345-BJCK Dell 3.84 TB PCI-E Gen4 NVMe U.2 2.5 Inch SSD.

Dell 345-BJCK — Enterprise-grade 3.84TB PCIe Gen4 NVMe U.2 SSD

High-capacity, low-latency storage engineered for data centers

The Dell 345-BJCK is a 3.84 terabyte enterprise solid state drive built on PCIe 4.0 NVMe technology in a 2.5" U.2 (SFF) package. Designed for demanding server workloads, this drive pairs modern NVMe throughput with TLC 3D NAND reliability to deliver rapid random I/O, high sustained bandwidth, and the low-latency responses that latency-sensitive applications require. With a 1 DWPD endurance rating and advanced flash management, it’s optimized for mixed read/write enterprise use.

Key technical specifications

• Manufacturer / SKU: Dell — 345-BJCK
• Capacity: 3.84 TB usable storage
• Interface: PCIe 4.0 ×4, NVMe protocol
• Form factor: U.2 2.5" (SFF, hot-pluggable)
• NAND type: TLC 3D NAND (advanced lithography)
• Endurance: 1 Drive Write Per Day (1 DWPD)
• Intended product class: Enterprise / datacenter NVMe SSD

Performance profile

Leveraging PCIe Gen4 lanes, the 345-BJCK significantly increases sequential throughput and IOPS versus previous-generation NVMe drives. This makes it suitable for virtualization, database acceleration, high-performance file services, and caching tiers. The TLC 3D NAND balances cost and endurance, offering predictable performance across sustained workloads while keeping total cost of ownership efficient.

Reliability & endurance features

Enterprise-focused firmware and wear-leveling algorithms protect data integrity and extend media life. With the 1 DWPD rating, the drive supports consistent rewrite cycles appropriate for many server workloads. Built-in error correction, power-loss protection mechanisms, and SMART reporting provide robust safeguards for production environments.

Compatibility — Dell PowerEdge systems

This SSD is validated for use in a wide selection of Dell PowerEdge servers. The list below outlines models commonly certified to accept U.2 NVMe drives like the 345-BJCK. Use your server’s firmware and storage controller compatibility matrices for final validation before purchase or deployment.

• Rack and dense compute: PowerEdge R440, R640, R650, R650xs, R660, R660xs, R670, R740xd, R7425, R750, R750xa, R760, R760xa, R760xd2, R770, R840, R940, R940xa, R960
• High-core/accelerated systems: PowerEdge XE8640, XE9640, XE9680
• GPU / accelerator-focused nodes: PowerEdge C6420, C6525, C6620
• Storage-optimized / single-socket & specialty: PowerEdge R6415, R6515, R6615, R7515, R7615, R7625, R7525
• Tower and scale-up servers: PowerEdge T550, T560, R740xd (also listed above where relevant)
• Legacy and high-availability models: PowerEdge R440, R770, R840 and other enterprise-class chassis supporting U.2 NVMe

Procurement and total cost of ownership (TCO)

When calculating TCO, factor in the drive’s capacity density (3.84 TB per U.2 slot), energy efficiency compared to spinning media, lower latency benefits for compute efficiency, and the reduced need for overprovisioning when using enterprise-grade SSDs. The TLC 3D NAND construction offers a competitive price-per-terabyte while still meeting enterprise service-level expectations.

Quick specification snapshot

• Model: Dell 345-BJCK
• Capacity: 3.84 TB
• Interface: PCIe 4.0 NVMe
• Form Factor: U.2 2.5" SFF
• NAND: TLC 3D
• Endurance: 1 DWPD

FAQs (short)

• Is this drive hot-swappable? Yes — when used in a compatible U.2 hot-swap bay.
• Can I use it in non-Dell servers? Physically yes if the chassis supports U.2 NVMe, but verify firmware/driver compatibility with the server vendor.
• Is it suitable for write-intensive workloads? It is tuned for mixed enterprise workloads; for extremely write-heavy applications consider higher DWPD offerings or NVMe drives classified specifically for intensive write endurance.

