HP StorageWorks Enterprise File Services Remote Copy Utility 2.1 Reference Guide (November 2005)

10 1 - THE HP EFS REMOTE COPY UTILITY
The HP EFS RCU transparently prepopulates the remote HP EFS WAN Accelerator
data stores allowing you to access data transmitted from central locations to remote
sites. The HP EFS RCU can significantly accelerate the performance of more
comprehensive backup products by allowing the shrinkage of backup windows and
enhanced backup architectures.
Figure 1-1. HP EFS RCU Deployment
Features
The HP EFS RCU performs the following actions:
 Data Transfer. The HP EFS RCU efficiently transfers data from a client to a
specified target directory on a server across the WAN. The HP EFS RCU
eliminates extra round-trips caused by Common Internet File System (CIFS),
reducing that amount of time it takes to transfer data across the WAN.
 Mirroring. The HP EFS RCU synchronizes a directory on the server with one on
the client. Mirroring applies to files changed, added, and deleted on the client.
 Transparent Prepopulation. With transparent prepopulation the HP EFS RCU
warms the data store of deployed HP EFS WAN Accelerators with data from the
client. When a data store is warm, the HP EFS WAN Accelerator has already seen
the data. When data is sent again over the WAN only new or modified data is
sent, dramatically increasing the rate of data transfer over the WAN.
Figure 1-2. Transparent Prepopulation