HP Enterprise File Services WAN Accelerator manual Designing an HP EFS WAN Accelerator Deployment

CHAPTER 1 Designing an HP EFS WAN Accelerator Deployment

In This Chapter	This chapter describes how the HP EFS WAN Accelerator works and how to design an
	HP EFS WAN Accelerator deployment. This chapter includes the following sections:
	‹ “Introduction to the HP EFS WAN Accelerator” next
	‹ “Design and Deployment Overview” on page 11
	‹ “Definition of Terms” on page 13
	‹ “Bypass Mode” on page 13
	‹ “Failover Mode” on page 14

Introduction to the HP EFS WAN Accelerator

The causes for slow throughput in Wide Area Networks (WANs) are well known: high delay (round-trip time or latency), limited bandwidth, and chatty application protocols. Virtually all large enterprises spend a significant portion of their information technology budgets on storage and networks, much of it spent to compensate for slow throughput by deploying redundant servers and storage, and the required backup equipment. HP EFS WAN Accelerators enable you to consolidate and centralize key IT resources to save money, reduce capital expenditures, simplify key business processes, and improve productivity.

The HP EFS WAN Accelerator not only addresses the bandwidth problem and application protocol chattiness but the latency problem as well. The HP EFS WAN Accelerator uses Transaction Acceleration (TA) to optimize throughput and save bandwidth on WANs.

HP EFS WAN Accelerators intercept client-server connections without interfering with normal client-server interactions, file semantics, or protocols. All client requests are passed through to the server normally, while relevant traffic is optimized to improve performance. HP EFS WAN Accelerators can be easily introduced into an enterprise environment without requiring any significant changes to the network or architecture.

1 - DESIGNING AN HP EFS WAN ACCELERATOR

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR 2.1.5 DEPLOYMENT GUIDE 9