Dell 345-BJCK Enterprise SSD Overview

The Dell 345-BJCK 3.84 TB PCIe Gen4 NVMe U.2 2.5-inch Small Form Factor (SFF) Solid State Drive is engineered for high-performance enterprise environments, offering exceptional reliability, speed, and endurance. Designed to meet the rigorous demands of modern data centers, this SSD is compatible with Dell PowerEdge servers ranging from the 14th to the 17th generation, ensuring seamless integration and maximum performance.

Key Specifications

• Storage Capacity: 3.84 TB
• Interface: PCIe Gen4 NVMe
• Form Factor: U.2 2.5-inch SFF
• Drive Type: Enterprise Class Read Intensive (RI) SSD
• Endurance: 1 DWPD (Drive Writes Per Day)
• Flash Memory Type: TLC (Triple-Level Cell)
• Compatibility: Dell PowerEdge 14g, 15g, 16g, and 17g servers

Advanced PCIe Gen4 NVMe Performance

The Dell 345-BJCK SSD leverages PCIe Gen4 NVMe technology, providing ultra-low latency and significantly higher throughput compared to traditional SAS or SATA SSDs. With sequential read speeds exceeding 6,500 MB/s and sequential write speeds of up to 3,000 MB/s, this drive ensures rapid access to critical enterprise data, enabling faster boot times, application loading, and database performance.

NVMe Protocol Advantages

NVMe (Non-Volatile Memory Express) is a high-speed storage protocol designed specifically for flash-based storage, unlike legacy AHCI protocols. Key benefits include:

• Reduced latency for faster data retrieval
• High IOPS (Input/Output Operations Per Second) for transactional workloads
• Efficient queue management supporting thousands of simultaneous commands
• Lower CPU overhead compared to traditional storage interfaces

Enterprise-Level Read Intensive Performance

The 345-BJCK SSD is categorized as Read Intensive (RI), optimized for workloads that primarily involve reading large amounts of data rather than frequent writes. This makes it ideal for:

• Database querying and reporting
• Virtual desktop infrastructure (VDI)
• Content delivery networks (CDNs)
• Big data analytics

Workload Optimization

With an endurance rating of 1 DWPD, the SSD guarantees consistent performance under typical enterprise workloads while maintaining data integrity over the drive's lifecycle. Advanced wear-leveling algorithms and error correction ensure reliability and durability.

Small Form Factor (SFF) Design

The 2.5-inch Small Form Factor U.2 design allows for flexible deployment in space-constrained environments while maintaining full enterprise performance. The compact design supports high-density storage configurations without compromising airflow or cooling efficiency, which is critical in rack-mounted servers.

U.2 Interface Benefits

The U.2 interface, formerly known as SFF-8639, combines the high-speed benefits of PCIe NVMe with the hot-swap capabilities of traditional SAS drives. Key features include:

• Hot-swappable drive support for minimal downtime during replacements
• Compatibility with standard 2.5-inch server bays
• Backward compatibility with PCIe Gen3 in environments where Gen4 is not available

Cooling and Reliability Considerations

The SFF U.2 form factor supports enhanced thermal management, including integrated heat sinks and optimized airflow paths. Dell servers are engineered to accommodate these SSDs, ensuring consistent performance even under heavy workloads without thermal throttling.

Compatibility with Dell PowerEdge Servers

The Dell 345-BJCK SSD is fully certified for use with Dell PowerEdge 14g through 17g servers. This includes models such as:

• PowerEdge R640, R740, R740xd, and R940
• PowerEdge T640 and T340
• PowerEdge MX740c in modular deployments

Seamless Integration

Integration with Dell OpenManage and other server management tools allows administrators to monitor drive health, update firmware, and optimize storage performance efficiently. Automatic detection ensures plug-and-play installation with minimal configuration.

Enterprise-Class Reliability

Designed to operate 24/7 in demanding data center environments, the Dell 345-BJCK SSD offers:

• High Mean Time Between Failures (MTBF)
• End-to-end data protection with advanced ECC
• Power-loss protection for critical write operations

Firmware and Security Features

Firmware features include secure erase, firmware self-encryption, and write optimization algorithms. These enhancements safeguard sensitive enterprise data while maintaining consistent performance over the drive's lifecycle.

