Setting Up Virtual Machines (Vms) And Guest Operating Systems; Setting The Scsi Disk Timeout Value For Windows Vms; Sharing Luns; Selecting The Scsi Emulation Driver - HP XP20000/XP24000 Configuration Manual

Setting up virtual machines (VMs) and guest operating systems

Setting the SCSI disk timeout value for Windows VMs

To ensure Windows VM's (Windows 2000 and Windows Server 2003) wait at least 60 seconds for
delayed disk operations to complete before generating errors, you must set the SCSI disk timeout
value to 60 seconds by editing the registry of the guest operating system as follows:
CAUTION:
Before making any changes to the registry file, make a back up copy of the existing file.
1. Start the registry editor: select Start > Run, enter regedit.exe, and click OK.
2. In the directory tree in the left panel, select HKEY_LOCAL_MACHINE > System > CurrentControlSet
> Services > Disk.
3. In the right pane locate the DWORD entry "TimeOutValue." and right click. Select Modify, then
set the data value to x03c (hexadecimal) or 60 (decimal).
NOTE:
If the DWORD TimeOutValue" doesn't exist, click Edit > New> DWORD value and enter
the name TimeOutValue."

Sharing LUNs

To share LUNs between VMs within a single ESX server, set the SCSI controller to virtual mode. To
share LUNs across multiple ESX servers or in a virtual to physical configuration, set the SCSI controller
to physical mode.

Selecting the SCSI emulation driver

Select the HP supported SCSI emulation driver for a guest OS as follows:
1. Windows
For Windows 2000 use the BusLogic SCSI driver.
For Widows 2003 use the LSI Logic SCSI driver.
2. Linux
For the 2.4 kernel use the LSI Logic SCSI driver.
For the 2.6 kernel use the BusLogic SCSI driver.
XP Disk Array Configuration Guide: VMware 15