Buffalo Tera Station™ ES is an affordable larger capacity NAS device with robust RAID 5 capability. With high speed transfer rates of up to 60MB/s, & with the redundancy of four separate hard drives in RAID 5 or RAID 1 modes, even if a hard drive fails, your data is safe. With Hot Swap & Hot Spare functionality, if a drive does fail, the Tera Station ES switches the failed drive to a spare 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 to one of the LAN ports & replicates the data to improve reliability, fault tolerance or accessibility. The perfect solution for the home office or small business, that requires larger capacity, easy-to-deploy, easy-to-manage, redundant network attached storage. High Speed: Up to 60MB/s high speed data transfer rate For the small business with no more than 5 users RAID combined with Realtime Back-up Replication Function allows for reliability with fast recovery from hard drive failures Easy setup: a clear LCD status display & an intuitive Web interface means the units are simple to install & easy to manage Resilient: Replace faulty hard drives with the Hot Swap functionality without powering down Dual Ethernet connectivity supports port trunking Dual USB (Universal Serial Bus) for greater flexibility Please note: networking components such as switches, routers, NAS & wireless devices require that speeds & standards be consistent throughout the network to gain optimum performance. To avoid compatibility clashes or for advice, please contact us on solutions@ebuyer.com.