Used
$25.86/TB
18TBSATA
WD Gold 18TB WD181KRYZ SATA 6Gb/s 7200RPM 3.5in HDD (Used, Tested)
WD
$465.46
2 leftWestern DigitalSATA18TB3.5 in
Western Digital WD Gold 18TB SATA (WD181KRYZ)Specs, test results and price
2 in stock from $465.46 · 3 units tested in-house
In stock now (1)
About the WD181KRYZ
The Western Digital WD Gold 18TB (WD181KRYZ) is a 3.5 inch SATA hard drive built for server and storage array use, offering 18TB of capacity over a SATA 6Gb/s interface. This page covers the units of this specific part number that this store has tested and has in stock.
Each of the 3 units tested here passed every check. All three units have power-on hours between about 47,965 and 48,723, placing them in the Value tier (over 40,000 hours on record). Sequential benchmark results across the tested units showed a median read speed of 261 MB/s and a median write speed of 274 MB/s.
Because this is a SATA 6Gb/s, 3.5 inch drive, it fits standard server and desktop SATA bays and controllers without special adapters. Every unit that passes through this store's process is benchmarked, run through a full surface self-test, checked against SMART health data, and sanitized before being offered for sale.
Specifications
| Brand | Western Digital |
|---|---|
| Part number | WD181KRYZ |
| Type | Hard drive |
| Capacity | 18TB |
| Interface | SATA 6Gb/s |
| Form factor | 3.5 in |
Tested units
- Units tested
- 3
- Pass rate
- 100% (3 of 3)
- Units sold
- 1
- Power-on hours, median
- 48,415 h
- Power-on hours, range
- 47,965 to 48,723 h
- First tested
- Aug 25, 2026
- Last tested
- Sep 24, 2026
- Sequential read, median
- 261 MB/s
- Sequential write, median
- 274 MB/s
Every unit of this model we have handled, from our test database. What we test
Hours distribution
- Value over 40,000 hrs3 units · 100%
Units by usage tier, from their SMART power-on hours. How tiers work
Recent unit reports
Every unit we sell gets a permanent public report. Serial and seal numbers stay on the certificate in the box.
| Unit | Tier | Power-on hours | Tested | Result | Report |
|---|---|---|---|---|---|
| U-221 | Value | 47,965 | Sep 24, 2026 | Pass | View report for unit U-221 |
| U-104 | Value | 48,723 | Aug 25, 2026 | Pass | View report for unit U-104 |
| U-103 | Value | 48,415 | Aug 25, 2026 | Pass | View report for unit U-103 |
Price history
Monthly median of what our own WD181KRYZ units sold for.
| Month | Median price |
|---|---|
| Oct 2026 | $479.95 |
WD181KRYZ questions
What is this drive typically used for?+
The WD181KRYZ is a SATA hard drive aimed at server and storage array workloads that need large capacity, such as bulk storage, backups, or secondary tiers in a storage array.
What interface and physical format does this drive use?+
It uses a SATA 6Gb/s interface in a 3.5 inch form factor, so it works with standard SATA server and desktop bays and controllers.
What does this store check on each unit before selling it?+
Each unit goes through a sequential and random read/write benchmark, a full extended self-test across the whole surface, a power-on hours cross-check against an independent on-drive log, SMART health checks for reallocated, pending, and uncorrectable sectors, and a NIST 800-88 sanitize with read-back verification.
What does the Value usage tier mean for this drive?+
The Value tier indicates units with over 40,000 recorded power-on hours. The 3 units tested for this part number all fall in this tier, with hours ranging from about 47,965 to 48,723.
How was data removed from these drives before resale?+
All 3 tested units were sanitized using ATA Secure Erase as part of the NIST 800-88 process, with read-back verification performed afterward.