[smartmontools-support] nvme 'Data Units Read' and 'Data Units Written' question.

[Robert Fantini]

Hello


We just received a used INTEL 2TB Nvme .    Below is smartctl output.

These are very high,   could the math be incorrect?
Data Units Read:                    30,035,247,693 [15.3 PB]
Data Units Written:                 11,932,680,343 [6.10 PB]

PS: thank you for the great tool.

---------------------------------------------------

smartctl -a  /dev/nvme0
# smartctl -a  /dev/nvme0
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.18-16-pve] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number:                       INTEL SSDPEDMD020T4
Serial Number:                      PHFT6201004W2P0EGN
Firmware Version:                   8DV10171
PCI Vendor/Subsystem ID:            0x8086
IEEE OUI Identifier:                0x5cd2e4
Controller ID:                      0
Number of Namespaces:               1
Namespace 1 Size/Capacity:          2,000,398,934,016 [2.00 TB]
Namespace 1 Formatted LBA Size:     512
Local Time is:                      Sat Jun 29 11:21:03 2019 EDT
Firmware Updates (0x02):            1 Slot
Optional Admin Commands (0x0006):   Format Frmw_DL
Optional NVM Commands (0x0006):     Wr_Unc DS_Mngmt
Maximum Data Transfer Size:         32 Pages

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
 0 +    25.00W       -        -    0  0  0  0        0       0

Supported LBA Sizes (NSID 0x1)
Id Fmt  Data  Metadt  Rel_Perf
 0 +     512       0         2
 1 -     512       8         2
 2 -     512      16         2
 3 -    4096       0         0
 4 -    4096       8         0
 5 -    4096      64         0
 6 -    4096     128         0

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff)
Critical Warning:                   0x00
Temperature:                        26 Celsius
Available Spare:                    100%
Available Spare Threshold:          10%
Percentage Used:                    7%
Data Units Read:                    30,035,247,693 [15.3 PB]
Data Units Written:                 11,932,680,343 [6.10 PB]
Host Read Commands:                 658,041,251,076
Host Write Commands:                58,258,930,250
Controller Busy Time:               9,178
Power Cycles:                       9
Power On Hours:                     11,524
Unsafe Shutdowns:                   8
Media and Data Integrity Errors:    0
Error Information Log Entries:      0

Error Information (NVMe Log 0x01, max 64 entries)
No Errors Logged
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