Virtual Machine Protection for Red Hat Enterprise Virtualization
The Virtual Server Agent provides a unified protection and recovery vehicle for virtual machines (VMs) and guest files in a Red Hat Enterprise Virtualization (RHEV) data center. Additional options for automatic data discovery, deduplication, and reporting help ensure all virtual machine data is easily traceable and retrievable whenever the need arises.
The Virtual Server Agent offers the following key features:
- Complete virtual machine protection
The Virtual Server Agent backs up a complete image of each virtual machine. This is accomplished by creating a snapshot of the virtual machine's disk, which includes the complete state of the virtual machine at the time of backup. Subsequently, the virtual machine disk can be easily restored and mounted onto the host computer. The virtual machine is then ready for use.
- Guest file recovery
Restore files from a guest VM to a VSA proxy or another client machine. For UNIX file system support, you can convert a Linux MediaAgent to a File Recovery Enabler for Linux.
- Load distribution on each host
A proxy computer handles all the mounting and transfer of data from the host computer to the backup media. For Red Hat, this proxy computer is always a virtual machine residing on the Red Hat cluster and is reserved specifically for data protection operations. As needed, multiple proxies can be deployed on a host to provide load distribution for backup operations.
- Automatic protection of virtual machines
In any virtual environment, virtual machines are added or moved on a frequent basis. This rate of change can make it difficult to track whether newly created or moved virtual machines have been protected. The Virtual Server Agent solves this problem by providing several options for automatically discovering virtual machines. The discovery process can add all new or moved virtual machines or a select group of virtual machines satisfying specified criteria.
- Block level deduplication
Deduplication provides a smarter way of storing data by identifying and eliminating the duplicate items in a data protection operation.
Deduplication at the data block level compares blocks of data against each other. If virtual machines contains blocks of data that are identical to each other, block level deduplication eliminates storing the redundant data and reduces the size of the data in storage. This dramatically reduces the virtual machine backup data copies on both the disk and tapes.