WD 8TB HDDガチャで大勝利

WDの外付けハードディスクElements Desktopシリーズの8TBモデル（型番：WDBBKG0080HBK-JESN）の中身に、エンプラ向けのWD Goldの廉価版が入ってる事があるらしい聞いて購入したみたところ、見事に大当たりのHe10なWD80EMAZ-00WJTA0だった。やったね！

ハズレの方は非ヘリウムでWD80EMAZ-00M9AA0とのこと。まぁ、ハズレと言ってもこちらもUltrastarの流れを組む製品で、ただの8TB HDDとして見ても安い部類なので十分当たりと言えるんだけども。

非ヘリウムのWD80EMAZ-00M9AA0の方が静かで低発熱という話もあり、一概に当たりハズレとは言えないかも。自分的にはHUH728080ALE604で既にヘリウム体験済みなので、WD80EMAZ-00WJTA0にそれほど強いこだわりはなかったりする。

電源として3.3Vが来てるとHDDが起動しないらしく、うちのSuperChassis 743TQ-1200B-SQのHDDベイで使えるか心配だったけど、余裕のよっちゃんで使えた。すなわち、SUPERMICROのバックプレーンCSE-SAS-743TQでは使えると考えて良さそう。

smartmontoolsでのS.M.A.R.T.は↓な感じ。なお、室温26℃、ディスクにフルアクセスしてる最中に取得したものである。

smartctl 7.0 2018-12-30 r4883 [FreeBSD 12.0-RELEASE-p4 amd64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     WDC HGST Ultrastar He10
Device Model:     WDC WD80EMAZ-00WJTA0
Serial Number:    7HKJKU1N
LU WWN Device Id: 5 000cca 257f1cf4c
Firmware Version: 83.H0A83
User Capacity:    8,001,563,222,016 bytes [8.00 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-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon Jul 22 00:29:58 2019 JST
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:  (0x80) Offline data collection activity
                                        was never started.
                                        Auto Offline Data Collection: Enabled.
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:                (   93) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1215) 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  0x0004   129   129   054    Old_age   Offline      -       112
  3 Spin_Up_Time            0x0007   151   151   024    Pre-fail  Always       -       435 (Average 436)
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       165
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000a   100   100   067    Old_age   Always       -       0
  8 Seek_Time_Performance   0x0004   128   128   020    Old_age   Offline      -       18
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       141
 10 Spin_Retry_Count        0x0012   100   100   060    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       165
 22 Helium_Level            0x0023   100   100   025    Pre-fail  Always       -       100
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       165
193 Load_Cycle_Count        0x0012   100   100   000    Old_age   Always       -       165
194 Temperature_Celsius     0x0002   154   154   000    Old_age   Always       -       43 (Min/Max 25/53)
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
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.

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