Product Technical Specification Sheet

1. Product Identification

• Brand Name: Toshiba / Kioxia (Note: Toshiba Memory rebranded as Kioxia)

• Product Series: PX05SR Series (v4 Enterprise SAS Family)

• Model Number: PX05SRB096

• Product Segment: Read-Intensive (RI) / Value Endurance Enterprise SSD

• Target Applications: Web servers, Content Delivery Networks (CDN), video streaming platforms, data warehousing, cloud computing infrastructure, and read-heavy virtualization layers.

2. Core Architectural Specifications

• Form Factor: 2.5-inch Small Form Factor (SFF)

• Drive Z-Height Profile: 7.0 mm (Low-profile slim configuration, universally fits inside 7mm and 15mm slots)

• Formatted Capacity: 960 GB

• Interface Protocol: Dual-Port Serial Attached SCSI-3 (SAS 12Gb/s)

• Interface Link Speed: 12.0 Gbps (Backward compatible with 6.0 Gbps and 3.0 Gbps SAS host buses)

• NAND Flash Technology: 19nm Enterprise Multi-Level Cell (eMLC)

• Sector Architecture: 512n (Native 512-byte block format) or 512e/4Kn selectable via format options.

3. Performance & Throughput Profiles

Optimized with Toshiba’s advanced controller microcode to deliver sustained steady-state performance and low latency across concurrent queues:

Performance Metric	Rated Specification
Sustained Sequential Read (128KB)	Up to 1,900 MB/s (1,811 MiB/s)
Sustained Sequential Write (128KB)	Up to 850 MB/s (810 MiB/s)
Random Read IOPS (4KB, Steady State)	Up to 270,000 IOPS
Random Write IOPS (4KB, Steady State)	Up to 50,000 IOPS
Product Latency (Read / Write Typical)	115 µs / 30 µs

4. Endurance, Reliability & Data Protection

Enterprise-Grade Endurance

• Workload Classification: Read-Intensive (RI)

• Drive Writes Per Day (DWPD): 1.0 DWPD (Calculated under full random workload across a 5-year deployment cycle)

• Total Bytes Written (TBW): ~1,752 TBW

Integrity & Safety Features

• MTBF (Mean Time Between Failures): 2,000,000 Hours

• UBER (Uncorrectable Bit Error Rate): Less than 1 sector error per $10^{17}$ bits read

• Dual-Port High Availability: Active-active dual-port connectivity offers multi-path redundancy down to the server backplane, protecting against a single path or controller failover.

• Power Loss Protection (PLP): Integrated hardware-based power-loss protection circuit safeguards data in flight. It utilizes physical capacitors to flush data from volatile cache arrays safely to non-volatile NAND cell blocks if unexpected power termination occurs.

• QSBC™ Error Correction: Features Toshiba’s proprietary Quadruple Swing-By Code (QSBC) for highly effective error correction, shielding the drive against silent bit corruption.

5. Physical, Electrical & Environmental Parameters

Dimensions & Weights

• Physical Profile: 7.0 mm (Height) x 69.85 mm (Width) x 100.45 mm (Depth)

• Net Weight: ~90 g maximum (Drive mechanism alone)

Electrical Load Profiles

• Operating Input Voltage: Dual Rail inputs ($+5\text{VDC} \pm 5\%$ and $+12\text{VDC} \pm 5\%$)

• Active Operating Power (Typical Max): ~7.0 Watts

• Idle State Power Consumption: ~3.2 Watts

Environmental Operating Limits

• Operating Ambient Temperature: 0°C to 55°C (32°F to 131°F)

• Non-Operating Storage Range: -40°C to 70°C

• Operating Shock Limit: 1,000 G for 0.5 ms

• Operating Vibration Limit: 2.16 G RMS (5 Hz to 800 Hz)