My comments on this 2.5” hard-disk NAS
Initially, the use of a 2.5” hard disk in a NAS would have been simply considered as a “toy” but there are more “business-class” multi-disk NAS units like this one come on the scene that use these disks. This QNAP unit – the SS-839 Pro – impressed me because of the fact that there is a NAS fit for the business or “muscle-NAS” market that give respect to this low-power small form factor.
It also can hold 8 of the disks in the same footprint as a typical 5-bay “muscle NAS”, with support for sophisticated RAID and “business server” functionalities available in this class of device. Another benefit that I also like is the ability to have less power consumption than a NAS of this class and can provide for more expandability as one’s data needs grow.
Once the 1 Tb 2.5” hard disk comes on the scene, this will certainly wipe the 3.5” form factor off the map as far as hard disks are concerned and make that size only for certain removeable media.