HP StorageWorks Enterprise File Services WAN Accelerator 2.1.5 deployment guide (June 2006)
86 8 - PROXY FILE SERVICE DEPLOYMENTS
NOTE: When you configure a share, a text file (._rbt_share_lock. txt), is created on the origin
server that keeps track of which HP EFS WAN Accelerator owns the share. Do not remove this
file. If you remove the ._rbt_share_lock. txt file on the origin file server, PFS will not function
properly.
Stand-Alone Mode. Provides the client read-write access to data on a remote HP
EFS WAN Accelerator. For example, if you want to load temporary data from a
remote client to the remote HP EFS WAN Accelerator that does not need to be
backed up at a data center, you can create a share in Stand-Alone without a
remote path. A Stand-Alone share with a remote path is initially populated with
data from the origin server after which changes and/or new data created on the
share are not sent back to the origin server.
Global Mode. HP EFS WAN Accelerator optimization without PFS enabled.
How Does PFS Work?
To synchronize the data volumes, the HP EFS WAN Accelerator communicates to the
HP EFS RCU running on the origin server. If the origin server is a non-Windows file
server and cannot run the HP EFS RCU, then the HP EFS RCU can be run on a
Windows server with write-access, to the origin server.
PFS provides Windows file service in the HP EFS WAN Accelerator at a remote site.
The HP EFS WAN Accelerator is configured as a Domain Member Server. Data
volumes at the data center are configured explicitly on the proxy file server and are
served locally by the HP EFS WAN Accelerator. As part of the configuration, the data
volume including the Access Control Lists (ACLs) from the origin server are copied
on to the HP EFS WAN Accelerator. PFS allocates a portion of the HP EFS WAN
Accelerator data store for users to access as a network file system.
PFS in the HP EFS WAN Accelerator allows a Domain Controller (DC) to authenticate
users accessing its file shares. The DC can be located at the remote site or over the
WAN at the main data center. The HP EFS WAN Accelerator must be configured as a
Member Server in the Windows 2000, or later, Active Directory Services (ADS)
domain. Domain users are allowed to access the PFS shares based on the access
permission settings provided for each user.