Question G-Sense Error Rate on New HDD

Jul 15, 2019
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I'll be honest, I'm rather lost from looking at Speccy, and I'm still not sure what I'm looking at. So I just bought a Seagate Exos (ST8000NM0055) 8tb Drive off Amazon brand new, and over the course of full formatting the drive (Currently at 86% as of writing this), it has accumulated in Speccy a "real value" of over 900 next to G-sense error rate. It's only been on for ~10 hours. Should I Return the drive or is this some sort of fluke? I also got data from CrystalDiskInfo, if that helps any. Both seem to say it's in "Good" health, I'm just not so sure...
SPECCY
Hard drives
ST8000NM0055-1RM112
Manufacturer Seagate
Heads 16
Cylinders 972,801
Tracks 248,064,255
Sectors 15,628,048,065
SATA type SATA-III 6.0Gb/s
Device type Fixed
ATA Standard ACS3
Serial Number ZA1EVTRS
Firmware Version Number SN04
LBA Size 48-bit LBA
Power On Count 1 times
Power On Time 0.4 days
Speed 7200 RPM
Features S.M.A.R.T., NCQ
Max. Transfer Mode SATA III 6.0Gb/s
Used Transfer Mode SATA III 6.0Gb/s
Interface SATA
Capacity 7452 GB
Real size 8,001,563,222,016 bytes
RAID Type None
S.M.A.R.T
Status Good
Temperature 37 °C
Temperature Range OK (less than 50 °C)
S.M.A.R.T attributes
Attribute name Real value Current Worst Threshold Raw Value Status
01 Read Error Rate 0 76 64 44 000297E800 Good
03 Spin-Up Time 0 ms 99 99 0 0000000000 Good
04 Start/Stop Count 1 100 100 20 0000000001 Good
05 Reallocated Sectors Count 0 100 100 10 0000000000 Good
07 Seek Error Rate 0 66 60 45 00003CC018 Good
09 Power-On Hours (POH) 9h 100 100 0 0000000009 Good
0A Spin Retry Count 0 100 100 97 0000000000 Good
0C Device Power Cycle Count 1 100 100 20 0000000001 Good
B8 End-to-End error / IOEDC 0 100 100 99 0000000000 Good
BB Reported Uncorrectable Errors 0 100 100 0 0000000000 Good
BC Command Timeout 0 100 100 0 0000000000 Good
BD High Fly Writes (WDC) 0 100 100 0 0000000000 Good
BE Airflow Temperature 37 °C 63 62 40 00261B0025 Good
BF G-sense error rate 974 100 100 0 00000003CE Good
C0 Power-off Retract Count 0 100 100 0 0000000000 Good
C1 Load/Unload Cycle Count 3 100 100 0 0000000003 Good
C2 Temperature 37 °C 37 40 0 0000000025 Good
C3 Hardware ECC Recovered 0 76 64 0 000297E800 Good
C5 Current Pending Sector Count 0 100 100 0 0000000000 Good
C6 Uncorrectable Sector Count 0 100 100 0 0000000000 Good
C7 UltraDMA CRC Error Count 0 200 200 0 0000000000 Good
F0 Head Flying Hours 9h 100 253 0 0000000009 Good
F1 Total LBAs Written 13,837,115,594 100 253 0 0038C1A0CA Good
F2 Total LBAs Read 687 100 253 0 00000002AF Good
Partition 0
Partition ID Disk #0, Partition #0
Size 7.27 TB

----------------------------------------------------------------------------
CrystalDiskInfo 8.2.0 (C) 2008-2019 hiyohiyo
Crystal Dew World : https://crystalmark.info/
----------------------------------------------------------------------------

OS : Windows 10 [10.0 Build 17134] (x64)
Date : 2019/07/15 0:32:42

-- Controller Map ----------------------------------------------------------
+ Standard SATA AHCI Controller [ATA]
- ST8000NM0055-1RM112
- ST2000DM001-1CH164
- Microsoft Storage Spaces Controller [SCSI]
+ Asmedia 106x SATA Controller [SCSI]
- Samsung SSD 850 EVO 120G SCSI Disk Device
- Samsung SSD 850 EVO 500G SCSI Disk Device

-- Disk List ---------------------------------------------------------------
(1) ST8000NM0055-1RM112 : 8001.5 GB [0/0/0, pd1] - st
(2) ST2000DM001-1CH164 : 2000.3 GB [1/0/0, pd1] - st
(3) Samsung SSD 850 EVO 120GB : 120.0 GB [2/1/0, pd1] - sg
(4) Samsung SSD 850 EVO 500GB : 500.1 GB [3/1/8, pd1] - sg

