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21020690 B 6500 Disk Array User’s Guide
Chapter 1 Description
Page 1 - 6 Primary Components
Primary
Components
The “Primary Components” diagram on page 1-7 illustrates the 6500 disk array
primary components described below.
Enclosure
The standard 6500 enclosure consists of a front cover and an enclosure cabinet,
built in a desktop configuration. (An optional rack-mounting kit is available.)
Air Filter
An air filter is located between the disk drives and the front of the enclosure.
It must be periodically cleaned to ensure proper air flow.
Controller
Board
The controller board is designed with a multiple local bus architecture. A master
microprocessor commands the board's main processor bus and manages its
operations, including command optimization and processing, failed drive
processing, and high-level drive operations. The master processor
communicates with each drive via an ATA controller circuit. Communications
between the master processor and each drive occur on separate but identical
drive channels.
Display/
Operation
Panel
The operator interface includes a two-line 32-character LCD display and six
control switches.
Disk Drives
9 ATA disk drives (8 data, one parity).
Fans and
Temperature
Sensor
Two fans cool the array. A sensor mounted on the array’s controller board
monitors the temperature inside the enclosure, and triggers an audio alarm if
the temperature rises above the normal operating range. If excessive heat is
detected (critical over-temperature), the array will shut down the drives.
Power Supply
The array’s power supply is switch-selectable for 115 or 230 VAC operation.
A male connector attaches to the power source.
Caution Do not use female power connector.