Dell Connectrix MP-7850B
The Dell Connectrix MP-7850B is an advanced 1U multiprotocol SAN extension switch based on the Brocade 7850 platform. Upgrading to 32Gb Fibre Channel and 25GbE IP WAN interfaces, the MP-7850B doubles WAN replication throughput, provides hardware-accelerated IPSec and compression, and ensures continuous non-disruptive disaster recovery data flows between geographically dispersed enterprise datacenters.
Also written as: Connectrix MP-7850B, Dell Connectrix MP-7850B, MP-7850B 32Gb Extension Switch
Specifications
| Brand | Dell |
|---|---|
| Family | Connectrix |
| Form factor | 1U switch |
| Released | Jun 2021 |
| Port count | 24x 32Gb/s Fibre Channel ports + 16x 1/10/25GbE WAN extension ports in 1U |
| Wan features | Hardware-accelerated FCIP compression, byte-level deduplication, IPSec encryption, and Adaptive Rate Limiting |
| Switching bandwidth | Up to 100 Gbps WAN replication throughput |
| Operating system | Brocade Fabric OS (FOS) Gen 7 extension edition |
| Power supply | Dual redundant hot-plug power supplies with hot-swappable fan trays |
Generations
- Previous generation: Dell Connectrix MP-7840B
Compatible parts
HBAs
540-BBUU Dell Emulex LPe31002 Dual Port 16Gb Fibre Channel Host Bus Adapter
540-BBUV Dell QLogic 2692 Dual Port 16Gb Fibre Channel Host Bus Adapter
Transceivers
407-BCBI Dell 32Gb Short Wave SFP28 Fibre Channel Optical Transceiver
407-BCBF Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF)
Rail kits
770-BCKW Dell ReadyRails II Sliding Rails for 2U PowerEdge Servers (B6)
Works together
How the Dell Connectrix MP-7850B connects to servers, storage and the network: 1 way, with the parts and products on each path.
Fibre Channel SAN
Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).
Servers
Dell PowerEdge R250 1U rack
Dell PowerEdge R350 1U rack
Dell PowerEdge R450 1U rack
Dell PowerEdge R550 2U rack
Dell PowerEdge R650 1U rack
Dell PowerEdge R650xs 1U rack
Adapters for the server
540-BCMS Dell QLogic 2770 Single Port 32Gb Fibre Channel PCIe Adapter
540-BCMT Dell QLogic 2772 Dual Port 32Gb Fibre Channel PCIe Adapter
540-BCMU Dell Emulex LPe35002 Dual Port 32Gb Fibre Channel PCIe Adapter
540-BDLM Dell Emulex LPe36002 Dual Port 64Gb Fibre Channel Host Bus Adapter
Storage
Dell PowerStore 500T 2U rack
Dell PowerMax 2500 4U multi-node rack
Dell PowerMax 8500 system bay multi-enclosure
Dell PowerStore 1000T 2U rack
Dell PowerStore 1000X 2U rack
Dell PowerStore 1200T 2U rack
Optics
- 407-BCBI Dell 32Gb Short Wave SFP28 Fibre Channel Optical Transceiver
57-1000333-01 Brocade 32G FC SFP+ SWL
DS-SFP-FC32G-LW Cisco 32Gbps Fibre Channel Longwave SFP28 Transceiver
Plan and size it
- Draw this setup in the topology planner mrplanb.com
- Add up rack power and space rack-density.com
- Virtualization storage Ledger: scored storage platforms mrplanb.com
- SAN transport and NVMe over FC for backup mrplanb.com
- Dell E-Lab Navigator (Dell interoperability) dell.com
Check compatibility with Dell
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell Connectrix MP-7850B.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent models from other brands
Buying a used Connectrix MP-7850B: what to check
Confirm active WAN bandwidth licenses, verify 32Gb FC transceivers and 25GbE SFP28 optics, test dual redundant power supplies, and check fan tray airflow direction.
FAQ
How does the MP-7850B compare to the MP-7840B?
The MP-7850B condenses port density into a 1U chassis, upgrades FC ports to 32Gb, and adds 25GbE IP interfaces for higher replication bandwidth.
Does the MP-7850B support mainframe FICON extension?
Yes, with FICON extension licenses, it replicates mainframe tape and disk data across IP WANs.
Buying or selling Connectrix MP-7850B?
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 Connectrix B-Series Spec Sheet, checked 2026-10-27