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Data Center SSD

Enterprise Read Intensive SSD

( HK4R Series (Non-SED))

HK4 Click to enlarge

Designed for read-intensive workloads, the enterprise HK4R SATA SSD series offers excellent performance, high reliability and low power consumption with high quality of service, especially for enterprise and file server use.

The HK4R family supports 6.0 Gbit/s interface and is available in large capacities up to 1.92TB. All 7.0mm height models are equipped with enterprise-grade features such as Power Loss Protection.

Key Features
  • Capacities up to 1.92TB
  • 1DWPD
  • SATA 6.0 Gbit/s Iterface
  • Low Operating Power
  • Power Loss Protection
  • End to end data protection
  • Hot-Plug/OS-Aware Hot Removal
  • Web Servers
  • File Server
  • Media Streaming
  • VOD
  • Search Engine
  • Warm Data Storage


Basic Specifications
Interface ACS-3, SATA revision 3.2
Interface Speed 6.0 Gbit/s , 3.0 Gbit/s , 1.5 Gbit/s
Memory Type MLC
Formatted Capacity 120 GB 240 GB 480 GB 960 GB 1920 GB
Sequential Read (64KiB) 500 MiB/s
Sequential Write (64KiB) 120 MiB/s 270 MiB/s 480 MiB/s
Random Read (4KiB) 75 KIOPS
Random Write (4KiB) 4 KIOPS 10 KIOPS 12 KIOPS 14 KIOPS
MTTF 2,000,000 hours
Warranty 5 years
Power Requirements
Supply Voltage 5.0 V ±5 %
Power Consumption (Operating) 4.5W Typ.
Power Consumption (Ready) 1.2 W Typ.
Height 7.0 mm
Width 69.85 mm
Length 100.0 mm
Weight 60 g Max.
Temperature (Operating) 0 to 55° C
Relative Humidity (Operating) 5 to 95 % R.H.
Vibration (Operating) 21 m/s2 { 2.17 Grms } ( 100 to 800 Hz )
Shock  (Operating) 9.8 km/s2 { 1000 G } ( 0.5 msec )
More Features
  • Support to power loss protection  (PLP)
  • Product image may represent a design model.
  • Definition of capacity: Toshiba defines a megabyte (MB) as 1,000,000 bytes, a gigabyte (GB) as 1,000,000,000 bytes and a terabyte (TB) as 1,000,000,000,000 bytes.  A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1GB = 230 = 1,073,741,824 bytes and therefore shows less storage capacity.  Available storage capacity (including examples of various media files) will vary based on file size, formatting, settings, software and operating system, such as Microsoft Operating System and/or pre-installed software applications, or media content.  Actual formatted capacity may vary.
  • A kibibyte (KiB) means 210, or 1,024 bytes, a mebibyte (MiB) means 220, or 1,048,576 bytes, and a gibibyte (GiB) means 230, or 1,073,741,824 bytes.
  • MTTF (Mean Time to Failure) is not a guarantee or estimate of product life; it is a statistical value related to mean failure rates for a large number of products which may not accurately reflect actual operation.  Actual operating life of the product may be different from the MTTF.
  • DWPD: Drive Write Per Day. One full drive write per day means the drive can be written and re-written to full capacity once a day every day for five years, the stated product warranty period. Actual results may vary due to system configuration, usage and other factors.
  • Read and write speed may vary depending on the host device, read and write conditions, and file size.
  • IOPS: Input Output Per Second (or the number of I/O operations per second)
  • PLP (Power Loss Protection): PLP supports to record data in buffer memory to NAND flash memory, utilizing back up power of solid capacitor in case of sudden supply shut down.


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