Dear Lucas,
To achieve the best performance of an ISCSI network, you can take the following methods:
a. If possible, deploy the backup network on a local area network.
b. On the switch side, separate VLANs for the backup network.
c. Try to avoid the backup network being routed.
d. GE network bandwidth often becomes a backup performance bottleneck. Consider using network card bonding to increase backup network bandwidth.
Hope it can help you.