1-Very good material realization: embedded power supply; enslaved and silent fans; drop and insert mechanism very safe. 2-Functionally, the management by the JMicron chip has the advantage of not requiring a specific driver, but the disadvantage of not providing any possibility of diagnosis. Thus, loaded with 4 HD and 500GB RAID5 configured, the bay is "seen" as a storage space of 1.5 TB helpful (which can be interpreted as 1/4 of the total space to parity, but how to check?). In case of failure of the electronic management of the bay, how to recover the data? 3-The alternative to configure the same hardware into 4 independent HD and ensure Raid5 management software managed by the OS solves these problems, at the cost of the loss of intelligent energy management (in HD pass stand-by after a period without disk access) 4-in the case of connection to an e-Sata port, check how it manages the "Port-multiply"; in the case of my Marvell 88SX6145, max 4 HD are "seen". 5-conclusion, if we blindly trust the JMicron to detect and repair autonomously data corruption or failure of all or part of a HD is really a solution without worry, and that works "off the box "in minutes; if one does not suffer that anything is happening "in the back" of the director, set in 5 separate HD managed by the OS; it then has a bay excellent electrical and mechanical quality. Info: after 1 year of functioning at 15 March 2013, location No. 3 does not recognize his record more (tested OK out of the bay); internal app has saved the data by reconstructing the missing disk (note!) and I reinstalled the raid5 on 4 disks; but my confidence in what remains operative is plummeting.
