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Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays Overview
Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays is a high-performance direct-attached storage (DAS) system engineered for environments that demand reliable data protection and rapid access. Designed as a rackmount storage solution with 12 drive bays, this product supports SAS HDDs, delivering robust storage capacity while utilizing a 4G 12GB/s HBA controller. It comes complete with 2 dedicated cables, enabling seamless connectivity and hot-swap drive support to ensure maximum uptime and data integrity with RAID options such as RAID 0, RAID 1, RAID 5, RAID 10, and JBOD.
Optimized for use in SMB backup, enterprise data centers, and virtualization environments, this Dell MD3400 unit offers expansion support, active cooling, and a single power supply for continuous operation. With iSCSI support and virtualization readiness, it meets the rigorous demands of media servers and critical data applications, ensuring that the solution remains both scalable and reliable across a wide range of use cases.
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Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays Specifications
- Product Type
- Storage System
- Storage Type
- DAS
- Form Factor
- Rackmount
- Bay Count
- 12-bay
- Supported Drive Types
- SAS HDD
- Hot-Swap Support
- Yes
- Max Supported Capacity
- N/A
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 10 / JBOD
- CPU Type
- N/A
- CPU Cores
- N/A
- Installed RAM
- N/A
- Max RAM Capacity
- N/A
- RAM Type
- N/A
- Network Ports
- N/A
- LAN Ports
- N/A
- USB Ports
- N/A
- Expansion Support
- Yes
- Cooling
- Active
- Power Supply
- Single
- Power Supply Wattage
- N/A
- Operating System
- N/A
- Snapshot Support
- N/A
- Cloud Sync Support
- N/A
- Virtualization Ready
- Yes
- iSCSI Support
- Yes
- Surveillance Support
- No
- Use Case
- SMB / Enterprise Data Center / Virtualization
- Product Name
- Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays
- Height
- 3.44 inches
- Width
- 19 inches
- Depth
- 28 inches
- Weight
- 45 lbs
Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays Use Case
Enterprise Virtualization Storage Consolidation with Dell MD3400
In a mid-sized IT department running VMware ESXi clusters, integrating the Dell MD3400 Controller with dual 4G 12Gb/s HBAs and 12 drive bays enables unified, high-throughput shared storage. This configuration delivers sub-millisecond latency for dozens of VMs, consolidates siloed direct-attached storage, and streamlines capacity management. Benefit: Simplified administration, 35% lower storage TCO, and scalable performance for growing virtual workloads.
High-Availability SAN for Critical SQL Database Workloads
A financial services firm requiring 24×7 uptime deployed the Dell MD3400 with redundant 4G 12Gb/s HBAs linked via dual fiber cables and 12 enterprise HDDs. The SAN appliance provides active-passive failover and multipath connectivity for Microsoft SQL Server instances. Benefit: Achieves 99.99% availability, ensures zero-data loss through RAID-6 protection, and boosts I/O throughput by 40%, meeting strict SLAs.
Cost-Effective Backup and Disaster Recovery Storage
An SMB uses the Dell MD3400 array paired with two 4G 12Gb/s HBAs and high-capacity SATA drives in its secondary data center. Backup software writes full system images and incremental snapshots across 12 drive bays, while the dual-cable setup provides redundant fiber-channel links. Benefit: Accelerates nightly backups by 50%, reduces recovery-time objective (RTO) to under 2 hours, and delivers enterprise-grade disaster recovery at a fraction of legacy SAN costs.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays |  Dell MD3400 Dual-Controller, No hdd, 12 LFF, 12G SAS Cable, SAS HD connector, 600W RPS |  Dell MD3420 Controller*1 4G 12GB/s HBA*1 Cable*1 24*Drive Bays |  Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS |  Dell MD3420 Controller*2 4G 12GB/s HBA*2 Cable*2 24*Drive Bays | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | DAS | SAN | SAN | SAN | SAN |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 12-bay | 12-bay | 24-bay | 24-bay | 24-bay |
| Supported Drive Types | SAS HDD | SATA HDD / SAS HDD | SATA HDD / SAS HDD | SAS HDD | SATA HDD / SAS HDD / SATA SSD |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | N/A | N/A | N/A | 512 TB | N/A |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 10 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | N/A | Intel Xeon | N/A | N/A | N/A |
| CPU Cores | N/A | N/A | N/A | N/A | N/A |
| Installed RAM | N/A | 4 GB | N/A | 4 GB | 8 GB |
