HP 201723-B21 - HP StorageWorks Modular SAN Array 1000 Hard Drive Manuale di riferimento - Pagina 19

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For more information about the MSA1000 Controller display, see the HP

StorageWorks 1000 Modular Smart Array Maintenance and Service Guide.

Array Accelerator (Battery-backed Cache)

The Array Accelerator is a high-performance, upgradeable 256-MB SDRAM

DIMM read/write battery-backed cache that can increase performance in database

and fault-tolerant configurations. It performs both protected posted-write caching

and read-ahead caching, allowing data to be accessed much faster than from disk

storage.

In protected posted-write caching, data is written to the cache memory on the

Array Accelerator rather than directly to the drives. Later, when the MSA1000

storage system is idle, the controller writes the cached data to the drive array.

HP StorageWorks 1000 Modular Smart Array Reference Guide

Controller Display

MSA1000 Hardware Components

Description

Fault indicator (amber)

Display

Left push button

Up push button

Right push button

Down push button

Redundancy Link indicator (green)