When you have to back up or store a huge amount of data and one single hard drive is not enough,it’s time you should consider a external raid enclosure

external raid enclosure support two or more separate hard drives,that can make enough space for you to store a large accounts of data.for example,the Dual-Bay RAID Enclosure,there are some more options for setup:

RAID 0: If you config the enclosures to “RAID 0 supported”,then the two installed Hard Disk Drives will change to one large “virtual” disk.such as after  you install 2 single 1TB SATA Hard Disks and at last you will got a new “virtual” Diskthat have 2TB space.

RAID 1: Alternatively if you config that the two installed Hard Disk Drives to utilize “RAID 1″ (Mirroring Mode) then any data  saved to the hard Drives in the enclosures will be automatically mirrored to the second hard drive. in fact one of the hard disks in the enclosures becomes the primary back up and the another becomes the secondary back up. any Data that copied or “mirrored” to the secondary back up is totally copied automatically.

if the data you using is very important,just use the RAID 1 mode,it’s more safety for back up your important data.

external raid enclosure shows how far this kinds of products have come over the years and reflected how much data that we are now stored or even should to be stored regularly.

there are lots of external raid enclosure have already on the market as more people have huge data such as digital photos,music,vidoes and movies to store in their desktop.such as  Maxtor, Freecom and Lacie and more. but these “solution” also include both the Hard Disk and the enclosure.if you already have hard disks from your old computers then its more cheaper to buy a Hard Disk Enclosure and use the Hard Disks you have for the enclosure.