Dell PowerProtect DD6400
The Dell PowerProtect DD6400 is an all-in-one 2U protection storage appliance built for mid-market environments needing reliable backup performance without external storage shelves. Starting at 8TB of usable capacity and growing up to 216TB physically in-box and in external shelves, the DD6400 delivers enterprise deduplication and ransomware protection in a compact form factor.
Also written as: PowerProtect DD6400, Dell DD6400, DD6400 Midrange Appliance
Specifications
| Brand | Dell |
|---|---|
| Family | PowerProtect DD |
| Form factor | 2U appliance |
| Released | Sep 2019 |
| Cpu platform | Dual Intel Xeon Silver 2nd Gen processors |
| Memory max (GB) | 96 |
| Raw capacity | Up to 216TB raw / 11.2PB logical usable capacity with Cloud Tier |
| Ingest throughput | Up to 27.7 TB/hr with DD Boost |
| Network onboard | Modular I/O supporting 25GbE SFP28, 10GbE, and 16Gb Fibre Channel |
| Power supply | Dual redundant hot-plug 750W power supplies |
Generations
- Previous generation: Dell PowerProtect DD Data Domain DD6300
Compatible parts
HBAs
540-BCMT Dell QLogic 2772 Dual Port 32Gb Fibre Channel PCIe Adapter
540-BCMU Dell Emulex LPe35002 Dual Port 32Gb Fibre Channel PCIe 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)
Drive caddies
DXD9H Dell 2.5-inch Gen14/Gen15/Gen16 Hot-Plug Drive Caddy Tray (SFF)
SSDs
400-AZPZ Dell 1.92TB SAS Read Intensive 12Gb/s 2.5-inch Hot-Plug SSD
400-BDSD Dell 3.84TB SAS Read Intensive 12Gb/s 2.5-inch Hot-Plug SSD
Works together
How the Dell PowerProtect DD6400 connects to servers, storage and the network: 2 ways, 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 R240 1U rack
Dell PowerEdge R340 1U rack
Dell PowerEdge R6415 1U rack
Dell PowerEdge R740xd2 2U rack
Dell PowerEdge R7415 2U rack
Dell PowerEdge R7425 2U rack
Adapters for the server
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
540-BCMS Dell QLogic 2770 Single Port 32Gb Fibre Channel PCIe Adapter- 540-BCMT Dell QLogic 2772 Dual Port 32Gb Fibre Channel PCIe Adapter
Switches
Dell Connectrix MDS-9148T 1U rack
Dell Connectrix DS-6610B 1U rack
Dell Connectrix DS-6630B 2U switch
Dell Connectrix ED-DCX7-8B 14U director chassis
Optics
407-BBOG Dell 16Gb Short Wave SFP+ Fibre Channel Optical Transceiver- 407-BCBI Dell 32Gb Short Wave SFP28 Fibre Channel Optical Transceiver
57-1000262-01 Brocade 16G FC SFP+ ELWL 25 km
iSCSI and NVMe/TCP over Ethernet
Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.
Servers
Dell PowerEdge R6515 1U rack
Dell PowerEdge R7515 2U rack
Dell PowerEdge R6525 1U rack
Dell PowerEdge R7525 2U rack- Dell PowerEdge R240 1U rack
- Dell PowerEdge R340 1U rack
Adapters for the server
540-BBGN Dell Broadcom 57412 Dual Port 10GbE SFP+ PCIe Adapter
540-BBGO Dell Broadcom 57416 Dual Port 10GBASE-T RJ45 PCIe Adapter
540-BBGP Dell Broadcom 57416 Dual Port 10GBASE-T RJ45 OCP 3.0 Adapter
540-BBGY Dell Broadcom 57414 Dual Port 10/25GbE SFP28 PCIe Low Profile Network Adapter
Switches
Dell PowerSwitch N3224F-ON 1U switch
Dell PowerSwitch N3224P-ON 1U switch
Dell PowerSwitch N3224T-ON 1U switch
Dell PowerSwitch N3248P-ON 1U switch
Optics
407-BBOU Dell 10GbE SFP+ SR Optical Transceiver (850nm, 300m MMF)- 407-BCBF Dell 25GbE SFP28 SR Optical Transceiver (850nm, 100m MMF)
SFP-10G-LR-AR Arista 10GBASE-LR SFP+ Optical Transceiver Module
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 PowerProtect DD6400.
- 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 PowerProtect DD6400: what to check
Verify internal drive configuration and factory capacity license keys, inspect 25GbE optical ports, check 750W power supplies, and test front drive status indicators.
FAQ
Can the DD6400 grow capacity without adding external shelves?
Yes, raw capacity can be activated on-demand inside the base 2U enclosure via software capacity licenses.
Does the DD6400 support Fibre Channel VTL?
Yes, optional FC PCIe modules allow presenting virtual tape libraries directly to Fibre Channel SAN hosts.
Buying or selling PowerProtect DD6400?
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 PowerProtect DD6400 Spec Sheet, checked 2026-10-27