QDiskInfo 0.4 reports Total Host Reads 279.6 TB, but the drive was barely in use, zero writes, power on hours 804, power cycle count 207 and only a couple of Total LBAs read:
# smartctl -a /dev/sdc
smartctl 7.5 2025-04-30 r5714 [x86_64-linux-6.18.9-arch1-2] (local build)
Copyright (C) 2002-25, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda XT
Device Model: ST32000641AS
Serial Number: ********
LU WWN Device Id: 5 000c50 02df9e3dd
Firmware Version: CC13
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Device is: In smartctl database 7.5/5706
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 2.6, 6.0 Gb/s
Local Time is: Wed Feb 18 19:25:50 2026 CET
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
See vendor-specific Attribute list for marginal Attributes.
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
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: ( 609) 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 336) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 100 099 006 Pre-fail Always - 2751500
3 Spin_Up_Time 0x0003 100 100 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 227
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 100 253 030 Pre-fail Always - 36093
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 804
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 207
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 47245361163
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 077 040 045 Old_age Always In_the_past 23 (12 21 23 21 0)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 14
193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 242
194 Temperature_Celsius 0x0022 023 060 000 Old_age Always - 23 (0 19 0 0 0)
195 Hardware_ECC_Recovered 0x001a 008 007 000 Old_age Always - 2751500
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 1342 (230 10 0)
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 0
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 279615
QDiskInfo 0.4 reports Total Host Reads 279.6 TB, but the drive was barely in use, zero writes, power on hours 804, power cycle count 207 and only a couple of Total LBAs read: