400-BDBR: Dell BOSS-S1 M.2 240GB SATA 6Gb/s Enterprise Solid State Drive
Also listed as: 0Y894N, Y894N · made by Micron
The Dell 400-BDBR is a Dell BOSS-S1 M.2 240GB SATA 6Gb/s Enterprise Solid State Drive providing hardware RAID 1 operating system boot redundancy for Dell PowerEdge R740, R640, R540, R440 servers.
Specifications
| Part number | 400-BDBR |
|---|---|
| Brand | Dell |
| Made by | Micron |
| Type | Boot devices |
| Other numbers | 0Y894N, Y894N |
| Status | current |
| Capacity (GB) | 240 |
| Interface | SATA 6Gb/s M.2 2280 |
| Form factor | M.2 2280 Card |
| Endurance | Boot-optimized enterprise endurance |
| Speed | 6Gb/s SATA |
About the 400-BDBR
The Dell 400-BDBR is a Dell BOSS-S1 M.2 240GB SATA 6Gb/s Enterprise Solid State Drive engineered for dedicated hardware RAID 1 operating system boot storage. Supporting dual M.2 SATA solid-state drives, the 400-BDBR offloads hypervisor and OS boot volumes from front storage bays, ensuring uninterrupted host booting independent of primary data storage pools.
Compatibility
Designed for Dell PowerEdge servers including R740, R640, R540, R440, the 400-BDBR installs into dedicated chassis boot bays or PCIe slots. The 400-BDBR supports M.2 SATA SSDs configured in hardware RAID 1 or pass-through mode, with validated driver support across VMware ESXi, Linux, and Windows Server.
How to identify a genuine unit
Genuine Dell units display a serialized label showing DP/N 0Y894N, BOSS controller branding, and PCIe certification markings. In iDRAC Storage inventory, the 400-BDBR controller reports as a recognized Dell boot adapter with drive status, RAID 1 mirror state, and firmware revision.
Buying used
When evaluating a pre-owned 400-BDBR, inspect the M.2 card slots, screw retention posts, and gold edge contacts for physical damage. Confirm that the hot-plug drive carriers for the 400-BDBR slide smoothly, and verify in iDRAC that both M.2 SSDs initialize in a synchronized RAID 1 volume.
Fits these models
Equivalent part numbers
- Micron 5300 PRO M.2 240GB Micron 5300 PRO M.2 SATA Enterprise SSD OEM base
FAQ
Can I use standard consumer M.2 NVMe SSDs in a BOSS-S1 card?
No, BOSS-S1 controller cards utilize SATA M.2 protocol exclusively; PCIe NVMe M.2 drives will not be detected.
What happens if one M.2 drive fails in a BOSS RAID 1 mirror?
The server continues running without interruption, and the failed M.2 drive can be replaced to automatically rebuild the mirror.
Buying or selling 400-BDBR?
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 240GB M.2 SATA Enterprise SSD for BOSS Specifications, checked 2026-10-27