Zerto offers a virtual-aware, software-only, tier-one, enterprise-class replication solution purpose-built for virtual environments. By moving replication up the stack from the storage layer into the hypervisor, Zerto created the first and only replication solution that delivers enterprise-class, virtual replication and BC/DR capabilities for the data center and the cloud.
Zerto architecture: Simple, effective, and virtual-ready
At the heart of this patent-pending replication technology are two key components:
Zerto Virtual Manager (ZVM) — The ZVM plugs directly into the virtual management console (such as VMWare’s VCenter), enabling visibility into the entire infrastructure. The ZVM is the nerve center of the solution, managing replication for the entire VSphere domain, keeping track of applications and information in motion in real time.
Virtual Replication Appliance (VRA) — The VRA is a software module that is automatically deployed on the physical hosts. The VRA continuously replicates data from user-selected virtual machines, compressing and sending that data to the remote site over WAN links.
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Key Differences with Hypervisor-based Replication:
Because it is installed directly inside the virtual infrastructure (as opposed to on individual machines), the VRA is able to tap into a virtual machine’s IO stream. Therefore, each time the virtual machine writes to its virtual disks, the write command is captured, cloned, and sent to the recovery site.
Unlike some replication technologies that primarily offer data protection along with cumbersome snapshots and backup paradigms, Zerto’s solution provides continuous replication with zero impact on application performance.
Hypervisor-based replication is fully agnostic to storage source and destination, natively supporting all storage platforms and the full breadth of capabilities made possible by virtualization, including high availability, clustering, and the ability to locate and replicate volumes in motion.
Hypervisor-based replication offers many important benefits: