400-BCQX: Dell 20TB 7.2K RPM SAS 12Gb/s 512e 3.5in Hot-Plug Hard Drive
Also listed as: 01Y9P0, 1Y9P0, ST20000NM002D, WUH722020AL5204 · made by Seagate
The Dell 400-BCQX is a Dell 20TB 7.2K RPM SAS 12Gb/s 512e 3.5in Hot-Plug Hard Drive delivering 20000GB of rotational storage at 7200 rpm over SAS 12Gb/s in a LFF 3.5in carrier. Manufactured by Seagate, the 400-BCQX provides dependable bulk storage for Dell R740XD, R740XD2, R750, R760 enterprise servers.
Specifications
| Part number | 400-BCQX |
|---|---|
| Brand | Dell |
| Made by | Seagate |
| Type | Hard drives |
| Other numbers | 01Y9P0, 1Y9P0, ST20000NM002D, WUH722020AL5204 |
| Status | current |
| Capacity (GB) | 20,000 |
| Interface | SAS 12Gb/s |
| Form factor | LFF 3.5in |
| Speed | 7200 rpm |
| Endurance | 550 TB/year workload rating |
About the 400-BCQX
The Dell 400-BCQX is a Dell 20TB 7.2K RPM SAS 12Gb/s 512e 3.5in Hot-Plug Hard Drive offering 20000GB of rotational enterprise storage operating at 7200 rpm over SAS 12Gb/s in a LFF 3.5in format. Built with multi-platter mechanical assemblies from Seagate, the 400-BCQX provides dependable sequential throughput and 24/7 duty-cycle durability. In Dell's storage portfolio, 400-BCQX delivers economical storage capacity for secondary storage tiers, backup targets, and media streaming pools.
Compatibility
The 400-BCQX installs directly into 3.5-inch large form factor hot-plug bays across Dell enterprise systems including R740XD, R740XD2, R750, R760. The 400-BCQX mounts inside a X7K8W (14G–16G) drive tray and connects to onboard SATA ports or PERC controllers supporting SAS 12Gb/s. Part 400-BCQX 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-BCQX units feature a Dell enterprise drive label displaying DP/N 01Y9P0, 20000GB capacity, 7200 rpm rotational speed, and Seagate model markings ST20000NM002D. In iDRAC under Physical Disks, the 400-BCQX registers with certified Dell firmware, active SMART diagnostics, and spindle temperature monitoring. The X7K8W (14G–16G) carrier for 400-BCQX includes status and activity indicator light pipes.
Buying used
When evaluating a pre-owned 400-BCQX, 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-BCQX to verify smooth bearing rotation without head-parking noise. Ensure the correct X7K8W (14G–16G) caddy is supplied with the 400-BCQX.
Fits these models
- Dell PowerEdge R740xd
- Dell PowerEdge R740xd2
- Dell PowerEdge R750
- Dell PowerEdge R760
- Dell PowerEdge R760xd2
- Dell PowerVault ME5084
- Dell PowerVault ME5012
Equivalent part numbers
- Seagate ST20000NM002D Seagate Exos X20 SAS 20TB Enterprise HDD OEM base
FAQ
What is the benefit of SAS over SATA in 20TB drives?
SAS offers native dual-port redundancy for failover across dual storage controllers and supports full-duplex communication with advanced error recovery.
Can I mix this 20TB SAS drive with SATA drives in the same RAID array?
No, SAS and SATA drives cannot be mixed within the same virtual disk array or RAID volume.
Buying or selling 400-BCQX?
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 20TB 7.2K RPM SAS 3.5-inch Enterprise Hard Drive Specifications, checked 2026-10-27