@luoji12103 不是这样的，你拿那个健康度除下嘛，32.5/0.05=650TB
也就是说，苹果认为它的硬盘写入量 650TB 就到了理论上的百分之百寿命 used 了。
Available Spare: 100%
Available Spare Threshold: 99%
Percentage Used: 5%
Data Units Read: 438,291,537 [224 TB]
Data Units Written: 63,640,866 [32.5 TB]
Host Read Commands: 10,684,594,802
Host Write Commands: 1,444,028,960
Controller Busy Time: 0
Power Cycles: 371
Power On Hours: 4,464
Unsafe Shutdowns: 237
Media and Data Integrity Errors: 0
Error Information Log Entries: 0
