Certified unit report
Unit U-221 · WDC WD181KRYZ 18TB
Tested Sep 24, 2026 · Value · full serial on your in-box certificate
Warranty: 12 months from delivery
SMART healthPass
| Attribute | This unit | Our pass rule | |
|---|---|---|---|
| 5 · Reallocated sectors | 0 | must be 0 | |
| 197 · Pending sectors | 0 | must be 0 | |
| 187/198 · Uncorrectable errors | 0 | must be 0 | |
| Grown defect list | 0 | must be 0 | |
| 9 · Power-on hours | 47,965 | disclosed, never reset | |
| 12 · Power cycles | 126 | disclosed |
Capacity bytes18,000,207,937,536
InterfaceSATA 6Gb/s
Temperature c32
PassedYes
Extended self-testPass
ResultCompleted without error
Poh at test47,921
Nominal duration min1,931
Actual duration min1,560
Suspect protocol runNo
Measured benchmarkPass
Sequential read / write275.7 / 274 MB/s
Random 4k read / write206 / 651 IOPS
Runtime s per job60
Seq bs1M
Rand bs4k
Iodepth32
Odometer authenticityVerified
Vendor log cross-check passed: the drive's internal factory log agrees with its SMART hours. A wiped or rolled-back odometer would disagree. We run this check on every unit.
Methoddevstat
Smart hours47,922
Secondary hours47,922
Delta hours0
AgreesYes
Data wipeComplete
Previous dataWiped · verified
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