HP Enterprise File Services WAN Accelerator manual Modifying NFS, Server Settings

	2. Use the controls to set NFS options, as described in the following table.
Control		Description
General		Enable NFS Optimization. Specify this option to enable NFS-application streamlining
		(optimization). You enable NFS-application optimization where NFS performance over
		the WAN is impacted by a high latency environment.
		Enable NFS v2 and v4 Alarms. Specify this option to enable alarm notification when
		v2 and v4 traffic is detected.
		Default Server Policy. Select one of the following options from the drop-down list to
		configure the default policy for NFS servers:
		• Global Read-Write. Specifies a policy that provides a trade-off of performance for
		data consistency. All of the data can be accessed from any client, including LAN based
		NFS clients (which do not go through the HP EFS WAN Accelerators) and clients
		using other file protocols like CIFS. This option severely restricts the optimizations
		that can be applied without introducing consistency problems. This is the default
		configuration.
		• Custom. Click Custom to display the Enable Root Squashing check box. Click
		Enable Root Squashing and Apply to enable the root squash feature for NFS volumes
		from this server. Root-squashing allows an NFS server to map any incoming user ID 0
		or guest ID 0 to another number that does not have superuser privileges, often -2 (the
		nobody user).
		• Home Directory. All accesses to each directory are by a single user. This policy allows
		aggressive caching of data and metadata.
		Default Volume Policy. Select one of the following options from the drop-down list to
		configure the default policy for NFS volumes:
		• Global Read-Write. Specifies a policy that provides a trade-off of performance for
		data consistency. All of the data can be accessed from any client, including LAN based
		NFS clients (which do not go through the HP EFS WAN Accelerators) and clients
		using other file protocols such as CIFS. This option severely restricts the optimizations
		that can be applied without introducing consistency problems. This is the default
		configuration.
		• Custom. Click Custom to display the Enable Root Squashing check box. Click
		Enable Root Squashing and Apply to enable the root squash feature for NFS volumes
		from this server. Root-squashing allows an NFS server to map any incoming user ID 0
		or guest ID 0 to another number that does not have superuser privileges, often -2 (the
		nobody user).
		• Home Directory. All accesses to each directory are by a single user. This policy allows
		aggressive caching of data and metadata.
		Apply. Click Apply to apply your settings to the running configuration. (Apply your
		settings to test a new configuration before saving them permanently.)
Add New Server Configuration		Name. Specify the name of the server to add a new configuration for an NFS server.
		Server IP. Specify the IP address of the server and click Add Server.
		Remove Selected Servers. To remove an entry, click the check box next to the name and
		click Remove Selected Servers.
Modifying NFS	You can modify your NFS server configuration settings in the Setup: Optimization
Server Settings	Service - Protocol: NFS Server <server name> page.

HP STORAGEWORKS EFS WAN ACCELERATOR MANAGEMENT CONSOLE USER GUIDE 39

2 CONFIGURING THE HP EFS WAN ACCELERATOR