因為最近把16GB的SSD做成了HDD的cache，所以比較關系壽命問題。

使用smartctl工具。

參考：https://www.v2ex.com/t/261373

linux 下面只有 smartmontools 這一個工具，而且只對像三喪和 intel 這樣的大廠支持良好，其余的廠家文檔不全或故意不公開接口，第三方工具就沒辦法了。

其中最后一個最重要和直觀 “ Percentage Used Endurance Indicator ” ，單位是百分比，新的是 0%

我現在的壽命是1%， 持續觀察一陣。

/home/tong/bin [tong@T7] [16:53] > sudo smartctl -l devstat /dev/sdb smartctl 6.5 2016-05-07 r4318 [x86_64-linux-4.8.11-1-ARCH] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.orgDevice Statistics (GP Log 0x04) Page Offset Size Value Flags Description 0x05 ===== = = === == Temperature Statistics (rev 1) == 0x05 0x008 1 44 --- Current Temperature 0x05 0x010 1 - --- Average Short Term Temperature 0x05 0x018 1 - --- Average Long Term Temperature 0x05 0x020 1 54 --- Highest Temperature 0x05 0x028 1 25 --- Lowest Temperature 0x05 0x030 1 46 --- Highest Average Short Term Temperature 0x05 0x038 1 46 --- Lowest Average Short Term Temperature 0x05 0x040 1 - --- Highest Average Long Term Temperature 0x05 0x048 1 - --- Lowest Average Long Term Temperature 0x05 0x050 4 0 --- Time in Over-Temperature 0x05 0x058 1 95 --- Specified Maximum Operating Temperature 0x05 0x060 4 0 --- Time in Under-Temperature 0x05 0x068 1 0 --- Specified Minimum Operating Temperature 0x07 ===== = = === == Solid State Device Statistics (rev 1) == 0x07 0x008 1 1 N-- Percentage Used Endurance Indicator|||_ C monitored condition met||__ D supports DSN|___ N normalized value/home/tong/bin [tong@T7] [16:54] >

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百合同樣做cache，在一年之后便壞掉了的SSD，目前值為161 。。。

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轉載于:https://www.cnblogs.com/hugetong/p/6138282.html

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