独服(独立服务器)查看硬盘通电时间

注意：查看硬盘通电时间只对独服有效，vps是无效的

Ubuntu / Debian：

apt install smartmontools

smartctl -A /dev/sda

CentOS：

yum install smartmontools

smartctl -A /dev/sda

如果你的独服挂载了多块硬盘，其中 /dev/sda 是硬盘编号，第一块一般是 /dev/sda，如果有多块硬盘，第二块就是 /dev/sdb，最后一个字母按照abcdefg，以此类推。不过一般大家的独服都只有一到两块硬盘啦！

一般我们会看到如下的输出：

cnhb43013ds ~ # smartctl -A /dev/sda
smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.19.0-5-amd64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  Always       -       0
  2 Throughput_Performance  0x0005   142   142   054    Pre-fail  Offline      -       68
  3 Spin_Up_Time            0x0007   123   123   024    Pre-fail  Always       -       185 (Average 187)
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       40
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   115   115   020    Pre-fail  Offline      -       34
  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       16857
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       40
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       131
193 Load_Cycle_Count        0x0012   100   100   000    Old_age   Always       -       131
194 Temperature_Celsius     0x0002   181   181   000    Old_age   Always       -       33 (Min/Max 22/44)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

找到9开头那一行也就是这行↓

  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       16857

最后面的16857就是硬盘通电时间了，单位为小时，我这台16857小时还算可以。其实通电时间5w小时以下都算健康的！