By default, the SoftNAS® VM (on VMware vSphere) ships with the default E1000 virtual NIC adapter and VMware defaults to MTU 1500.
For best performance results above 1 Gigabit, follow the steps outlined below:
Use MTU 9000 instead of MTU 1500 for vSwitch, vmKernel and physical switch configurations. Be sure to configure the network interface in SoftNAS for MTU 9000 also.
For more information on MTU 9000, click here.
A dedicated VLAN for storage traffic is recommended. For VMware, refer to the Performance Tuning for VMware vSphere section for details.
To increase performance throughput and resiliency, use of iSCSI multipathing is recommended by VMware and other vendors.
Since SoftNAS operates in a hypervisor environment, it is possible to configure multi-path operation as follows: