D-Link DSN-5410-10 - xStack Storage Area Network Array Hard Drive Software Manual page 118

2. To change the MTU size, select a value from the MTU Size drop-down list.
3. To enable or disable a network data port, select the desired state from the Admin
Status drop-down list.
4. Click the Apply button.
5. If you changed the MTU setting, restart the xStack Storage to have the new setting take
effect.
108 Chapter 3 Managing Volumes
Figure 7-4. Port Tab
The standard MTU size (and default value) is 1500. However, you can select
a larger value if your iSCSI network can handle a larger frame size to see
whether it improves performance. Selecting a higher MTU value (known in
the industry as "jumbo frames") requires all network equipment involved,
such as switches, to be capable of and configured to handle an MTU of at
least 4088 or 9000, depending on your selection. For more information,
please see the D-Link hardware manual.
Note that the selection of 9000 is only available with xStack Storage systems
that have four or fewer data ports.