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Enterprises needing to move vast amounts of critical information over IP networks can trust Silver Peak to ensure that they make the most effective usage of their Wide Area Network (WAN) bandwidth while meeting well-defined replication windows. Silver Peak is commonly used to improve the performance and reliability of a wide variety of data replication applications, including:
- IP-based SAN technologies and iSCSI solutions, including SAN arrays from EqualLogic
- EMC’s SRDF/A, Hitachi’s TrueCopy, Network Appliance’s Snapvault/SnapMirror, Veritas’ Volume Replicator, Double Take software, and other commonly used replication applications.
- Standard file copy and file services, such as Xcopy, FTP, TFTP and rsynch
- Replication of both pre-compressed and non compressed system images, including VMware™
WAN Challenges
Data replication can be particularly difficult to achieve across a Wide Area Network (WAN). This is primarily due to the following characteristics, which are common to most replication environments:
- Large volumes of data.
Data replication often involves the transfer of significant amounts of data across the WAN. Even when data de-duplication is used, WAN bandwidth can be a barrier to successful replication and recovery. Silver Peak is a perfect compliment to storage solutions using data de-duplication, delivering an additional 10-30x performance improvement on average.
- Time sensitive.
Most data replication applications leverage the TCP protocol for transport, which can introduce latency during data transfers. This can prevent replication asks from being completed in allocated windows, resulting in database synchronization issues
- Many simultaneous sessions
Large enterprises often perform dozens of simultaneous replication sessions, which can tax networking infrastructure if there is not enough capacity.
Improve Data Replication
Silver Peak increases the performance and reliability of disaster recovery by delivering the following functionality:
- Improve data transfer times.
Silver Peak’s Network Memory recognizes repetitive information and delivers it locally. In addition, silver Peak provides enhancements to accelerate TCP and CIFS, reducing the impact of latency on data transfers.
- Maximize WAN efficiency.
Network Memory can reduce as much as 99% of WAN traffic by eliminating the transfer of duplicate information. Network memory fingerprints at the byte level, enabling Silver Peak to detect and eliminate repetitive patterns even when the backup/replication solution is performing similar functions at the block level.
In addition, Silver Peak leverages advanced compression techniques to further reduce the amount of WAN bandwidth required for backup and replication.
- Reduce packet loss and delivery errors.
Silver Peak reduces the impact of both packet loss and jitter that occurs when router links are oversubscribed and drop or re-order packets. Adaptive Forward Error Correction (FEC) for example, can reduce effective packet loss by an order of magnitude.
- Ensure data security.
Silver Peak NX appliances use hardware-based AES encryption to protect network traffic and local content, ensuring that all data is protected from unauthorized access at all times.
- Cost effective scalability.
Silver Peak can support a full 500 Mbps WAN capacity in a single NX appliance, with several variants available that support over 45 Mbps. This enables enterprises to cost effectively support data center to data center links, as well as network-based backups across many remote locations
With Silver Peak, WAN performance is no longer an obstacle to successful data replication. This enables enterprises to achieve the following benefits:
- Transfer more information in less time, enabling enterprises to meet and exceed Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO)
- Eliminate time and effort spent troubleshooting replication problems
- Increase geographic distances between data centers for better disaster recovery.
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