推 mqazz1:你的問題 以一年365天來算 一年有365*24=8760小時 11/10 12:44
→ mickeyha:我蠢了...謝謝>_< 11/11 23:53
張凡下冊 p.341
If a disk manufacturer quotes MTTF as 1,200,000hr(140 years)
and you have 1000 disks.How many will fail per year?
我看不懂他的算式Q___Q
答案為0.73%
Annual Failure Rate(AFR) =
(1000disks * 8760 hrs/disk) / (1200000hrs/failure)
--
Why Not ：-P
http://whynot-p.blogspot.com/
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 111.248.55.69