Kioxia SDF1B85DAB91T CD7-R 1.92TB Nvme PCIe Gen4 Read Intensive 2.5inch SSD

Compact, High-Speed PCIe® 4.0 NVMe™ Drives

Experience top-tier storage performance in a compact 2.5-inch form with advanced PCIe® Gen4 x4 interface and NVMe™ 1.4 support, delivering rapid data access and transfer speeds.

Manufacturer Details

• Brand: Kioxia
• Part Number: SDF1B85DAB91T
• Product: Internal Solid State Drives (SSD)

Form Factor & Design Attributes

• Drive Dimensions: 2.5-inch chassis with 15mm height profile
• Physical Interface: PCIe® Generation 4 x4, optimized for fast throughput
• Data Protocol: NVMe™ version 1.4, ensuring efficient communication
• Signal Rate: Up to 64 GT/s, maximizing bandwidth potential
• Memory Technology: Equipped with BICS Flash™ 3D TLC NAND

Exceptional Storage Capacity & Speed Benchmarks

Powerful Storage Capabilities

• Total Usable Space: 1.92 Terabytes (1,920 GB)

Sequential Performance Ratings

• Read Speed (128KiB): Up to 6,650 MB/s sustained throughput
• Write Speed (128KiB): Capable of 3,600 MB/s in continuous transfer

Random I/O Efficiency

• Random Read Operations (4KiB): Peaks at 1.1 million IOPS
• Random Write Operations (4KiB): Up to 180,000 IOPS

Durability and Long-Term Reliability

Endurance Metrics

• Drive Writes Per Day (DWPD): 1 DWPD ensures solid daily performance

Reliability Standards

• Mean Time To Failure (MTTF): Rated at 2.5 million hours

Device Measurements & Structural Specs

• Thickness Tolerance: 15 mm (+0 / -0.5 mm)
• Width Range: 69.85 mm ± 0.25 mm
• Maximum Length: 100.45 mm
• Weight Limit: No more than 130 grams

Engineered for Performance-Driven Applications

This SSD is ideal for demanding environments where speed, capacity, and dependability converge, such as high-load servers, workstations, or enterprise storage solutions.

Kioxia CD7-R Series NVMe PCIe Gen4 SSDs

The Kioxia CD7-R Series represents the next generation of enterprise-grade storage solutions, delivering robust performance, endurance, and power efficiency. Optimized for read-intensive workloads, the SDF1B85DAB91T Kioxia CD7-R 1.92TB NVMe PCIe Gen4 SSD offers exceptional value and reliability in mission-critical environments. Designed with cutting-edge BICS Flash™ 3D TLC technology and built for PCIe Gen4 x4 NVMe 1.4 interfaces, this SSD fits into a compact 2.5-inch U.3 form factor, enabling high-density deployment for scalable data centers.

Understanding Read-Intensive Enterprise SSDs

Read-intensive SSDs are engineered to support workloads that primarily access data rather than writing or rewriting it frequently. The SDF1B85DAB91T is ideal for applications such as media streaming, content delivery networks (CDNs), cloud computing, and big data analytics. These environments require fast data access speeds and reliable read throughput, which the CD7-R delivers with low latency and high IOPS performance.

Benefits of Read-Intensive NVMe Drives

• Lower total cost of ownership (TCO) due to reduced write endurance requirements
• High read performance suitable for database querying and analytics
• Power efficiency optimized for data centers with thermal and energy constraints
• Greater storage density within standard U.3 2.5-inch drive slots

Key Technical Specifications of SDF1B85DAB91T

The SDF1B85DAB91T model in the Kioxia CD7-R lineup offers a storage capacity of 1.92TB and is designed for high-speed performance on PCIe Gen4 x4 lanes. This drive utilizes the NVMe 1.4 protocol, enabling lower latency and improved queue management compared to legacy SAS/SATA interfaces.

Core Features

• Interface: PCIe Gen4 x4
• Form Factor: 2.5-inch U.3
• Protocol: NVMe 1.4
• Flash Type: BICS Flash 3D TLC NAND
• Capacity: 1.92 Terabytes
• Performance: Optimized for high read throughput with low latency

PCIe Gen4 NVMe Is a Game-Changer

PCIe Gen4 offers double the bandwidth of Gen3, providing data rates of up to 64GB/s in a 16-lane configuration. Even in a x4 lane setup like the CD7-R, this translates to significant performance improvements in comparison to older PCIe Gen3 drives. Applications benefit from faster data ingestion, rapid access to large data sets, and seamless scalability across data infrastructures.

