Dell (Kit) BOSS-S1 RAID Controller Card with 2x 240GB M.2 SATA 2280 SSD

The Dell BOSS-S1 (Boot Optimized Storage Solution) RAID Controller Kit is a dedicated boot storage solution designed for Dell PowerEdge servers. It hosts the operating system on two M.2 SATA SSDs, typically configured in RAID 1 (mirroring) to provide redundancy and improved reliability for OS-level storage.

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Product Overview

• Product Type: Boot Optimized Storage Solution (BOSS-S1) Kit

• Primary Use: Dedicated OS boot device

• Included Drives: 2 × 240GB M.2 SATA 2280 SSDs

• Total Raw Capacity: 480GB

• Usable Capacity (RAID 1): 240GB

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BOSS-S1 Controller Specifications

Feature	Detail
Interface	PCIe Gen 2.0 x8 connector (uses x2 lanes)
Form Factor	PCIe adapter card (Low-profile or Full-height depending on kit)
Supported Drives	Up to two M.2 SATA 6Gbps SSDs
Supported M.2 Size	2280 (22mm x 80mm)
RAID Support	RAID 1 (Mirroring only)
Non-RAID Mode	Supports independent disks in AHCI mode
Maximum Virtual Disks	1
Stripe Size	Default 64K only
Cache Type	Write-through only (No BBU / No NV cache)
Management Tools	iDRAC, OpenManage Server Administrator

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Included SSD Specifications (Per Drive)

• Capacity: 240GB

• Interface: M.2 SATA 6Gbps

• Form Factor: M.2 2280

• Workload Type: Enterprise, read-intensive

• Deployment Purpose: Operating system boot storage

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Supported BOSS-S1 Card Variants in This Kit

This kit may include one of the following genuine Dell BOSS-S1 controller part numbers (functionally equivalent):

• K4D64 0K4D64

• 72WKY 072WKY

• M7W47 0M7W47

• 51CN2 051CN2

• 61F54 061F54

• 7HYY4 07HYY4

• 3JT49 03JT49

• JV70F 0JV70F

• 5T20H 05T20H

Note: Card part number may vary depending on inventory, but all listed variants are Dell BOSS-S1 RAID controllers with identical core functionality.

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Key Benefits

• Dedicated OS boot solution (separates OS from primary storage array)

• RAID 1 redundancy for increased reliability

• Managed directly through Dell server management tools

• Ideal for virtualization hosts and enterprise deployments

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Ideal Applications

• Dell PowerEdge servers

• Virtualization hosts (VMware, Hyper-V, Linux)

• Enterprise OS boot environments

• Data center deployments requiring redundant boot media