by Lyle Smith

Toshiba HK3R 2.5-Inch Enterprise SSD Announced

Toshiba America has announced the HK3R, an enterprise SSD with 2.5-inch form factor and a 6Gb/s SATA interface integrated with Toshiba 19nm NAND flash for high-quality performance and reliability. The HK3R eSSD is optimized for read-intensive applications including read-caching, error logging, boot, and low-duty storage applications that require power-loss-protection as well as end-to-end data protection features. Additionally, it comes in capacities of 120GB, 240GB, and 480GB, which boast sequential read speeds of 500MB/s. Toshiba's new eSSD also supports one full drive write per day with a one hundred percent random data, aligned 4KB workload.

The HK3R eSSD also features Toshiba's proprietary Quadruple Swing-By Code error-correction technology, which is a highly efficient error correction code that ensures customer data is safe and accessible. The HK3R eSSD delivers enterprise-class reliability and consistent, sustained high-performance over the life of the product and ships with a 5-year limited warranty.


  • Capacities: 
    • THNSNJ480PCS3 (480GB)
    • THNSNJ240PCS3 (240GB)
    • THNSNJ120PCS3 (120GB)
  • NAND:  19nm MLC
  • Interface: SATA-3.0 (6.0Gb/s, 3.0Gb/s, 1.5Gb/s)
  • 2.5-inch Form Factor: 7.0 mm, +0, -0.5 mm
  • Performance
    • Sequential Read 64KiB: 500MiB/s
    • Sequential Write 64KiB:
      • 400 MiB/s (240GB, 480GB)
      • 280 MiB/s (120GB)
    • Random Read 4KiB: 75,000 IOPS
    • Random Write 4KiB:
      • 12,000 IOPS (120GB)
      • 10,000 IOPS (240GB, 480GB)
    • Power consumption Ready (Idle A): 1.0 W Typ.
    • Power consumption efficiency: 75,000 IOPS/W
    • MTTF: 2,000,000 hours
    • Product Life: 5 years
  • Temperature
    • Operating: 0 to 55℃
    • Non-Operating: -40 to 70℃
  • Vibration/Shock:
    • Vibration (Operating): 21.27 m/s2 {2.17Grms} (5 to 800Hz)
    • Vibration (Non-operating): 159.74 m/s2 {16.3Grms} (20 to 2000Hz)
    • Shock (Operating): 9,800 m/s2 {1,000G} / 0.5 ms duration
    • Shock (Non-operating): 9,800 m/s2 {1,000G} / 0.5 ms duration


The HK3R eSSDs are available in 120GB, 240 GB, and 480GB capacities. Customer samples will begin shipping this month.

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