DEDICATED BOOT STORAGE
Dell BOSS-N1 Boot Controllers & M.2 Boot SSDs
Genuine Dell BOSS and BOSS-N1 boot controllers with matched M.2 SATA and NVMe boot SSDs, separating the operating system drive from data storage for fast, reliable server boot.
BOSS (Boot Optimized Server Storage) puts the operating system on dedicated M.2 drives so data disks can be configured without touching the boot volume. We supply the genuine Dell BOSS-N1 controller and the exact M.2 SSDs for it, confirmed against your server model.
Boot storage we supply
BOSS-N1 controller cards
Current-generation boot controllers that take M.2 NVMe SSDs, available in the standard and modular form for supported chassis.
Classic BOSS controllers
The earlier BOSS controller card using M.2 SATA SSDs, for older or existing PowerEdge builds.
M.2 NVMe boot SSDs
Read-intensive M.2 NVMe SSDs in 480GB and 960GB validated for BOSS-N1 carriers.
M.2 SATA boot SSDs
240GB and higher M.2 SATA SSDs used with the original BOSS controller.
M.2 PCIe carrier cards
PCIe carrier cards that hold two or four M.2 SSDs for platforms without a dedicated BOSS slot.
SED boot options
Self-encrypting M.2 SSDs where the boot volume needs hardware encryption alongside the BOSS controller.
Common applications
- Separating the operating system from data drives on a new server
- Adding a redundant dedicated boot volume with BOSS-N1
- Replacing a failed BOSS controller or M.2 boot SSD
- Adding boot storage using an M.2 PCIe carrier card
BOSS and M.2 boot options at a glance
| Controllers | BOSS (classic) and BOSS-N1, including modular BOSS-N1 |
|---|---|
| BOSS-N1 drives | M.2 NVMe SSDs in validated capacities |
| Classic BOSS drives | M.2 SATA SSDs such as 240GB |
| Capacities | 240GB, 480GB, 960GB and higher M.2 options |
| Form factors | M.2 2280/22110 sticks and dedicated BOSS carriers |
| PCIe carriers | Cards holding up to two or four M.2 SSDs |
| Condition | New genuine Dell controllers and SSDs by model |
Dell BOSS boot controller & M.2 SSD part numbers
Dell 403- order codes for BOSS-S1 (M.2 SATA), BOSS-S2 and BOSS-N1 (M.2 NVMe) boot controllers, plus the M.2 boot SSDs and PCIe carriers used with them. BOSS keeps the operating system on mirrored RAID 1 M.2 modules separate from data drives; the controller slot (PCIe, DC-MHS or MX mezzanine) is chassis specific — match your service tag.
BOSS boot controllers (S1 / S2 / N1) 13
| BOSS-S1 boot controller, dual M.2 SATA, RAID 1, blade module | 403-BBYO |
| BOSS-S1 boot controller, dual M.2 SATA, RAID 1, full-height adapter | 403-BCHD |
| BOSS-S1 boot controller, dual M.2 SATA, RAID 1, full-height adapter | 403-BCHW |
| BOSS-S2 boot controller, dual M.2 SATA, RAID 1, controller card | 403-BCNI |
| BOSS-N1 boot controller, MX mezzanine, dual M.2 NVMe, RAID 1 | 403-BCRP |
| BOSS-N1 boot controller, PCIe card, dual M.2 NVMe, RAID 1 | 403-BCRY |
| BOSS-N1 boot controller, dual M.2 NVMe, RAID 1, controller card | 403-BCSC |
| BOSS-N1 boot controller, PCIe card, dual M.2 NVMe, RAID 1 | 403-BCSG |
| BOSS-N1 boot controller, dual M.2 NVMe, RAID 1, controller card | 403-BCSI |
| BOSS-N1 boot controller, PCIe card, dual M.2 NVMe, RAID 1 | 403-BDKR |
| BOSS-N1 boot controller, PCIe card, dual M.2 NVMe, RAID 1 | 403-BDMP |
| BOSS-N1 boot controller, DC-MHS modular, dual M.2 NVMe, RAID 1 | 403-BDPQ |
| BOSS-N1 boot controller, DC-MHS modular, dual M.2 NVMe, RAID 1 | 403-BDQT |
M.2 boot SSDs & PCIe carriers 11
| M.2 SATA SSD 240GB 6Gbps single stick (BOSS) | 400-ASDQ |
| M.2 NVMe SSD 480GB read-intensive for BOSS-N1 | 400-BSKJ |
| M.2 NVMe SSD 960GB read-intensive for BOSS-N1 | 400-BSKH |
