Do you mean that you've lost three disks, sequentially, in a short period of time? If so, either you're buying crappy disks and have bad luck, or something about your system is murderous to disks.Conventional "desktop" disks are designed for low-intensity usage during an 8-hour, 5-day week. Using them for anything else is just asking for trouble (ie, running a server like torrent/web/mail). Besides this kind of abuse, there are other more environmental factors that can accelerate disk failure: bad power, probably temperature extremes or swings, vibration, even too short a spindown timer.
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