WDC WD40PURZ-85AKKY0缺少smartclt属性吗？

Question

我想和大家分享一件奇怪的事情我有两个这样的

WDC WD40PURZ-85AKKY0
WDC WD40PURZ-85TTDY0

两者都是紫色的4tb驱动器。在数组中使用它们之前(和其他4tb驱动器一起)，我想检查驱动器，并从最简单的驱动器开始，使用smartctl -i /devsd(无论识别什么字母)检查驱动器的属性。

WDC WD40PURZ-85AKKY0 specs

Model Family: Western Digital Purple
Device Model: WDC WD40PURZ-85AKKY0
Firmware Version: 80.00A80
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Fri Jan 15 01:37:42 2021 EET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

capabilities: (0x11) SMART execute Offline immediate.
No Auto Offline data collection support
Suspend Offline collection upon new command.
No Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No 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.

注意，“4 No”指的是

No Auto Offline data collection support.
No Offline surface scan supported.
No Conveyance Self-test supported.
No Selective Self-test supported

当另一个驱动器WDC WD40PURZ-85TTDY0完全相同时，相同的固件拥有支持它们，如下所示。

Model Family: Western Digital Purple
Device Model: WDC WD40PURZ-85TTDY0
Firmware Version: 80.00A80
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new command.
Offline surface scan supported.
Self-test supported.
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.

这怎么可能呢？这些属性是

自动脱机数据收集支持。

支持离线表面扫描。

运输自我测试支持。

选择性自测试支持

启用-从底层操作系统或使用智能with命令禁用？

在此之后，我还检查了2个skyhawk设备，也检查了4tb，并询问了我一些紫色的朋友，他们都支持这4个属性。

你知道这里发生了什么吗？

PS我有一个无用的想法，张贴在官方的wd论坛，但该论坛似乎死了很久以前。

Answer 1

WD紫色是监视专用驱动器，所以我不希望它们输出详细的智能统计数据。您有两个不同的驱动程序模型/修订版(85AKKY0对85TTDY0)，因此前者可能导出较少的智能属性/功能。