IT organizations are increasingly faced with the challenge of maintaining an always-on infrastructure, which requires data to be fully protected and accessible under any circumstances. IT organizations also are challenged to keep backup copies of potentially redundant data to facilitate recovery for everything from the desktop to high-end application servers. Furthermore, many organizations face pressure from regulatory bodies that require audits to make sure that information is protected to maintain industry or government compliance. To address these concerns, many customers have used products from vendors such as Data Domain, which provide a comprehensive set of data deduplication and replication technologies to help ensure efficient use of storage capacity and movement of data. The award-winning Cisco® Wide Area Application Services (WAAS) solution can be deployed as a complement to Data Domain solutions to provide additional layers of optimization to minimize bandwidth consumption and improve performance, while also helping IT organizations consolidate distributed infrastructure.
Data Domain Solution Overview
Cisco Wide Area Application Services
• Application-specific acceleration: By applying acceleration to specific application protocols, Cisco WAAS can effectively overcome the limitations of application operation in WAN environments, such as bandwidth utilization and application-layer latency. Cisco WAAS employs a variety of features for application-specific acceleration, including read ahead, message prediction, safe data caching, and operation batching, to provide LAN-like application performance over the WAN.
• Advanced compression: Cisco WAAS employs two forms of advanced compression to minimize the bandwidth consumed on the WAN. Cisco WAAS DRE allows Cisco Wide Area Application Engine (WAE) Appliances to store application-independent blocks of data found in TCP traffic and use them to reduce the need to send the same data twice within the compression history, providing up to 100:1 compression. Persistent Lempel-Ziv (LZ) compression is applied to further reduce bandwidth consumption and provides up to an additional 5:1 compression for data in transit, even for data that has been optimized by DRE. With Cisco WAAS, WAN bandwidth is preserved and consumption is minimized, thereby improving application throughput and performance.
• Transport optimizations: Cisco WAAS provides optimizations for TCP with a suite of features called Cisco WAAS Transport Flow Optimization (TFO). Cisco WAAS TFO improves TCP performance and efficiency in WAN environments. By transparently scaling TCP windows and using intelligent congestion-management algorithms, Cisco WAAS helps TCP perform more efficiently and effectively over the WAN, improving application performance.
Figure 1. Deployment of Data Domain with Cisco WAAS
Cisco WAAS Optimizes Data Domain
• Improved performance while accessing applications, data, and content over the WAN
• More efficient utilization of existing network resources
• Better storage economics through unique redundancy elimination techniques
• Consolidated infrastructure, yielding lower costs and simplified manageability
• Better posture toward data protection, including backup, recovery, replication, and compliance
Figure 2. Cisco WAAS Improves Data Domain Throughput
Figure 3. Cisco WAAS Improves Data Domain Response Time