Hp PCIe IO Accelerators for ProLiant Servers Bedienungsanleitung PDF herunterladen (Seite 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

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