我购买了“新”驱动器（从不使用备份仓库中的驱动器），但在执行一些 smartctl 测试后我发现了一些奇怪的事情。
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 0 -
# 2 Vendor (0xb0) Completed without error 00% 21214 -
# 3 Vendor (0x71) Completed without error 00% 21214 -
经过短暂的自检后出现了数字 3。这个不同数量的 LifeTime(hours) 有何含义？
完整日志如下：
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 24) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 1) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
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 100 100 054 Pre-fail Offline - 0
3 Spin_Up_Time 0x0007 100 100 024 Pre-fail Always - 0
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 2
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 100 100 020 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 3
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 2
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 2
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 2
194 Temperature_Celsius 0x0002 146 146 000 Old_age Always - 41 (Min/Max 21/44)
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
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 0 -
# 2 Vendor (0xb0) Completed without error 00% 17458 -
# 3 Vendor (0x71) Completed without error 00% 17458 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
答案1
听起来像是旧驱动器的 SMART 值重置为零。
一些 Windows 程序不显示自检日志，甚至在 Linux 中，有些人也只查看 -H 或 -A（如果有的话），因此他们会错过它。
不管怎样，这些驱动器都不是什么新鲜事。它们甚至可能有缺陷，或者重新分配了扇区，即使它重置为零。
不要相信此类驱动器包含重要数据。