Appendix B
This appendix describes configuration procedures that might improve your storage system's performance.
Attach multiple interfaces on your storage system to the same physical network to balance network traffic among different interfaces. For example, if two Ethernet interfaces on a storage system named toaster are attached to the same network where four NFS clients reside, specify in the /etc/fstab file on client1 and client2 that these clients mount from toaster-0:/home. Specify in the /etc/fstab file on client3 and client4 that these clients mount from toaster-1:/home. This scheme can balance the traffic among interfaces if all clients generate about the same amount of traffic.
Your storage system always responds to an NFS request by sending its reply on the interface on which the request was received.
On 10Base-T or 100Base-T Ethernet networks, the speed and duplex settings for the interfaces at both ends of a link must match exactly. Use the ifconfig interface command to check the duplex setting of your storage system's interface. If the setting is to autonegotiate, the ifconfig command displays a setting that begins with auto (for example, auto-100tx-fd-up). Otherwise, the ifconfig command displays the setting (for example, 100tx-fd-up).
Note
If one end of the link is set to autonegotiate, the other end must also be set to autonegotiate; otherwise, a mismatch might occur. You can determine the negotiated setting with the ifstat command.
You can increase storage system performance by upgrading to a faster network interface. The following lists network interfaces from the fastest to the slowest:
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Part No. 210-01082_B0
File: appb.htm
Last updated: 08-Dec-2005 13:27:25