HP 353803-B22 - StorageWorks Modular Smart Array 1000 SAN Starter Manuel de référence - Page 21

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This also applies if the Array Accelerator is removed from the MSA1000

Controller. When power is restored to the MSA1000 storage system, an

initialization process writes the preserved data to the disk drives. This is

particularly important for data that has been cached by a posted-write operation,

but has not yet been written to the hard drives.

Note:

board is first installed. In this case, a Power-On Self-Test (POST) message will be

displayed on the controller display panel when the controller is powered on, indicating

that the Array Accelerator is temporarily disabled. No action is required on your part,

since the internal circuitry will automatically recharge the batteries. Recharging the

batteries can take up to 4 hours. The MSA1000 Controller will function properly during

this time, although without the performance advantage of the Array Accelerator. When

the batteries are charged to 90 percent of their capacity, the Array Accelerator is

automatically enabled.

Depending on the status of the array accelerator, including a low battery charge,

informational or error messages may be displayed on the controller's LCD panel.

For a listing of cache module LCD messages, see the definitions in the HP

StorageWorks 1000 Modular Smart Array Maintenance and Service Guide.

Array Configuration Overview

Drive array technology distributes data across a series of individual hard drives to

unite these physical drives into one or more higher-performance logical arrays and

volumes. Distributing the data allows for concurrent access from multiple drives

in the array, yielding faster I/O rates than non-arrayed drives. Each logical drive in

the array can be set to a different level of fault tolerance.

Depending on your server's operating system and your preference of user

interfaces, use one of the following provided user interfaces to configure the

storage on the MSA1000:

■

For information about these user interfaces, see

HP StorageWorks 1000 Modular Smart Array Reference Guide

The batteries on a new MSA1000 Controller may be discharged when the

Array Configuration Utility (ACU)

Command Line Interface (CLI)

MSA1000 Hardware Components

"MSA1000 Software

Tools".