Whether you need to keep data safe, or if you're just looking for an easy way to share files across a network, a Network Attached Storage (NAS) device is a good way to achieve both goals.
If the unit can store multiple hard drives it can often function in RAID 1 (also known as mirroring), copying everything from one hard drive to another. This means if one drive fails physically, there's still a backup. For those craving more capacity but with some data safety, there's RAID 5, available in NAS units with three or more disks. This allows you to lose one hard drive, and you'll still retain access to all your data — replace it, and the system will rebuild all the missing data required from your existing hard drives in order to survive another hard drive failure.
Some offer features such as BitTorrent servers, download clients and media streamers — helping you cut down on power by turning off your PC, and using the NAS instead.














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