400-BKHL: Dell 6.4TB NVMe Gen4 Mixed Use 2.5in Hot-Plug SSD
Also listed as: 0K11J4, K11J4, KCD61EUL6T40 · made by Kioxia
The Dell 400-BKHL is a Dell 6.4TB NVMe Gen4 Mixed Use 2.5in Hot-Plug SSD offering 6400GB of flash storage over NVMe PCIe Gen4 U.2/U.3 in a SFF 2.5in hot-plug form factor. Built with Kioxia NAND and rated for MU (3 DWPD), the 400-BKHL provides responsive storage performance for Dell R750, R650, R760, R660 servers.
Specifications
| Part number | 400-BKHL |
|---|---|
| Brand | Dell |
| Made by | Kioxia |
| Type | SSDs |
| Other numbers | 0K11J4, K11J4, KCD61EUL6T40 |
| Status | current |
| Capacity (GB) | 6,400 |
| Interface | NVMe PCIe Gen4 U.2/U.3 |
| Form factor | SFF 2.5in |
| Endurance | MU (3 DWPD) |
| Speed | PCIe 4.0 x4 |
About the 400-BKHL
The Dell 400-BKHL is a Dell 6.4TB NVMe Gen4 Mixed Use 2.5in Hot-Plug SSD providing 6400GB of enterprise solid-state storage across a NVMe PCIe Gen4 U.2/U.3 interface in an enterprise SFF 2.5in format. Built with Kioxia enterprise NAND flash memory, the 400-BKHL is rated for MU (3 DWPD) workloads, delivering low access latencies and consistent I/O throughput. In Dell's storage portfolio, 400-BKHL serves as a high-speed storage tier for transaction processing, database indexing, and virtualization clusters.
Compatibility
The 400-BKHL installs into 2.5-inch hot-plug drive bays across Dell enterprise servers including R750, R650, R760, R660. The 400-BKHL mounts inside a DXD9H (14G–16G) 2.5-inch hot-plug drive carrier with status and activity LEDs. Drive communication for the 400-BKHL requires a compatible storage controller (direct NVMe PCIe backplane cabling) supporting NVMe PCIe Gen4 U.2/U.3 protocol communication. Part 400-BKHL is designed for 2.5-inch backplanes and is not compatible with 3.5-inch bays without an approved adapter bracket.
How to identify a genuine unit
Authentic Dell enterprise solid-state drives display a silver-and-white label showing DP/N 0K11J4, 6400GB capacity, NVMe PCIe Gen4 U.2/U.3 branding, and Kioxia factory model KCD61EUL6T40. In iDRAC under Physical Disks, the 400-BKHL enumerates with certified Dell firmware revision, negotiated bus link speed, temperature telemetry, and real-time wear-out percentage monitoring.
Buying used
When sourcing a pre-owned 400-BKHL, check SMART endurance indicators using Dell OpenManage or smartctl to confirm remaining flash life, total bytes written, and zero reallocated flash blocks. Run a short and extended drive self-test on the 400-BKHL to verify interface stability without bus reset events. Confirm that the 2.5-inch drive tray on the 400-BKHL is straight with an intact release latch mechanism.
Fits these models
Equivalent part numbers
- Kioxia CM6-V 6.4TB Kioxia CM6-V Enterprise NVMe Gen4 SSD OEM base
FAQ
How many total petabytes can be written to this drive over 5 years?
At 3 DWPD, the 6.4TB model supports an astonishing 35 petabytes of lifetime host writes.
Will this drive function in a PCIe Gen3 server slot?
Yes, PCIe Gen4 NVMe drives are fully backward compatible with Gen3 backplanes, operating at Gen3 transfer speeds.
Buying or selling 400-BKHL?
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 6.4TB NVMe Gen4 Mixed Use SSD Specifications, checked 2026-10-27