HP 3PAR Windows 2012 and Windows Server 2008 Implementation Guide

NOTE: For the Hardware iSCSI with Emulex CNAs, the UCNA driver has an extended timeout
value that is set to 90 seconds. This parameter determines the amount of time the UCNA driver
waits for the target to become available after it has lost connection to the target during an I/O
operation.
If the iSCSI initiator loses a path to the target, this default value will delay any MPIO operations
until this timeout has been reached, causing a significant delay in I/O operations.
The following registry entry can be modified to reduce the delay in I/O operations. For example,
reducing this value to 30 seconds can result in the delay in I/O operations being reduced to less
than 40 seconds.
To update the timeout value, follow these steps:
1. In a command shell or PowerShell window, run the regedit command
2. In the registry editor window, navigate to the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\be2iscsi\
Parameters\Device
3. Change the DriversParamaters string value, modifying it to eto=30 or adding eto=30as
required.
4. Reboot the host for the setting to take effect.
The CNA can be configured using either dependent iSCSI (the IP address of the system is obtained
from the host NIC connections) or Independent iSCSI (the IP address is entered into the CNA card).
The CN1100E can be configured to boot from SAN; SCSI targets are entered into the card. For
general information about the CN1100E, consult the HP website.
Requirements for the software iSCSI listed above regarding port setup, network connectivity, and
VLAN configuration also apply for hardware iSCSI.
To set a static IP address, follow these steps:
1. After installing the CN1100E, boot the system. The following text appears in the BIOS:
Emulex 10Gb iSCSI Initiator BIOS..
Press <Ctrl> <S> for iSCSISelect(TM) Utility
2. Press Ctrl+S to enter the utility.
Figure 18 iSCSI Utility
50 Setting Up a Windows Server 2012 or 2008/HP 3PAR StoreServ Storage Configuration with iSCSI Storage