345-BJRB Dell 7.68TB SAS 24GBPS Read Intensive SFF Enterprise Hot Plug SSD

Dell 345-BJRB 7.68TB Enterprise SSD

The Dell 345-BJRB represents the pinnacle of enterprise storage technology, engineered specifically for mission-critical server environments. This 7.68TB SAS 24Gbps Read-Intensive TLC SSD delivers exceptional performance and reliability for Dell EMC PowerEdge servers across multiple generations. Designed with enterprise-class endurance and data integrity features, this storage solution ensures optimal performance for read-intensive workloads in data centers, cloud infrastructure, and enterprise applications.

Key Specifications and Performance Metrics

Understanding the detailed technical specifications of the Dell 345-BJRB SSD is crucial for proper deployment in enterprise environments. This solid-state drive incorporates cutting-edge storage technology to meet the demanding requirements of modern data centers.

Capacity and Form Factor Details

The Dell 345-BJRB offers a substantial 7.68TB storage capacity, providing ample space for enterprise applications, virtual machines, and large databases. This capacity point is strategically designed to balance storage density with performance characteristics. The drive utilizes the Small Form Factor (SFF) 2.5-inch physical dimension, which is the industry standard for enterprise servers and storage arrays. This form factor enables high storage density in limited rack space while maintaining optimal thermal characteristics for sustained performance.

Capacity Optimization Features

Dell employs advanced capacity optimization technologies including over-provisioning at 28.1% to maintain consistent performance throughout the drive's lifespan. This over-provisioning strategy enhances garbage collection efficiency, wear leveling effectiveness, and overall write amplification factors, contributing to the drive's exceptional endurance rating.

Interface and Protocol Performance

The 345-BJRB utilizes the SAS 24Gbps interface, representing the latest evolution in Serial Attached SCSI technology. This interface delivers significantly higher bandwidth compared to previous SAS 12Gbps generations, enabling maximum performance for enterprise workloads.

SAS 24Gbps Technical Advantages

The SAS 24Gbps interface operates at 22.5 Gigatransfers per second using 128b/150b encoding, providing approximately 2.4GB/s full-duplex bandwidth per port. This high-speed interface eliminates storage bottlenecks in performance-sensitive environments and supports advanced features like dual-port redundancy, multipath I/O, and compatibility with SAS expanders for scalable storage configurations.

Protocol Efficiency

The drive supports the SCSI T-10 command set with command queuing depth of up to 640 commands, enabling efficient processing of simultaneous I/O requests. Advanced protocol features include Task Management Functions, Priority Commands, and Protection Information (PI) capabilities for enhanced data integrity throughout the storage stack.

Endurance and Reliability

Enterprise SSDs require exceptional endurance characteristics to withstand continuous operation in demanding environments. The Dell 345-BJRB is engineered with comprehensive reliability features that ensure data integrity and sustained performance.

Workload Suitability Analysis

The 1DWPD rating positions this SSD optimally for read-centric workloads including database query operations, web serving, virtual desktop infrastructure (VDI) boot images, and content delivery networks. The balanced endurance ensures reliable performance for mixed workloads with read-to-write ratios typically ranging from 70:30 to 90:10.

TLC NAND Technology with Enterprise Enhancements

Unlike consumer-grade TLC flash, the enterprise-class TLC NAND in the 345-BJRB incorporates specialized enhancements for durability and performance consistency. The triple-level cell architecture provides an optimal balance between storage density, cost efficiency, and endurance for read-intensive applications.

Advanced Wear Leveling Algorithms

The drive implements sophisticated wear leveling across all NAND blocks, distributing write operations evenly to prevent premature wear on specific memory cells. This dynamic and static wear leveling strategy extends the drive's operational lifespan beyond the specified endurance rating under normal operating conditions.

Performance Characteristics and Benchmark Metrics

The performance profile of the Dell 345-BJRB SSD is optimized for enterprise read-intensive applications, delivering consistent low latency and high throughput under various workload conditions.

Sequential Performance Capabilities

For sequential operations, the drive achieves up to 4,000 MB/s read bandwidth and 2,100 MB/s write bandwidth under sustained transfer conditions. This performance level enables rapid data access for large file operations, backup processes, and data migration tasks.

Sustained Write Performance

The drive maintains consistent write performance even during extended sequential write operations, thanks to the sophisticated write acceleration technology and large dynamic SLC cache. The sustained write speed remains above 1,800 MB/s even after cache exhaustion, ensuring predictable performance during intensive operations.

Random I/O Performance Specifications

Random performance metrics are critical for enterprise applications involving database transactions and virtualized environments. The 345-BJRB delivers up to 430,000 random read IOPS and 70,000 random write IOPS at queue depth 256, providing responsive performance for concurrent access patterns.

Latency Characteristics

The drive exhibits exceptional low latency with read operations typically completing within 85 microseconds and write operations within 15 microseconds under normal load conditions. This predictable low latency ensures consistent application response times and meets service level agreement requirements for enterprise deployments.

NAND Flash Memory

The drive utilizes latest-generation 3D TLC NAND flash memory arranged in multiple parallel channels to maximize bandwidth and reliability. The 3D NAND structure provides enhanced endurance and lower power consumption compared to planar NAND technologies.

Error Correction and Data Integrity

Advanced LDPC (Low-Density Parity Check) error correction combined with sophisticated RAID-like protection within the NAND array ensures data integrity even as the NAND cells age. The multi-level ECC strategy can correct multiple bit errors per page while maintaining high performance.

Power Management and Environmental Specifications

Enterprise storage solutions must operate efficiently within the power and thermal constraints of data center environments. The Dell 345-BJRB incorporates comprehensive power management features.

Power Consumption Profiles

The drive operates with typical active power consumption of 8-12 watts during mixed workloads, with peak power not exceeding 14 watts during maximum performance operations. During idle states, power consumption drops to approximately 5 watts, contributing to overall data center power efficiency.

Power Loss Protection Implementation

Enterprise-grade power loss protection circuits include multiple tantalum capacitors that provide sufficient hold-up energy to complete in-flight writes and commit all data from volatile cache to non-volatile memory during unexpected power failure events. This feature ensures data integrity across power cycle events.

Dell EMC PowerEdge Server Compatibility

The drive is fully compatible and certified for Dell EMC PowerEdge 14th, 15th, and 16th generation servers, including the R740xd, R750xa, R760, and similar models. This compatibility ensures optimal performance, management integration, and firmware compatibility across the server ecosystem.

Storage Array and RAID Compatibility

Beyond standalone server deployment, the 345-BJRB is compatible with Dell EMC storage arrays and supports various RAID configurations. The drive's TLER (Time Limited Error Recovery) functionality prevents RAID synchronization issues by limiting error recovery time to prevent RAID controller timeouts.

Multi-Path I/O and High Availability Features

The dual-port SAS interface enables true active-active multipath I/O configurations for high availability deployments. This capability allows simultaneous access through multiple host connections, providing both redundancy and increased bandwidth in properly configured environments.

Data Security and Protection Mechanisms

Enterprise data protection requires comprehensive security features at the hardware level. The Dell 345-BJRB incorporates multiple layers of data protection and security capabilities.

End-to-End Data Protection

The drive implements comprehensive end-to-end data protection with protection information (PI) stored alongside user data. This architecture detects and corrects data corruption that might occur during transfer between the host interface, DRAM buffer, and NAND flash memory.

Secure Erase and Sanitization

For data security during decommissioning or repurposing, the drive supports multiple sanitization methods including cryptographic erase and block erase commands. These features ensure complete data destruction following NIST guidelines for media sanitization.