Buffalo Tera Station Pro is a larger capacity NAS device with robust RAID 6 capability. The redundancy of four separate hard drives in RAID 5 or RAID 1 modes mean that even if a hard drive fails, your data is safe. With Hot Swap functionality, if a drive does fail, the Tera Station Pro automatically powers down the faulty drive, enabling you to safely remove & replace without losing any data, or down time. The replication function allows the connection of a second Tera Station via LAN port & replicates the data to improve reliability, fault tolerance or accessibility. Available as desktop or 1U rackmount the Tera Station Pro is the perfect solution for the home office or small to medium business that needs large, easy-to-deploy, easy-to-manage, redundant network attached storage.