Toshiba has made available its HK4 Series, the company's first enterprise SSD to embed 15nm MLC NAND flash memory. The read-intensive HK4R Series is available in capacities up to 1.92TB with low operating power. The value-endurance drive offers an endurance level of three DWPD and a capacity up to 1.6TB. It is suited for data centers and mixed workload applications.

The HK4 Series is also Toshiba's first SATA SSD with optional Trusted Computing Group (TCG) enterprise encryption support and is also equipped with Toshiba's QSBC (Quadruple Swing-By Code2 ) error technology. Toshiba's proprietary QSBC error-correction technology is an efficient error correction code (ECC) which helps protect data from corruption caused by NAND flash memory media wear, thus improving reliability and extending the life of Toshiba SSDs.

Equipped with a five-year limited warranty, the HK4 Series drives are available now. The self-encrypting drives will be available April 2016.

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
Reliability
MTTF	2,000,000 hours
Warranty	5 years
DWPD	1
Power Requirements
Supply Voltage	5.0 V ±5 %
Powe Consumption (Operating)	4.5W Typ.
Powe Consumption (Ready)	1.2 W Typ.
Dimensions
Height	7.0 mm
Width	69.85 mm
Length	100.0 mm
Weight	60 g Max.
Environmental
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)