가용성
가용성 = MTTF / ( MTTR + MTTF ) * 100
Meantime between failure 고장발생빈도시간
Meantime to repair
Meantime to failure 복구부터 다음고장까지의 시간 즉 정상 운용시간
신뢰도 = MTBF = MTTF + MTTR
remove bluebirds.exe , virtual drive
http://www.tim.id.au/blog/2009/09/03/solved-bluebirds-installer-on-lg-gh22ns50-dvd-rw/ Solved: “Bluebirds” installer on LG GH22NS50 DVD-RW This is the LG GH22NS50. We’ve started stocking these at work – just the next low-cost SATA burner option for us. Except it comes with a nasty surprise, and that surprise is Bluebirds. It’s some kind of drag-to-disc software included with the drive. Not on a CD, of course; it’s hacked into the drive’s firmware, and shows up when there’s no disc in the drive at all. Which means that every time you close the tray with nothing in it, you get prompted to install it, thanks to Windows helpfully autorunning it. It’s not really a malicious program. It just sits in your system tray until you close it or uninstall it (Control Panel -> Add/remove programs, in XP). It’s probably even helpful, for the few people who let it sit around long enough to find out. I haven’t seen anyone do that yet. Way to go, LG; not only does your drive automatically try to...
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