| Max RAM Capacity | N/A | 16 GB | N/A | 4 GB | N/A |
| RAM Type | N/A | DDR3 | N/A | N/A | N/A |
| Network Ports | N/A | N/A | N/A | N/A | Fibre Channel |
| LAN Ports | N/A | N/A | N/A | N/A | N/A |
| USB Ports | N/A | N/A | N/A | N/A | N/A |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Active | Active | Active | Active |
| Power Supply | Single | Redundant | Single | Redundant | Redundant |
| Power Supply Wattage | N/A | N/A | N/A | N/A | N/A |
| Operating System | N/A | Custom OS | N/A | N/A | N/A |
| Snapshot Support | N/A | Yes | No | No | No |
| Cloud Sync Support | N/A | No | No | No | No |
| Virtualization Ready | Yes | Yes | No | Yes | Yes |
| iSCSI Support | Yes | Yes | No | Yes | N/A |
| Surveillance Support | No | No | No | No | No |
| Use Case | SMB / Enterprise Data Center / Virtualization | Enterprise Data Center / SMB / Virtualization / Media Server | Enterprise Data Center | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server |
| Product Name | Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays | Dell MD3400 Dual-Controller, No hdd, 12 LFF, 12G SAS Cable, SAS HD connector, 600W RPS | Dell MD3420 Controller*1 4G 12GB/s HBA*1 Cable*1 24*Drive Bays | Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS | Dell MD3420 Controller*2 4G 12GB/s HBA*2 Cable*2 24*Drive Bays |
| Height | 3.44 inches | N/A | N/A | N/A | N/A |
| Width | 19 inches | N/A | N/A | N/A | N/A |
| Depth | 28 inches | N/A | N/A | N/A | N/A |
| Weight | 45 lbs | N/A | N/A | N/A | N/A |
Questions & Answers
What is the Dell MD3400 Controller and what are its key features?
The Dell MD3400 Controller is a dual-active storage array controller that manages up to 12 SAS or SATA drives, delivers 12Gb/s SAS throughput, and includes advanced RAID and hot-swap capabilities.
How does the 4G 12GB/s HBA improve storage performance?
The dual 4Gb Fibre Channel, 12Gb/s SAS HBA provides high-bandwidth, low-latency host connectivity for faster data transfer and reduced I/O bottlenecks.
How many drive bays does the Dell MD3400 support and what drive types can I install?
The MD3400 supports 12 hot-swap 3.5" SAS or SATA drives, enabling flexible capacity expansion with HDDs or SSDs up to 4TB each.
Are the included cables ready for immediate installation?
Yes, the package includes two pre-terminated SAS cables that are plug-and-play for immediate rack-mount installation.
What RAID levels does the Dell MD3400 support?
The MD3400 supports RAID 0, 1, 5, 6, 10, 50, and 60, providing balanced options for performance, capacity, and data protection.
How do I install the MD3400 Controller in my server rack?
Mount the MD3400 in a standard 2U rack slot, connect the included SAS cables to your HBA ports, install drives in the bays, then power on and configure in the storage manager.
Is the Dell MD3400 compatible with existing Dell servers?
Yes, the MD3400 is fully compatible with Dell PowerEdge servers and integrates with Dell OpenManage for unified system management.
Can I expand storage capacity on the MD3400?
Yes, you can attach up to two MD1200 expansion enclosures for a total of 36 drives managed under the same controller.
What are the recommended drive types for optimal performance?
Dell recommends 10K or 15K SAS drives for high I/O workloads and SSDs for latency-sensitive applications to maximize performance.
How do I configure the HBA for host connectivity?
Use the Dell Storage Manager or host BIOS utility to assign WWNs, map LUNs, and verify zoning on the 4Gb Fibre Channel ports.
Does the MD3400 offer fault tolerance features?
Yes, the MD3400 features redundant controllers, power supplies, and hot-swappable drives to ensure continuous operation and data availability.
What is the power consumption of the MD3400 system?
Typical power consumption is 250W under load, with dual redundant 750W power supplies providing efficient energy use and N+1 redundancy.
How do I update firmware on the MD3400 Controller and HBA?
Download the latest firmware packages from Dell Support, then use Dell Repository Manager or Storage Manager to apply updates during a maintenance window.
What warranty and support options are available?
The MD3400 includes a 3-year Next Business Day hardware warranty, with optional ProSupport and ProSupport Plus plans for 24/7 direct-access assistance.
Can I mix SSDs and HDDs in the MD3400 drive bays?
Yes, you can mix SAS SSDs and HDDs within the same enclosure, though Dell recommends grouping by drive type for consistent performance.
How do I monitor storage health and performance?
Use Dell OpenManage Storage Manager to view real-time metrics, configure alerts, and generate reports on array health, capacity, and I/O performance.