A VMware-specific term that refers to a technology that keeps track of which blocks of data inside virtual machines have been changed. Backup applications may take advantage of this functionality to perform block-level incremental backups in which only the virtual disk blocks that have changed since the previous backup are written, not the entire contents of the VMs being protected.
Variable-length deduplication typically reduces disk backup capacity by more than 90% and allows existing networks to be used for automated DR protection.
In the digital age, maximizing asset value often means using different storage tiers with different cost and access characteristics for data in different stages of its life.
Enterprise deduplication appliances with the power and performance needed for data centers, multi-site installations, and cloud environments.
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