HP StorageWorks X5500 Network Storage Gateway for Linux setup guide (AP811-96003, October 2009)

DescriptionTransport TypePort

Microsoft Directory ServiceUDP445

Enable NFS file locking if necessary

When FS Option for Linux is installed in a software-only configuration, NFS file locking is disabled

by default. See the HP StorageWorks X5500 Network Storage Gateway for Linux File Serving Software

administration guide (“Using the NLM Protocol” in the chapter “Configure FS Option for Linux” ) for

information about why file locking is disabled and how to enable it if necessary.

Determine whether the SizingActions script should be used

HP X5500 Storage Gateway for Linux includes a script called SizingActions that configures

certain operating system parameters to improve system performance, particularly in a file serving

environment. The changes improve network throughput and make better use system memory. On HP

X5500 Storage Gateway for Linux servers and HP 4400 Scalable NAS File Services systems, additional

changes are made to tune the operating system for the hardware provided with those systems.

The SizingActions script is run when HP X5500 Storage Gateway for Linux starts up. The script

does not determine whether the system parameters it adjusts have been modified from their default

values by a user on the system. This can be an issue if, for example, you are running an application

that requires system parameters such as vmem_max or mmem_max to be modified, typically in the

/etc/sysctl.conf file.

If you do adjust system parameters to support external applications such as Oracle, you should disable

the SizingActions script as described below. Because disabling the script will typically result in

a degradation to network file serving performance, HP recommends that you do this only if you must

adjust parameters for best performance for your application. HP does not recommend manually editing

the SizingActions script, as it may be replaced during an upgrade or hotfix and those changes

will not be preserved during the upgrade process.

To disable the SizingActions script, execute the following steps on each server in the cluster:

1. Go to the directory containing the SizingActions script:

# cd /etc/opt/hpcfs

2. Run the following command:

# chmod 444 SizingActions

3. Reboot the node to ensure that the SizingActions parameters are cleared from the system.

The SizingActions script will now be inactive at system start.

Set up HP X5500 Storage Gateway for Linux solutions38