Advanced Administrative Procedures
6-7
Compaq Confidential – Need to Know Required
Writer:
Doug Warren
Project:
Compaq TaskSmart N2400 Administration Guide
Comments:
Part Number:
177675-002
File Name:
g-ch6.doc
Last Saved On:
2/12/01 1:56 PM
■
Onboard rechargeable batteries—The array accelerator is backed up
so that data temporarily held there (cached) is safe during equipment
failure or power outage. Backup is particularly important for data that
has been cached by a posted-write but has not yet been written to the
hard drives. The batteries preserve data in the array accelerator for a
minimum of four days.
IMPORTANT:
The rechargeable batteries on a new Smart Array Controller can be
discharged when the board is first installed. During server power-up with discharged
array accelerator batteries, Power-On-Self-Test (POST) displays the code “1794,”
indicating that the array accelerator is disabled. This error message does not require
action. The array accelerator is automatically enabled when batteries are charged to
90 percent of their capacity.
The internal circuitry can take up to 36 hours to fully charge the batteries. During this
time, the array accelerator is disabled, but the Smart Array Controller properly functions,
without the performance advantage of the array accelerator.
Managing Drive Arrays Using ACU
The ACU is an intuitive graphical tool. With configuration wizards, your array
controller is set up and ready to use in minutes. Changing the default
configuration of the TaskSmart N2400 appliance is optional.
Creating Arrays
The ACU provides a wizard-type interface for creating or modifying drive
arrays. Some of the most important features of the ACU include:
■
Graphical representation of drive arrays and physical disks
■
Express or custom configurations
■
Online spare (hot spare) configuration
■
Easy capacity expansion
■
Selectable drive rebuild and array expansion priorities
