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Preview of 16 four- and five-bay Network-attached Storage devices

Are the hard drives in your computer full, but external hard drives don't provide enough space or safety? What you need is Network Attached Storage (NAS). If you go for the ones with room for four to five normal hard drives, it will give you a large amount of safe and reliable storage.

A larger number of drives should interest those needing significant storage space - film and music collectors, companies and professional photographers. For photographers who store their images in RAW format, for example, the number of gigabytes never seems to be enough.

We've reviewed 16 four- and five-bay NAS solutions, that provide up to 15 terabytes of storage using 3 TB disks.

You can never have enough space, but the security of your data is even more important. Losing a few downloaded films won't make you lose much sleep, but seeing your entire personal photo collection or administration disappear for good is much more problematic. In other words, protecting your data is essential. We could write a book on what you should and shouldn't do, but every security system is as strong as its weakest link. If your data exists on only one drive, that is your very weak link. In that case you could get a NAS with two disks, making disk two mirror disk one (using a RAID 1 configuration, as it is called).

If one disk of original data isn't enough, this review is for you. The devices we tested support RAID 5, allowing you to combine three or more disks for a safe back-up volume. You can lose an entire drive, and still have all of your data. Error correction is shared across all connected drives. Should one drive disappear, you only need to install a new hard drive to retrieve your data. You can read the rest of 16 four- and five-bay NAS devices previewed on