ExaGrid provides Tiered Backup Storage with a unique disk-cache Landing Zone, long-term retention repository, and scale-out architecture. ExaGrid’s Landing Zone provides for the fastest backups, restores, and instant VM recoveries. The retention repository offers the lowest cost for long-term retention. ExaGrid’s scale-out architecture includes full appliances and ensures a fixed-length backup window as data grows, eliminating expensive forklift upgrades and product obsolescence. ExaGrid offers the only two-tiered backup storage approach with a non-network facing tier, delayed deletes, and immutable objects to recover from ransomware attacks.