Storage Capacity and Scalability

With 3.84 TB of storage, the Dell 345-BJCK SSD can handle substantial datasets for high-performance applications. Its capacity is ideal for organizations seeking to consolidate workloads, reduce storage footprint, and improve efficiency.

High-Density Deployment

The SFF U.2 form factor enables high-density storage arrays in 1U, 2U, and 4U rack configurations. Combining multiple 3.84 TB drives allows enterprises to scale storage without compromising performance or reliability.

RAID Configurations

This SSD is compatible with Dell PERC RAID controllers, supporting RAID 0, 1, 5, 6, 10, 50, and 60 configurations. RAID setups enhance data protection, availability, and performance, making them ideal for mission-critical applications.

Future-Proof Storage Infrastructure

Investing in PCIe Gen4 NVMe drives ensures readiness for next-generation applications and workloads. The high bandwidth, low latency, and durability of the Dell 345-BJCK make it a future-proof solution for evolving data center demands.

TLC Flash Technology

The drive utilizes Triple-Level Cell (TLC) NAND flash, offering a balance between cost efficiency, performance, and endurance. TLC flash stores three bits per cell, providing high storage density without sacrificing enterprise-grade reliability.

Endurance and Lifecycle Management

1 DWPD endurance rating ensures reliable write performance for read-intensive workloads. Dell's advanced firmware manages wear leveling and bad block mapping, prolonging the drive's usable life and maintaining consistent performance.

Data Integrity Features

TLC-based enterprise SSDs include advanced error correction codes (ECC) and data path protection, preventing data corruption during read/write operations. Combined with Dell’s power-loss protection, these drives ensure critical data remains secure even during unexpected shutdowns.

Performance Consistency

The Dell 345-BJCK SSD maintains predictable performance under sustained workloads, making it suitable for latency-sensitive applications such as database transactions, virtualization, and analytics.

Enterprise Deployment Considerations

When deploying the Dell 345-BJCK SSD in enterprise environments, several factors ensure optimal performance and reliability:

• Proper thermal management and airflow within server racks
• Firmware updates through Dell OpenManage for consistent performance
• Integration with RAID and storage management solutions
• Regular health monitoring and predictive failure alerts

High Availability and Data Protection

Enterprise deployments benefit from redundant configurations, hot-swappable capabilities, and RAID arrays, minimizing downtime and ensuring continuous access to critical business data.

Virtualization and Cloud Readiness

The SSD is ideal for virtualized environments and private or hybrid cloud infrastructures, supporting high IOPS and low latency requirements essential for multiple virtual machines and containerized applications.

Backup and Recovery Integration

Integration with Dell backup and disaster recovery solutions ensures data resilience, allowing businesses to implement comprehensive data protection strategies without impacting performance.

Comparisons with Other Enterprise SSDs

Compared to traditional SAS or SATA SSDs, the Dell 345-BJCK offers:

• Higher bandwidth and lower latency due to PCIe Gen4 NVMe interface
• Enhanced endurance and reliability for read-intensive workloads
• Better scalability for high-density server environments
• Full integration with Dell PowerEdge management tools

Advantages over Legacy Storage Solutions

Legacy storage drives often struggle with high transactional loads or random read/write patterns. In contrast, the 345-BJCK SSD provides consistent high-speed performance, reduced response times, and improved data center efficiency.

Cost-Benefit Analysis

While PCIe Gen4 NVMe SSDs may have a higher upfront cost compared to SAS or SATA drives, the total cost of ownership is lowered through improved performance, energy efficiency, and reduced downtime in enterprise environments.

Long-Term Investment Value

Organizations investing in Dell 345-BJCK SSDs gain future-ready storage capable of supporting advanced workloads, virtualization, and cloud infrastructure, ensuring maximum return on investment.

Conclusion

The Dell 345-BJCK 3.84 TB PCIe Gen4 NVMe U.2 2.5-inch SFF Enterprise Class Read Intensive SSD is a high-performance, reliable, and scalable storage solution for modern data centers. Combining PCIe Gen4 speed, TLC NAND reliability, 1 DWPD endurance, and seamless Dell PowerEdge compatibility, this SSD is engineered to meet the most demanding enterprise workloads. Whether deployed in virtualization, cloud infrastructure, analytics, or database applications, it delivers unmatched performance and longevity.