HP StorageWorks Enterprise File Services WAN Accelerator 2.1.5 Command-Line Interface reference manual (June 2006)

120 4 - CONFIGURATION-MODE COMMANDS
pfs enable
Enables PFS support. PFS provides fast access to local files, accelerated access to files
requiring SMB signing and continuous access to files in the event of WAN disruption.
PFS allows you to store local copies of files at the remote site in an integrated virtual
file server resident on the HP EFS WAN Accelerator. PFS supports only Windows
2000 and above domains.
PFS is not appropriate for all network environments. For example, in a collaborative
work environment when there are many users reading, writing, and updating a
common set of files and records you should consider not enabling PFS.
You must carefully evaluate whether PFS is suitable for your network needs. For
detailed information about PFS and when to enable it, see the HP StorageWorks
Enterprise File Services WAN Accelerator Deployment Guide.
Before you enable PFS make sure you:
 configure the HP EFS WAN Accelerator to use Network Time Protocol (NTP) to
synchronize the time. For detailed information about setting the date and time in
the HP EFS WAN Accelerator, see the HP EFS WAN Accelerator Management
Console User Guide.
 configure the DNS server correctly. The configured DNS server must be the same
DNS server to which all the Windows client machines point to.
 have a fully qualified domain name for which PFS will be configured. This
domain name must be domain name for which all the Windows desk-top
machines are configured.
 configure the HP EFS WAN Accelerator as a member server in the Windows
2000 domain so that the HP EFS WAN Accelerator appliance can access the
domain controller to authenticate the users accessing its file shares. In order to
perform this operation, a Windows domain account is required with the privileges
to perform a joindomain operation.
NOTE: Using PFS can reduce the overall connection capacity for optimized TCP connections,
as memory and CPU resources are diverted to support the PFS operation.
NOTE: If more than 100 MB of data is transferred through an HP EFS WAN Accelerator,
Model 1020 while performing PFS synchronization, the Central Processing Unit (CPU)
utilization might become high and result in a CPU alarm. This CPU alarm should not be cause
for concern.
PFS requires the HP EFS Remote Copy Utility (HP EFS RCU). You install the HP EFS
RCU on the origin server or on a separate Windows host with file share access to the
data utilized by PFS. You can download the HP EFS RCU from the HP support site
located at http://www.hp.com. For detailed information, see the HP StorageWorks
Enterprise File Services WAN Accelerator Deployment Guide and the HP
StorageWorks Enterprise File Services Remote Copy Utility Reference Manual.