400-BCQW: Dell 18TB 7.2K RPM 512e SAS 12Gb/s 3.5-inch Hot-Plug Hard Drive
Also listed as: 01H2JY, 1H2JY, WUH721818AL5204 · made by Western Digital
The Dell 400-BCQW is a Dell 18TB 7.2K RPM 512e SAS 12Gb/s 3.5-inch Hot-Plug Hard Drive delivering 18000GB of rotational storage at 10000 rpm over SAS 12Gb/s in a 3.5-inch LFF hot-plug carrier. Manufactured by Western Digital, the 400-BCQW provides dependable bulk storage for Dell R750, R760, R760XD2, ME5084 enterprise servers.
Specifications
| Part number | 400-BCQW |
|---|---|
| Brand | Dell |
| Made by | Western Digital |
| Type | Hard drives |
| Other numbers | 01H2JY, 1H2JY, WUH721818AL5204 |
| Status | current |
| Capacity (GB) | 18,000 |
| Interface | SAS 12Gb/s |
| Form factor | 3.5-inch LFF hot-plug |
| Spindle speed rpm | 7,200 |
| Sector format | 512e Advanced Format |
About the 400-BCQW
The Dell 400-BCQW is a Dell 18TB 7.2K RPM 512e SAS 12Gb/s 3.5-inch Hot-Plug Hard Drive offering 18000GB of rotational enterprise storage operating at 10000 rpm over SAS 12Gb/s in a 3.5-inch LFF hot-plug format. Built with multi-platter mechanical assemblies from Western Digital, the 400-BCQW provides dependable sequential throughput and 24/7 duty-cycle durability. In Dell's storage portfolio, 400-BCQW delivers economical storage capacity for secondary storage tiers, backup targets, and media streaming pools.
Compatibility
The 400-BCQW installs directly into 3.5-inch large form factor hot-plug bays across Dell enterprise systems including R750, R760, R760XD2, ME5084. The 400-BCQW mounts inside a X7K8W (14G–16G) drive tray and connects to onboard SATA ports or PERC controllers supporting SAS 12Gb/s. Part 400-BCQW is formatted for 3.5-inch large form factor slots and is not compatible with 2.5-inch SFF chassis drive bays.
How to identify a genuine unit
Genuine 400-BCQW units feature a Dell enterprise drive label displaying DP/N 01H2JY, 18000GB capacity, 10000 rpm rotational speed, and Western Digital model markings WUH721818AL5204. In iDRAC under Physical Disks, the 400-BCQW registers with certified Dell firmware, active SMART diagnostics, and spindle temperature monitoring. The X7K8W (14G–16G) carrier for 400-BCQW includes status and activity indicator light pipes.
Buying used
When evaluating a pre-owned 400-BCQW, check SMART logs via OpenManage or smartctl to verify zero reallocated sectors (attribute 0x05) and zero pending defects (attribute 0xC5). Check power-on hours and execute an extended drive self-test on the 400-BCQW to verify smooth bearing rotation without head-parking noise. Ensure the correct X7K8W (14G–16G) caddy is supplied with the 400-BCQW.
Fits these models
- Dell PowerEdge R750
- Dell PowerEdge R760
- Dell PowerEdge R760xd2
- Dell PowerVault ME5084
- Dell PowerScale A300
Equivalent part numbers
- Western Digital Ultrastar DC HC550 WD Ultrastar 18TB helium enterprise SAS HDD
FAQ
What is the capacity of 400-BCQW?
18TB (18,000 GB) raw formatted capacity in 512e Advanced Format.
What servers support this 18TB drive?
Dell 14G, 15G, and 16G PowerEdge servers and PowerVault ME4/ME5 series with 3.5-inch drive bays.
Buying or selling 400-BCQW?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell 18TB SAS HDD Product Details, checked 2026-10-27