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How can we improve high latency links using MaxOutstandingR2T iSCSI parameter?

If you are experiencing high latency or decreased transfer rates between iSCSI initiators and targets, try to tune with the MaxOutstandingR2T iSCSI parameter.

A detailed explanations about how this parameter works can be found under the following link:

http://scst.sourceforge.net/max_outstanding_r2t.txt

In order to change the MaxOutstandingR2T iSCSI parameter, go to DSS console and press ctrl + alt + W, then go to tuning options -> iSCSI daemon options -> Target options -> (enter the target to modify) and you will see MaxOutstandingR2T on the list.

Please remember that this parameter needs to be set separately for every target.

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