What is hypervisor-based replication, and how does it compare with other software-based replication?
Hypervisor replication is a technology that automatically creates and maintains replicas of virtual hard disks or entire virtual machines (depending on the platform that is being used). This is different from traditional backups because the replication process is ongoing as opposed to traditional backups that normally run at scheduled intervals.
Generally speaking, hypervisor replicas are more of a disaster recovery solution than a backup replacement. If a host server or a storage array were to be damaged, resulting in the loss of virtual machines, then replicas could be used to replace those virtual machines. However, replicas are not good for performing item-level restoration of files, folders, applications, etc. The reason for this is that replicas usually mirror the contents of the primary host server.
If a file has been erased from the primary copy of a virtual machine, that file will be removed from the replica as well. Some replica solutions allow for the creation of snapshots (which make point-in-time restorations possible), but snapshots are not a good substitute for a traditional backup.
Dig Deeper on Backup for virtual servers
Related Q&A from Brien Posey
Hyper-converged architectures let users scale easily by adding nodes as needed, but it's important to be aware of vendor- and hypervisor-specific ...continue reading
Virtual desktop infrastructure environments are complex and have to work with many variables. A hyper-converged infrastructure can reduce costs and ...continue reading
It's possible to design hyper-converged hardware to run several hypervisors at the same time, but various factors make this a scenario we're unlikely...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.