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Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS
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Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS
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- Dell MD3420 StorageSystem, Dual 4G Cache Controller, No hdd, 24 SFF,SAS HD connector,600W RPS, Rack kit
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Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS Overview
Overview of "Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS". Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS is a SAN-class storage controller enclosure designed to host 24 small form factor drive bays that support SAS hard drives. Built for enterprise data centers, it provides dual 4GB cache modules in a high‐availability configuration with a redundant 600W power supply and active cooling for reliable, nonstop operation.
This solution is engineered to meet rigorous performance and reliability requirements while accommodating expansion needs. It supports multiple RAID levels including RAID 0, RAID 1, RAID 5, and RAID 10, making it ideal for SMB backups, virtualization environments, and media server applications. With its SAS HD connector interface and a rackmount form factor, this Dell solution seamlessly integrates into mission‐critical infrastructures.
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Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS Specifications
- Product Type
- Storage System
- Storage Type
- SAN
- Form Factor
- Rackmount
- Bay Count
- 24-bay
- Supported Drive Types
- SAS HDD
- Hot-Swap Support
- Yes
- Max Supported Capacity
- 512 TB
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 10
- CPU Type
- N/A
- CPU Cores
- N/A
- Installed RAM
- 4 GB
- Max RAM Capacity
- 4 GB
- RAM Type
- N/A
- Network Ports
- N/A
- LAN Ports
- N/A
- USB Ports
- N/A
- Expansion Support
- Yes
- Cooling
- Active
- Power Supply
- Redundant
- Power Supply Wattage
- N/A
- Operating System
- N/A
- Snapshot Support
- No
- Cloud Sync Support
- No
- Virtualization Ready
- Yes
- iSCSI Support
- Yes
- Surveillance Support
- No
- Use Case
- Enterprise Data Center
- Product Name
- Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS Use Case
Enterprise Virtual Desktop Infrastructure (VDI) Acceleration
In a mid-sized financial firm deploying 200+ virtual desktops, the Dell MD3420 Dual 4G Cache Controller, No HDD, 24 SFF, SAS HD connector, 600W RPS with rack kit delivers sub-millisecond I/O latency and sustained 20K+ IOPS. By leveraging dual 4GB cache controllers and high-density 24-bay SFF SAS connectivity, boot storms, profile loads and application launches complete in under 3 seconds, ensuring seamless end-user experience. Key Benefits: • 40% faster login times through advanced read/write caching • 99.99% uptime with redundant 600W power supplies • Scalable to 600TB raw capacity for future VDI growth
High-Performance SQL Database Consolidation
An e-commerce leader consolidates multiple OLTP and reporting databases onto a single Dell MD3420 Storage System equipped with Dual 4G Cache Controller, No HDD, 24 SFF, SAS HD connector, 600W RPS and rack kit. The high-speed SAS HD backplane and 4GB cache per controller optimize random write acceleration and burst reads, cutting query response times by up to 60%. Enterprise-grade reliability and redundant power ensure continuous transaction processing during peak sales events. Key Benefits: • 2× throughput improvement for mixed-workload databases • Reduced storage footprint by 50% through consolidation • Non-disruptive controller failover for zero-data-loss resilience
Scalable Backup & Disaster Recovery Storage
A global legal services provider implements the Dell MD3420 Dual 4G Cache Controller, No HDD, 24 SFF, SAS HD connector, 600W RPS with rack kit as a dedicated backup and DR target for 50 remote offices. The system’s high-density 24-bay SAS chassis and dual 4GB cache accelerate sequential writes from backup servers, completing nightly snapshots 30% faster. Redundant 600W power supplies and hot-swap drive bays minimize downtime, while seamless integration with leading backup software ensures rapid site-to-site recovery. Key Benefits: • 25% reduction in backup window with cache-accelerated writes • Rack-optimized, high-density design saves 3U of rack space • Enterprise-grade redundancy for 24×7 data protection
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS |  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 Controller*2 4G 12GB/s HBA*2 Cable*2 24*Drive Bays |  Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | SAN | SAN | SAN | DAS |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 24-bay | 12-bay | 24-bay | 24-bay | 12-bay |
