硬盘在BIOS中报告不正确的大小

我有一个软件RAID系统的服务器。

arrays中有4个磁盘：
4 x 4TB型号WD40EFRX -68WT0N0

我注意到操作系统报告其中一个磁盘是3TB，所以我重新启动并检查了BIOS，它也报告了3TB。 而其他人报告4TB。

物理磁盘上的标签说4TB，就像其他3.这个磁盘已经在服务器上几个月没有问题。 我最近做的唯一更改是更新操作系统（在RAID之外的驱动器上）。

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我会更换磁盘，但想知道是否有人曾经见过这个，如果有一个修复。 是否有可能是硬盘控制器，主板/ BIOS（微星/ AMI），还是别的？ 我把驱动器放在不同的机器上，那里的BIOS也报告3TB。

为什么3TB而不是4？ 似乎太确切。

有关硬盘的更多信息：SATA，WD Red（tm），NASware（tm）3.0

ADDTIONAL：

根据@ shodanshok的请求，这里是hdparm和smartctl的输出。 看起来像一个主机保护区已启用，并使用四分之一的驱动器。

$ sudo hdparm -N /dev/sda /dev/sda: max sectors = 5860577134/7814037168, HPA is enabled 

这可能是意外设置或通过操作系统安装？

这里是smartctl的输出：

 $ sudo smartctl -a /dev/sda smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.19.0-32-generic] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: WDC WD40EFRX-68WT0N0 Serial Number: WD-WCC4E5RZJJUE LU WWN Device Id: 5 0014ee 2b7895291 Firmware Version: 82.00A82 User Capacity: 3,000,615,492,608 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Thu Apr 14 13:58:53 2016 IST SMART support is: Available - device has SMART capability. SMART support is: Enabled === 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: (53280) seconds. Offline data collection 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. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 532) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x703d) 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 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 175 175 021 Pre-fail Always - 8241 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 14 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 1992 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 14 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 9 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1830 194 Temperature_Celsius 0x0022 114 108 000 Old_age Always - 38 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t] 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.