Certon Systems' my RAID is a compact & affordable direct attached unit offering the convenience of an external hard drive together with RAID level 5 data security. RAID level 5 means that in the very unlikely event that one of my RAID's high quality hard drives fails data integrity & security is maintained & it is then simply a matter of hot-swapping the faulty drive & continuing to use my RAID as previously. Calumet are the exclusive UK distributor for the Certon Systems range of premium quality storage systems in the photo imaging sector. At the heart of the Certon Systems range are the family of network attached & direct attached RAID storage systems. RAID (Redundant Array of Independent Disks) enables data to be spread across a number of hard drives so as to ensure that the data is secure even in the event that one, or even two of the hard drives were to fail. Please note my RAID are not pre-installed with an interface giving you the option best suited to your own connectivity. The following options are available, please click through on the accessories tab for more information. · USB2.0/ Fire Wire 800 · USB3.0 · E-SATA