White Papers

Windows Server single-path and MPIO configuration recommendations for SC Series storage
56 Dell EMC SC Series: Microsoft Multipath I/O Best Practices | CML1004
Setting name
Description
Default
value
Recommended
value
MaxPendingRequests
This setting controls the maximum number
of outstanding requests allowed by the
initiator. At most this many requests will be
sent to the target before receiving
response for any of the requests.
255
no change
EnableNOPOut
If set to 1, the initiator will send NOP OUT
PDUs to target if there is no activity for 2
minutes.
0
1
MaxTransferLength
This is maximum data size of an I/O
request.
262144
(256KB)
no change
MaxBurstLength
This is the negotiated Max Burst Length.
262144
(256KB)
no change
FirstBurstLength
This is the negotiated First Burst Length.
65536
(64KB)
no change
MaxRecvDataSegmentLength
This is the negotiated
MaxRecvDataSegmentLength.
65536
(64KB)
no change
IPSecConfigTimeout
This timeout value is used when the driver
calls the discovery service to
configure\release IPsec for an iSCSI
connection.
60
no change
InitialR2T
If set to Non-Zero value, initiator will
request InitialR2T (InitialR2T=Yes). Else
initiator will not request InitialR2T
(InitialR2T=No).
0
no change
ImmediateData
If set to Non-Zero value, initiator will
request ImmediateData
(ImmediateData=Yes). Else initiator will
not request ImmediateData
(ImmediateData=No).
1 (Yes)
no change
PortalRetryCount
This value is used to determine how many
times a connect request to a target portal
should be retried if the portal is down.
5
no change
NetworkReadyRetryCount
This value is used to determine how many
times initiator should retry getting the IP
address of NIC corresponding to the
PortNumber specified in the login request.
10
no change
ErrorRecoveryLevel
Error recovery level that the initiator will
request.
2
no change