Nexsan BEAST Series, User Manual, Page: 173 / 267

Advanced port settings
Clicking Advanced Port Settings in the lower right corner of the ports section take you to the iSCSI
Advanced Port page.
Figure 3-123: iSCSI Advanced Port page
Each port on each controller can be configured individually with the following settings:
Enable Transmit Flow Ctrl : Enables the port to recognize received Ethernet Pause frames and teporarily
pause transmission from this port when it is under high network load.
Enable Receive Flow Ctrl : Enables the port to transmit Ethernet Pause frames to pause data being sent
to this port when it is under high network load.
Enable TCP Transmit Window : Enables connections on this port to use TCP Transmission Window
scaling and adjustment in order to achieve better throughput on higher latency network links.
Enable TCP Receive Window : Enables connections on this port to advertise TCP Transmission Window
scaling and adjustment in order to allow better received throughput on higher latency network links.
►
To set flow control and TCP window settings:
1. For each port on each controller, check or uncheck the boxes for Enable Transmit Flow Ctrl , Enable
Receive Flow Ctrl , Enable TCP Transmit Window , and Enable TCP Receive Window .
2. When your desired settings are selected, do one of the following:
Click Save Configuration . The settings are saved and are applied after the system is restarted (see
Reboot System on page 194).
Click Save and Apply Changes . The settings are saved and applied immediately.
Chapter 3: The Graphical User Interface — Configure Host Access
Nexsan High-Density Storage
User Guide
www.nexsan.com
173