HP StorageWorks Enterprise File Services WAN Accelerator 2.1.5 deployment guide (June 2006)

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR 2.1.5 DEPLOYMENT GUIDE 87
8 - PROXY FILE SERVICE
D
EPLOYMENTS
The proxy file server can export data volumes in local mode, broadcast mode, and
stand-alone mode. After the HP EFS WAN Accelerator receives the initial copy of the
data and ACLs, the shares can then be made available to local clients. The shares on
the HP EFS WAN Accelerator will periodically be synchronized with the origin server
at specified intervals, or manually by the system administrator. The HP EFS WAN
Accelerator uses Scalable Data Referencing (SDR) during the synchronization process
which optimizes the traffic across the WAN.
Figure 8-1. PFS Deployment
When to Use
PFS
PFS can be configured with any number of file shares in different modes. Shares are
configured into different operating modes based on the use of your data:
 For environments seeking to broadcast a set of read-only files to many users at
different sites. Broadcast Mode quickly transmits a read-only copy of the files
from the origin server to your remote offices.
 For environments that need to efficiently and transparently copy data created at a
remote site to a central data center, perhaps where tape archival resources are
available to backup the data. Local Mode enables read-write access at remote
offices to update files on the origin file server.
 For network environments where it is more effective to maintain a separate copy
of files that are accessed locally by the clients at the remote site. In Stand-Alone
Mode, create a proxy file server at a remote office using the remote office HP
EFS WAN Accelerator, creating extra storage space.
If any of the above advantages can benefit your environment, then enabling PFS in the
HP EFS WAN Accelerator is appropriate.