example below:
PSPath :
Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\SCSI\Disk&Ven_3PARdata&Prod_VV\5&381f35e2&0&00014f\Device
Parameters\Partmgr
PSParentPath :
Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\SCSI\Disk&Ven_3PARdata&Prod_VV\5&381f35e2&0&00014f\Device Parameters
PSChildName : Partmgr
PSDrive : HKLM
PSProvider : Microsoft.PowerShell.Core\Registry
Attributes : 0
• If you are upgrading to HP 3PAR OS 3.1.3
After an upgrade to HP 3PAR OS 3.1.3, HP requires that host persona 15 be used for Windows
Server 2012 R2 and non-R2 and Windows Server 2008 R2 and non-R2 to prevent this issue
from occurring. The host persona must be changed to 15 before the first reboot of the Windows
Server host following the upgrade. Changing to host persona 15 is an online procedure. Use
the HP 3PAR OS CLI sethost command to change the persona, and verify by using the
showhost command following the upgrade.
# sethost -persona 15 windowshost
showhost
Id Name Persona -WWN/iSCSI_Name- Port
0 windowshost WindowsServer 10000000C9606724 0:5:1
10000000C9606724 1:5:1
Microsoft MPIO Driver on Windows Server 2008
With Windows Server 2008, using the Microsoft native MPIO driver, the load-balancing policy
defaults to Active/Passive. HP requires that the load-balancing policy be set to Round Robin.
Microsoft MPIO Driver on Windows Server 2008 25