HGST 400GB Ultrastar SSD400S.B HUSSL4040BSS601 Data Sheet

Ultrastar

™

 SSD400S.B

•

SLC NAND Flash for ultra-high performance 

and endurance 

•

Best IOPS/Watt for reduced TCO

•

6Gb/s SAS interface for maximum throughput 

•

Advanced Power-loss Data Management 

technology

•

Trusted Computing Group’s (TCG)  

Self-encrypting models designed to 

Enterprise A specification

•

Ultra-high performance tier-0  

enterprise storage

•

Enterprise-class servers and High  

Performance Computing 

•

Space and/or power constrained 

environments

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Online Transaction Processing (OLTP

•

Video pre/post production

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Financial, eCommerce

•

Database Analytics

•

Cloud Computing

HGST leverages decades of proven enterprise storage expertise in Serial Attached SCSI (SAS)

design reliability, firmware, customer qualification and system integration to the new

Ultrastar SSD400S.B solid-state drive (SSD) family. The synergistic relationship between

HGST’s new throughput-enhancing SSDs and traditional HDDs provides cost effective,

end-to-end enterprise-class storage solutions, delivering reliability, compatibility, capacity,

cost and system performance. This combination makes HGST a leading HDD/SSD provider

with the experience and technology needed to meet escalating reliability, endurance, and

performance in the most demanding enterprise environments.

The new Ultrastar SSD400S.B delivers high sequential throughput, up to 536MB/s read and

502MB/s write (6Gb SAS). The Ultrastar SSD400S.B also delivers up to 57,500 read and 25,500

write IOPS, reaching speeds 100 times faster than HDDs, allowing rapid access to “hot” enter-

prise data for improved productivity and operational efficiency. Since less SSDs are required to

achieve the same HDD IOPS performance, the new Ultrastar SSD400S.B family offers signifi-

cant value in terms of IOPS per Watt, while reducing total cost of ownership (TCO) through low

power consumption, efficient cooling and reduced space requirements.
The Ultrastar SSD400S.B family combines enterprise-grade SLC NAND flash memory,

advanced endurance management firmware and power loss data management techniques to

extend reliability, endurance, and sustained performance over the life of the SSD. The Ultrastar

SSD400S.B family achieves an extraordinary 0.44% annual failure rate (AFR) or two million

hour mean-time-between-failure (MTBF). The 400GB capacity Ultrastar SSD endures up to

35 petabytes (PB) of random writes over the life of the drive – the equivalent of writing 19.2

terabytes (TB) per day for five years.
For complete end-to-end data protection and reliability, the Ultrastar SSD400S.B family

incorporates the T10 Data Integrity Field (DIF) standard, extended error correction code (ECC),

Exclusive-OR (XOR) parity to protect against flash die failure, parity-checked internal data

paths without an external write cache, and an exclusive power loss data management feature

that does not require supercapacitors. The Ultrastar SSD400S.B family is backed by a five year

limited warranty, or the maximum petabytes (PB) written (based on capacity).

Features and Benefits

SAS 6Gb/s 
SLC NAND Flash Memory 
536 / 502MB/s Sequential R/W 
57K / 25K IOPS Random R/W

Dual port for enhanced reliability 
Highest write performance and endurance  
Max throughput and IOPs for ultra-fast access to data.  
100x faster than typical HDD

5.5 Watts, typical

Up to 60% less power than 3.5-inch 15K RPM HDD 

400GB, 200GB, 100GB

More capacity for less space and power

0.44% AFR (2M Hours MTBF) 
1E-16 Bit Error Rate (BER) 
T10 End-to-end Data Protection 
Exclusive-OR (XOR) NAND 
Power-loss Data Management 
Unlimited reads, up to 35PB writes

Reduced field replacement effort 
Enhanced error detection and correction for optimal data integrity 
Protection against flash die failure 
Enhances data integrity during power failure 
Maximum endurance over the life of SSD 

HDD architecture commonality 
Global Systems Integration & Test Labs

Compatibility with Ultrastar SAS/FC HDD 
Extensive interoperability and compliance testing

400B, 200GB and 100GB SLC 

2.5-inch SFF | SAS 6Gb/s