Dell Acceleration Appliances for Databases - Manual (Page 49)

CONFIGURING ISCSI INITIATORS FOR WINDOWS
The instructions in this section apply to multipathing for Windows Server 2008 R2.
Each initiator iSCSI port should be in a separate subnet that is the same as that of the target
iSCSI port.
Standalone Mode
1. Make sure the following Windows hot fix module and settings are applied:
http://support.microsoft.com/kb/2752538/en-us
2. Use
regedit
to disable the delayed ACK in the registry:
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\<I
nterface GUID>\TcpAckFrequency = 1
To create this registry setting:
a) Right-click in the interface you are using for iSCSI.
b) Select a new DWORD 32-bit value.
c) Name the new value
TcpAckFrequency
.
d) Set the value to 1.
3. Increase the reconnect retries value in the registry as follows:
HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-
08002BE10318}\<Instance Number>\Parameters\PortalRetryCount =
ffffffff
4. After setting these registry values, restart the system.
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