Advanced NAND Technology: BICS Flash 3D TLC

At the heart of the CD7-R SSD is Kioxia’s proprietary BiCS Flash™, a 3D triple-level cell (TLC) NAND architecture. This advanced NAND technology stacks memory cells vertically to improve storage density and performance while reducing the footprint of each die.

BiCS Flash Advantages

• Increased endurance and reliability in enterprise environments
• Improved error correction capabilities
• Lower power consumption per GB
• Higher storage capacity in a smaller form factor

3D TLC vs. QLC and MLC

Compared to QLC (quad-level cell) flash, TLC (triple-level cell) offers better endurance and faster performance, making it more suitable for read-intensive enterprise applications. While MLC (multi-level cell) can offer slightly better durability, TLC provides a more balanced cost-to-performance ratio and higher density.

U.3 Form Factor and Hot-Swap Capability

The 2.5-inch U.3 interface standard ensures backward compatibility with U.2 and SAS systems, enhancing the CD7-R’s versatility in mixed-infrastructure environments. This makes it easier for organizations to transition from older SAS/SATA drives to modern NVMe solutions without major overhauls.

Benefits of the 2.5-Inch U.3 Interface

• Interoperability with existing U.2 backplanes
• Hot-swap support for easy maintenance and drive replacement
• High-density deployment in servers and storage arrays
• Thermal optimization for enterprise-grade workloads

Security and Data Integrity

The CD7-R series prioritizes enterprise-grade data protection. Features such as power-loss protection, end-to-end data path protection, and optional support for TCG Opal and Sanitize commands help ensure the integrity and security of mission-critical data.

Key Security Features

• End-to-end data protection to reduce silent data corruption
• Secure erase and sanitize commands for compliance
• Support for AES 256-bit encryption (select models)
• Firmware update capabilities via secure channels

Use Cases and Applications

The SDF1B85DAB91T Kioxia CD7-R is optimized for environments that require fast data access with high throughput but moderate write activity. Ideal use cases include:

Cloud Storage and Hyperscale Data Centers

Read-intensive NVMe SSDs like the CD7-R provide the backbone for cloud-native architectures. With large volumes of data accessed by millions of users, these drives deliver consistent latency and high bandwidth.

Big Data and Real-Time Analytics

In analytics platforms where read access dominates, the 1.92TB CD7-R accelerates query performance and reduces bottlenecks for tools like Hadoop, Spark, and Presto.

Media Streaming Platforms

Streaming services require consistent throughput to serve large media files to end users with minimal buffering. The CD7-R enables rapid read access to multimedia content, ensuring a smooth user experience.

Virtualization and VDI

Virtual desktop infrastructure (VDI) solutions benefit from fast boot times and reduced latency. The CD7-R supports hundreds of VDI instances with reliable data access performance.

Energy Efficiency and Thermal Management

The CD7-R series is designed with energy efficiency in mind. It consumes less power per IOPS compared to previous generations, resulting in lower cooling requirements and operational costs.

Thermal Design

• Optimal thermal dissipation for sustained performance
• Support for dynamic thermal throttling
• Minimized need for active cooling in dense deployments

Comparing CD7-R With Other Enterprise NVMe SSDs

While the CD7-R is tailored for read-intensive tasks, it offers a competitive edge over similar enterprise NVMe SSDs in the same category. Compared to other SSDs with similar capacities, the CD7-R features superior read latency, better power efficiency, and optimized firmware for consistent performance across workloads.

Deployment Scenarios and Scalability

Enterprises scaling their infrastructure benefit from the hot-swappable, standard-sized U.3 form factor and consistent performance of the CD7-R. Whether deploying in single-server environments or massive scale-out clusters, the CD7-R integrates seamlessly with existing management tools and platform ecosystems.

Scalable Deployment Examples

• High-performance computing (HPC) clusters
• Web-scale applications and content caching
• Database warehousing and business intelligence
• Edge computing solutions in low-latency environments