Drobo 2TB Bundle Includes Drobo and 2 x 1TB WD Caviar Green HDD 04DD1-10EARS-2 BeyondRAID leverages RAID's protection methodologies, including mirroring and striping with parity Drobo's drive redundancy protects your data from the failure of one drive, and self heals during a drive failure. Instantly expand your available capacity by hot swapping in an additional drive, or replacing an existing drive with a larger-capacity one Mix and match any 3.5" SATA drives of your choice - any capacity, speed or manufacturer. With its self-healing technology, Drobo keeps your data safer than ever