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10 Gigabit Network Configurations on VMware vSphere
By default, the SoftNAS Cloud® 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. : 1.
- Replace the E1000 virtual NIC adapter with a vmxnet3 on the SoftNAS Cloud® VM.
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- Use MTU 9000 instead of MTU 1500 for vSwitch, vmKernel and physical switch configurations. Be sure to
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- configure the network interface in SoftNAS for MTU 9000 also.
- Refer to the MTU 9000 section for more information.
A dedicated VLAN for storage traffic is recommended. For VMware, refer to the Performance Tuning for VMware vSphere section for details.
iSCSI Multi-pathing
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: 1.
- On the VMware host where the SoftNAS Cloud® VM runs, install and use multiple physical NIC adapters.
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- Assign a dedicated vSwitch for each incoming iSCSI target path (one per physical NIC).
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- Assign the SoftNAS Cloud® VM a dedicated virtual NIC adapter for each incoming iSCSI target path (per
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- vSwitch physical NIC).
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- Assign a unique IP address to each corresponding Linux network interface (for each virtual NIC attached to
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- the SoftNAS Cloud® VM).
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- Restart the SoftNAS iSCSI service and verify connectivity from the iSCSI initiator client(s) to each iSCSI
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- target path.
A dedicated VLAN for storage traffic is recommended.