----------------------------------------------------------------------------
(1) ST8000NM0055-1RM112
----------------------------------------------------------------------------
Model : ST8000NM0055-1RM112
Firmware : SN04
Serial Number : ZA1EVTRS
Disk Size : 8001.5 GB (8.4/137.4/8001.5/8001.5)
Buffer Size : Unknown
Queue Depth : 32
# of Sectors : 15628053168
Rotation Rate : 7200 RPM
Interface : Serial ATA
Major Version : ACS-3
Minor Version : ACS-3 Revision 4
Transfer Mode : SATA/600 | SATA/600
Power On Hours : 9 hours
Power On Count : 1 count
Temperature : 37 C (98 F)
Health Status : Good
Features : S.M.A.R.T., 48bit LBA, NCQ
APM Level : ----
AAM Level : ----
Drive Letter :

-- S.M.A.R.T. --------------------------------------------------------------
ID Cur Wor Thr RawValues(6) Attribute Name
01 _83 _64 _44 00000B4F4000 Read Error Rate
03 _99 _99 __0 000000000000 Spin-Up Time
04 100 100 _20 000000000001 Start/Stop Count
05 100 100 _10 000000000000 Reallocated Sectors Count
07 _66 _60 _45 0000003C2539 Seek Error Rate
09 100 100 __0 000000000009 Power-On Hours
0A 100 100 _97 000000000000 Spin Retry Count
0C 100 100 _20 000000000001 Power Cycle Count
B8 100 100 _99 000000000000 End-to-End Error
BB 100 100 __0 000000000000 Reported Uncorrectable Errors
BC 100 100 __0 000000000000 Command Timeout
BD 100 100 __0 000000000000 High Fly Writes
BE _63 _62 _40 0000261B0025 Airflow Temperature
BF 100 100 __0 0000000003C4 G-Sense Error Rate
C0 100 100 __0 000000000000 Power-off Retract Count
C1 100 100 __0 000000000003 Load/Unload Cycle Count
C2 _37 _40 __0 001B00000025 Temperature
C3 _83 _64 __0 00000B4F4000 Hardware ECC recovered
C5 100 100 __0 000000000000 Current Pending Sector Count
C6 100 100 __0 000000000000 Uncorrectable Sector Count
C7 200 200 __0 000000000000 UltraDMA CRC Error Count
F0 100 253 __0 9E6200000009 Head Flying Hours
F1 100 253 __0 000332D830CA Total Host Writes
F2 100 253 __0 0000000002AF Total Host Reads

-- IDENTIFY_DEVICE ---------------------------------------------------------
0 1 2 3 4 5 6 7 8 9
000: 0C5A 3FFF C837 0010 0000 0000 003F 0000 0000 0000
010: 2020 2020 2020 2020 2020 2020 5A41 3145 5654 5253
020: 0000 0000 0000 534E 3034 2020 2020 5354 3830 3030
030: 4E4D 3030 3535 2D31 524D 3131 3220 2020 2020 2020
040: 2020 2020 2020 2020 2020 2020 2020 8010 4000 2F00
050: 4000 0200 0200 0007 3FFF 0010 003F FC10 00FB 5D10
060: FFFF 0FFF 0000 0007 0003 0078 0078 0078 0078 0008
070: 0000 0000 0000 0000 0000 001F 8D0E 0046 08CC 0040
080: 07F0 006D 306B 7561 6173 3069 B441 6173 407F 8168
090: 8168 0000 FFFE 0000 FE00 1000 0000 0000 2710 0000
100: 2AB0 A381 0003 0000 0000 0000 6003 0000 5000 C500
110: B4F9 5379 0000 0000 0000 0000 0000 0000 0000 41DE
120: 409C 0000 0000 0000 0000 0000 0000 0000 0029 2AB0
130: A381 2AB0 A381 2020 0002 0140 0108 5000 3C06 3C0A
140: 0000 003C 0000 0008 0000 0000 FDFF 0280 0000 0170
150: 0008 0000 0000 0423 0000 8000 0000 01E7 9100 8068
160: 0000 0000 0000 0000 0000 0000 0000 0000 0002 0000
170: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
180: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
190: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
200: 0000 0000 0000 0000 0000 0000 70BD 0000 0000 4000
210: 0000 0000 0000 0000 0000 0000 0000 1C20 0000 0000
220: 0000 0000 107F 0000 0000 0000 0000 0000 0000 0000
230: 2AB0 A381 0003 0000 0000 0000 0000 0000 0000 0000
240: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
250: 0000 0000 0000 0000 0000 D0A5

