Now I'm using apc bx650ci-cn back ups for my freenas server and router, It works well. the purpose of using ups is when ac power loses, I can get serval minutes to shutdown. Last week, I noticed the ups switch to battery for a very short time then back, yesterday I got a hdd smart test failure message, one of my disk got a read failure error. maybe the ups didn't provide enough protection, Should I upgrade to better ups such as apc smart ups?
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