Veritas NetBackup™ Appliance Administrator's Guide

This feature includes the following benefits:

• Improves NetBackup Auto Image Replication (AIR) performance.

  NetBackup AIR is a disaster recovery solution. Its purpose is to create off-site copies of mission critical backups to protect against site loss.

  For example, the backups that are generated in one NetBackup domain can be replicated to storage in other NetBackup domains. These other NetBackup domains may be located in diverse geographical locations. Because WAN optimization can improve wide area network data throughput to and from your appliance, more efficient backup data transfers and disaster recovery transfers occur.

• Benefits those appliances for which the traffic is sent across on slower networks. Such as networks with a latency greater than 20 milliseconds and packet loss rates greater than 0.01% (1 in 10,0000).

• Operates on individual TCP connections. Evaluates each outbound network connection to determine whether the performance can be improved.

• Improves the network performance with minimal dependency on the outbound network traffic.

• Improves the network performance of optimized duplications.

• Improves the network performance of restores to remote clients.

• Imposes no network overhead. WAN optimization is non-intrusive, as it does not impose any network overhead in situations where the overall network data transfers are high. In some scenarios, when the overall network data transfer is high, the connection speed may not be optimized despite this feature being enabled.