Product : Zerto, IT Resilience Platform/7.5, Enterprise
Feature : WAN Optimization, Architecture, Design & Deploy
Content Owner:  Herman Rutten
Summary
Data compression
Signature matching
Bandwidth throttling
Details
Data compression: WAN Traffic Compression can be enabled per Virtual protection group (VPG) to save network bandwith in between sites. The VRA automatically adjusts the compression level according to CPU usage, including totally disabling it if needed. Zerto recommends enabling WAN compression. WAN Traffic Compression is enabled by default when replicating to VMware vCloud Director (vCD).

Signature matching: Reduces the amount of data sent across the WAN. During synchronization of the protected site and recovery site for every VM in a VPG, Zerto maintains a map of disk sectors so that if there is a need to resynchronize sites, the map signatures can be used to ensure that only data where changes occurred are passed over the WAN.

Bandwidth Throttling: Bandwidth used for remote replication traffic can be limited. A maximum bandwidth applies to remote replication traffic from the protection site to all peer recovery sites (MB/sec). Throttling can be time-based by specifying time windows using a 24 hour clock.

WAN = Wide Area Network