| Supported Drive Types | SAS HDD | SATA HDD / SAS HDD | SATA HDD / SAS HDD | SATA HDD / SAS HDD / SATA SSD | SAS HDD |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 512 TB | N/A | N/A | N/A | N/A |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 10 | 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 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 10 / JBOD |
| 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 | 4 GB | 4 GB | N/A | 8 GB | N/A |
| Max RAM Capacity | 4 GB | 16 GB | N/A | N/A | N/A |
| RAM Type | N/A | DDR3 | N/A | N/A | N/A |
| Network Ports | N/A | N/A | N/A | Fibre Channel | N/A |
| 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 | Redundant | Redundant | Single | Redundant | Single |
| 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 | No | Yes | No | No | N/A |
| Cloud Sync Support | No | No | No | No | N/A |
| Virtualization Ready | Yes | Yes | No | Yes | Yes |
| iSCSI Support | Yes | Yes | No | N/A | Yes |
| Surveillance Support | No | No | No | No | No |
| Use Case | Enterprise Data Center | Enterprise Data Center / SMB / Virtualization / Media Server | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server | SMB / Enterprise Data Center / Virtualization |
| Product Name | Dell MD3420 Dual 4G Cache Controller, No hdd, 24 SFF, SAS HD connector, 600W RPS | 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 Controller*2 4G 12GB/s HBA*2 Cable*2 24*Drive Bays | Dell MD3400 Controller*1 4G 12GB/s HBA*2 Cable*2 12*Drive Bays |
| Height | N/A | N/A | N/A | N/A | 3.44 inches |
| Width | N/A | N/A | N/A | N/A | 19 inches |
| Depth | N/A | N/A | N/A | N/A | 28 inches |
| Weight | N/A | N/A | N/A | N/A | 45 lbs |
Questions & Answers
What is the Dell MD3420 StorageSystem (SKU: MD3420)?
The Dell MD3420 StorageSystem (SKU: MD3420) is a 2U rack-mountable enclosure featuring dual 4GB battery-backed write cache controllers, 24 small form factor drive bays, SAS HD connectors, and a 600W redundant power supply.
How many drives can the MD3420 support?
The MD3420 supports up to 24 hot-swappable 2.5" SAS or nearline SAS HDDs/SSDs in its small form factor drive bays.
Does the Dell MD3420 come with hard drives included?
No, this configuration ships without hard drives, enabling you to choose the optimal SAS or SSD models for your performance and capacity needs.
What type of drive interface does the MD3420 use?
The MD3420 uses 6 Gbps SAS HD connectors for high-throughput communication with compatible SAS or SAS SSD drives.
What cache architecture is implemented in the MD3420?
The MD3420 features dual active/active controllers, each with 4 GB of battery-backed write cache to accelerate I/O operations and protect data.
Which RAID levels are supported on the Dell MD3420?
Dell MD3420 supports RAID 0, 1, 5, 6, 10, 50, and 60, offering flexible trade-offs between performance, capacity, and data protection.
What power supply configuration does the MD3420 include?
This system includes a hot-swappable 600W redundant power supply (RPS) to ensure continuous uptime and high availability.
Is a rack mounting kit provided with the MD3420?
Yes, the Dell MD3420 comes with a 2U rack‐mount kit compatible with standard 19-inch server racks for easy installation.
How is the Dell MD3420 managed?
Storage management is performed via Dell Storage Manager (DSM) or the integrated command-line interface, providing intuitive monitoring, provisioning, and alerting.
Can I expand the MD3420’s capacity beyond 24 drives?
Yes, you can scale up to 96 drives by attaching up to three Dell MD1220 expansion enclosures via the integrated SAS ports.
Does the MD3420 offer controller redundancy?
Yes, its dual-controller design delivers non-disruptive failover, maintaining data access if one controller fails.
What are the physical dimensions of the Dell MD3420?
The MD3420 measures 2U in height, 17.2 inches in depth, and fits within any standard 19-inch rack cabinet.
What are the primary use cases for the MD3420 StorageSystem?
The MD3420 is ideal for SMB virtualization, database acceleration, and file‐sharing workloads requiring high IOPS, reliability, and efficient scaling.
Can I install SSDs in the Dell MD3420?
Yes, you can populate its 24 SFF bays with SAS or nearline SAS SSDs to achieve high random performance or configure an all-flash array.
What warranty and support options are available for the MD3420?
Dell provides a three-year limited hardware warranty with next-business-day on-site service, plus optional ProSupport and extended coverage plans.
Which hosts are compatible with the Dell MD3420 SAS StorageSystem?
The MD3420 is compatible with any server or host bus adapter supporting 6 Gbps SAS, including Dell PowerEdge and third-party servers with SAS HBA cards.