| M.2 NVMe SSD 960GB 512e single stick | 400-BONI |
| M.2 NVMe SSD 960GB read-write single stick N1 | 400-BONH |
| M.2 NVMe SED SSD 960GB single stick N1 | 400-BPWY |
| M.2 NVMe SSD 480GB ISE Gen3 PCIe carrier | 400-BOPZ |
| M.2 NVMe SSD 960GB single stick 22×80 carrier | 400-BOPY |
| PCIe carrier card for up to 2x M.2 SSDs (Gen4 FH) | 400-BOLE |
| PCIe carrier card for up to 4x M.2 SSDs (Gen4 FH) | 400-BPJP |
| M.2 NVMe SSD 960GB read-intensive for PCIe riser | 345-BKSQ |
What to specify when ordering
- Server model and service tag
- BOSS or BOSS-N1 generation supported by the chassis
- Required boot capacity and SATA or NVMe interface
- Whether a PCIe M.2 carrier card is needed
Frequently asked questions
What is Dell BOSS-N1?
BOSS-N1 (Boot Optimized Server Storage) is a Dell controller that holds M.2 NVMe SSDs dedicated to the operating system, keeping boot storage separate from the data drives.
Why separate the boot drive from data storage?
A dedicated boot volume lets you reconfigure, replace or encrypt data disks without affecting the operating system, and gives faster, more predictable server boot and updates.
What is the difference between BOSS and BOSS-N1?
The original BOSS uses M.2 SATA SSDs, while BOSS-N1 uses M.2 NVMe SSDs and is offered in standard and modular form factors on newer PowerEdge servers.
Can I use any M.2 SSD in a BOSS-N1 card?
Use the Dell-validated M.2 NVMe SSDs for the specific BOSS-N1 carrier and server; generic M.2 drives may not be recognised or supported. We confirm the exact drive.
What capacity do I need for a boot SSD?
Most operating systems boot comfortably from 240GB to 480GB; 960GB gives headroom for larger hypervisors, logging or local recovery partitions.
Does BOSS-N1 provide boot redundancy?
BOSS cards can be configured with the supported M.2 drives to protect the boot volume according to the controller and platform capabilities; we confirm the supported setup for your server.
Can I add BOSS-N1 to an existing server?
If the chassis supports the relevant BOSS-N1 carrier or slot, yes. Send your model and service tag and we confirm the controller and M.2 SSDs that fit.
What is an M.2 PCIe carrier card?
It is a PCIe card that holds two or four M.2 SSDs, used on platforms that do not have a dedicated BOSS slot but still need separate boot storage.
Are BOSS boot SSDs SATA or NVMe?
Classic BOSS uses M.2 SATA SSDs and BOSS-N1 uses M.2 NVMe SSDs; the two are not interchangeable across controllers.
Are these new genuine Dell parts?
Yes. We supply new genuine Dell BOSS/BOSS-N1 controllers and validated M.2 SSDs, matched to the server rather than generic consumer drives.
Can I order just the M.2 SSD without the controller?
Yes. If you already have a BOSS or BOSS-N1 card you can order a replacement or extra validated M.2 SSD for it.
Do BOSS-N1 SSDs support self-encryption?
Selected M.2 SED options are available for encrypted boot volumes; tell us if you require a self-encrypting boot drive and we confirm the part.
Will the server still boot if one M.2 drive fails?
That depends on the supported boot configuration. We can advise on the redundant setup for your BOSS generation so the operating system remains available after a drive failure.
How are BOSS cards and SSDs shipped?
Controllers and M.2 SSDs are packed in protective anti-static packaging and can be shipped individually or consolidated with a server or storage order.
Request a quotation for this part
Share your model or service tag and the configuration you need. We confirm compatibility, then provide fixed pricing and shipping options.
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