HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 39)

HP S TORAGE W ORKS EFS WAN A CCELERATOR M ANAGEMENT C ONSOLE U SER G UIDE 39
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2. Use the controls to set NFS options, as described in the following table.
Modifying NFS
Server Settings You can modify your NFS server configuration settings in the Setup: Optimization
Service - Protocol: NFS Server <server name> page.
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.