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I am considering getting a NAS for home use (file hosting & media hosting (1080p) to ~ 3 devices simultaneously). I would like to set up 4 drives with RAID 0+1 and am wondering whether to buy a 4 bay NAS like the QNAP TS-419 P+ or the cheaper solution of buying a 2 bay NAS like the QNAP TS-219 P+ and add on a 4 bay expansion via eSata such as this. As the 2 bay + expansion is cheaper and you get 2 extra bays.
Hi, thanks for the response. Given that the RAID engine is embedded in the extension enclosure is it possible to have a RAID 0+1 setup where 2 disks are in the host QNAP NAS and the other 2 disks are in the extension enclosure? – Aly – 2011-10-09T16:00:48.277
@Aly: I think most probably not (the extension enclosure has the hardware to manage disks, and SATA connection is uni-directional). There is no way hardware in the extension can access disks that are connected to some other SATA bus inside the extension's host (the NAS box). – haimg – 2011-10-09T16:08:01.307