-- SMART_READ_DATA ---------------------------------------------------------
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
000: 0A 00 01 0F 00 53 40 00 40 4F 0B 00 00 00 03 03
010: 00 63 63 00 00 00 00 00 00 00 04 32 00 64 64 01
020: 00 00 00 00 00 00 05 33 00 64 64 00 00 00 00 00
030: 00 00 07 0F 00 42 3C 39 25 3C 00 00 00 00 09 32
040: 00 64 64 09 00 00 00 00 00 00 0A 13 00 64 64 00
050: 00 00 00 00 00 00 0C 32 00 64 64 01 00 00 00 00
060: 00 00 B8 32 00 64 64 00 00 00 00 00 00 00 BB 32
070: 00 64 64 00 00 00 00 00 00 00 BC 32 00 64 64 00
080: 00 00 00 00 00 00 BD 3A 00 64 64 00 00 00 00 00
090: 00 00 BE 22 00 3F 3E 25 00 1B 26 00 00 00 BF 32
0A0: 00 64 64 C4 03 00 00 00 00 00 C0 32 00 64 64 00
0B0: 00 00 00 00 00 00 C1 32 00 64 64 03 00 00 00 00
0C0: 00 00 C2 22 00 25 28 25 00 00 00 1B 00 00 C3 1A
0D0: 00 53 40 00 40 4F 0B 00 00 00 C5 12 00 64 64 00
0E0: 00 00 00 00 00 00 C6 10 00 64 64 00 00 00 00 00
0F0: 00 00 C7 3E 00 C8 C8 00 00 00 00 00 00 00 F0 00
100: 00 64 FD 09 00 00 00 62 9E 29 F1 00 00 64 FD CA
110: 30 D8 32 03 00 00 F2 00 00 64 FD AF 02 00 00 00
120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
160: 00 00 00 00 00 00 00 00 00 00 82 00 37 02 00 7B
170: 03 00 01 00 01 FF 02 06 03 00 00 00 00 00 00 00
180: 00 00 05 00 00 00 00 00 01 0B 00 00 00 00 00 00
190: 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00
1A0: 00 00 00 00 C4 03 00 00 FF 04 F2 39 08 00 00 00
1B0: 00 00 00 00 01 00 02 00 CA 30 D8 32 03 00 00 00
1C0: AF 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1D0: 00 00 01 00 00 00 00 00 BB 09 00 00 01 00 00 00
1E0: 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 0B 02
1F0: 00 00 00 00 00 00 00 00 00 00 03 18 00 00 00 FB

-- SMART_READ_THRESHOLD ----------------------------------------------------
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
000: 01 00 01 2C 00 00 00 00 00 00 00 00 00 00 03 00
010: 00 00 00 00 00 00 00 00 00 00 04 14 00 00 00 00
020: 00 00 00 00 00 00 05 0A 00 00 00 00 00 00 00 00
030: 00 00 07 2D 00 00 00 00 00 00 00 00 00 00 09 00
040: 00 00 00 00 00 00 00 00 00 00 0A 61 00 00 00 00
050: 00 00 00 00 00 00 0C 14 00 00 00 00 00 00 00 00
060: 00 00 B8 63 00 00 00 00 00 00 00 00 00 00 BB 00
070: 00 00 00 00 00 00 00 00 00 00 BC 00 00 00 00 00
080: 00 00 00 00 00 00 BD 00 00 00 00 00 00 00 00 00
090: 00 00 BE 28 00 00 00 00 00 00 00 00 00 00 BF 00
0A0: 00 00 00 00 00 00 00 00 00 00 C0 00 00 00 00 00
0B0: 00 00 00 00 00 00 C1 00 00 00 00 00 00 00 00 00
0C0: 00 00 C2 00 00 00 00 00 00 00 00 00 00 00 C3 00
0D0: 00 00 00 00 00 00 00 00 00 00 C5 00 00 00 00 00
0E0: 00 00 00 00 00 00 C6 00 00 00 00 00 00 00 00 00
0F0: 00 00 C7 00 00 00 00 00 00 00 00 00 00 00 F0 00
100: 00 00 00 00 00 00 00 00 00 00 F1 00 00 00 00 00
110: 00 00 00 00 00 00 F2 00 00 00 00 00 00 00 00 00
120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C1
 
The G sense errors are where there are errors incurred by shock from vibration/drops etc. Typically in some drives, these sensors can be incredibly sensitive.

There could a few easons for this:
  • The drive is in fact defective and has a large error rate - in which case return the drive.
  • The sensor for the drive could be faulty - this is typically seen when the G sense error rate is very high despite the drive being new - if so, you can return the drive anyway as they can give you a fully functioning one.
  • The values were not zeroed on manufacturer release, so it's almost a red herring. But there is no way really to tell.
  • The software itself is not collecting information correctly, which is the same as the point above.
Have you run HD Sentinel and checked what it states as this can sometimes give some more useful information.
Sometimes you might see G sense errors correlate with reallocated or bad sectors. I'd put my bets on a faulty sensor with the number that high.
 
Jul 15, 2019
2
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10
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Thanks for the reply, I just ran HD Sentinel and it states the drive is in "Perfect health". I believe you are probably correct and it's a bad sensor, as the number was increasing during the format time. Thank you very much for the help, I greatly appreciate it.
 

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