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HGST Storage Class Memory
HGST incorporates specialized software and hardware that combine to implement Storage Class
Memory (SCM) within the server. The HGST architecture has been designed to tightly integrate
different kinds of flash media, hardware and software to deliver memory-class performance
with storage-class capacity and persistence. HGST’s FlashMAX® II SCM devices and associated
software deliver performance without compromise, along with HDD-like capacity in a very
compact, universal form factor.
vFAS™
vFAS is an Adaptive Scheduling algorithm, which delivers the most efficient access to flash
media for applications. In addition to providing optimized access for peak performance,
vFAS also includes sophisticated techniques to ensure applications get steady sustained
performance at all times. vFAS virtualizes the underlying flash media to present a standard
block device interface to applications, without inefficient storage protocols or interconnects,
resulting in significant gains in application performance.
FlashMAX II presents a traditional block storage volume to the host so that applications
can easily access it without modification. vFAS has been designed to treat flash media
more like an extension of memory, while maintaining a traditional block storage interface
for applications. All of this is done without the use of storage protocols, storage controllers
or storage interconnects. The result is latencies under 21 μs, which is closer to DRAM
performance.
Unconditional Performance
FlashMAX II with vFAS delivers consistent performance across all application workloads,
even when the device is fully utilized. FlashMAX II with vFAS delivers application
performance whether it is peak small block read performance, where a single low profile
card can deliver over 1.1 million IOPS, or sustained mixed read/write performance when the
drive is full.
Simplified Management
Unlike many competing solutions, 100% of the capacity available on a FlashMAX II card
is available as a single host volume on the server without having to leverage 3rd party
software RAID products to stripe across multiple drives. With FlashMAX II you can have a
single volume presented to the operating system up to the advertised formatted capacity,
which can be as large as 4.8TB when using the FlashMAX II Capacity model.
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