Western Digital
WUH721818AL5205 - Western Digital Ultrastar 18TB 7.2K SAS 3.5-In HDD
PNWUH721818AL5205
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SKU WUH721818AL5205
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Western Digital WUH721818AL5205 Ultrastar DC HC550 18TB 7200RPM SAS 12Gbps 512MB Cache 512 3.5-Inch Hard Drive
Ultrastar DC HC550 WUH721818AL5205 is a high-performance 7200 RPM drive offering 18TB capacity. With SAS 12Gb/s interface, it delivers reliable, high-speed data transfer for traditional and cloud-based data centers. HelioSeal technology enhances efficiency and longevity, while the 3.5-Inch form factor ensures seamless integration.
- 512MiB Memory
- Fluid Dynamic Bearing motor
- Automatic Actuator lock
- Triple Stage Actuator
- PSID support for secure data management
- S.M.A.R.T. monitoring drives health to predict failures.
- RVS maintains performance in high-vibration environments
- Power saving modes/Low RPM idle mode (APM) reduces power consumption
General Information
| Product Line | Ultrastar |
|---|---|
| Product Series | DC HC550 |
| Product Type | Hard Drive |
Technical Information
| Storage Capacity | 18 TB |
|---|---|
| Cache Storage | 512MB |
| Maximum Data Transfer Rate | 12Gb/s |
| RPM | 7200 |
| Drive Type | Internal |
| Drive Width | 3.5" |
Interfaces/Ports
| Drive Interface | SAS |
|---|---|
| Interface Standard | 12Gb/s SAS |
Miscellaneous
| Compliance Standards | RoHS |
|---|
Also known as — equivalent part numbers
This part is sold under the following identifiers. Search any of them to reach this page.
- Primary part number
- WUH721818AL5205
Warranty
Warranty included, backed directly by SAHS. See our Warranty Policy for details.
Returns
Contact our team with your order details and we'll walk you through the process — see our Shipping & Returns page and policies for full details.
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