HP PCIe IO Accelerators for ProLiant Servers - Manual (Page 8)

Introduction 8
Introduction
Overview
Designed around ioMemory, a revolutionary storage architecture, HP PCIe IO Accelerator is an advanced
NAND flash storage device. With performance comparable to DRAM and storage capacity on par with
hard disks, PCIe IO Accelerator increases performance so that every server can contain internal storage
that exceeds the I/O performance of an enterprise SAN.
PCIe IO Accelerator is the first data accelerator designed specifically to improve the bandwidth for I/O-
bound applications.
In addition to the hardware driver, the IO Accelerator also includes a VSL. This hybrid of the RAM
virtualization subsystem and the disk I/O subsystem combines the best features of both systems. VSL
functions as a disk to interface well with block-based applications and software while also running like
RAM underneath to maximize performance. This produces the following benefits:
• Performance: The VSL offers direct and parallel access to multiple CPU cores, enabling near linear
performance scaling, consistent performance across different read/write workloads, and low latency
with minimal interruptions and context switching.
• Extensibility: The VSL enables flash-optimized software development, making each IO Accelerator
module a flexible building block for creating a flash-optimized data center.
Performance attributes
IO Accelerator capacity 160GB 320GB
NAND type Single level cell (SLC) Multi-level cell (MLC)
Read bandwidth 770 MB/s (64K packet size) 735 MB/s (64K packet size)
Write bandwidth 750 MB/s (64K packet size) 510 MB/s (64K packet size)
IOPS* 140,000 (512B read packet
size)
123,000 (75/25 r/w mix
512B
packet size) 100,000 (512B read packet size)
67,000 (75/25 r/w mix 512B
packet size)
Access latency 26 μs (read) 29 μs (read)
IO Accelerator Duo
capacity
320GB 640GB
NAND type Single level cell (SLC) Multi-level cell (MLC)
Read bandwidth 1.5 GB/s (64K packet size) 1.0 GB/s (64K packet size)
Write bandwidth 1.5 GB/s (64K packet size) 1.5 GB/s (64K packet size)
IOPS* 261,000 (512B read packet
size)
238,000 (75/25 r/w mix
196,000 (512B read packet size)
138,000 (75/25 r/w mix 512B