I looked around for a safe variant to secure my photo files and use the RAID system for several months in the mirror operation for data backup. The functionality is flawlessly under Linux, and my files thus triply - Photographer happy :-) The previous reviews I would add: Yes, the hard drives are not exactly silent, and the ventilation system vigorously, the LED is a true Christmas tree lighting :-) In continuous operation, I would not want to have to run, but since I only briefly turn on for backup, that is irrelevant. The locks the hard drive covers are a bit sloppy, but because the device remains untouched and un-moved generally, also not a real issue. Strong buy recommendation!
