User's Manual

422 Storage Center 5.5 System Manager User Guide
Server HBA Settings
Windows Settings
Refer to Microsoft documentation for complete details on changing registry values for the
iSCSI initiator:
http://blogs.msdn.com/b/san/archive/2008/07/27/microsoft-iscsi-software-initiator-isns-
server-timers-quick-reference.aspx for details.
Time Out
In regedit, make the following change:
H_Key_Local_Machine
->System
->CurrentControlSet
->Services
->disk -> Timeout Value=60
MaxRequestHoldTime and LinkDownTime Settings
MPIO not enabled
When using a Microsoft 2008 R2 iSCSI initiator with a 10G iSCSI card, you should set the
MaxRequestHoldTime to 120 to prevent loss of host connectivity during controller failover.
In regedit, make the following change:
H_Key_Local_Machine
->System
->CurrentControlSet
->Control
->Class
->{4D36E97B-E325-11CE-BFC1-08002BE10318}
-><Instance Number>
(which is the storage controller instance of the MS iSCSI Initiator)
->Parameters->MaxRequestHoldTime=120
MPIO enabled
When using a Microsoft 2008 R2 iSCSI initiator with MPIO enabled, LinkDownTime should
be set to 120 to prevent loss of host connectivity during controller failover.
In regedit, make the following change:
H_Key_Local_Machine