IBM 704 User Manual
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CD-ROM Drive In-Use Light:
This light indicates CD-ROM
drive activity. When this light is green, power is being applied
to the drive. When this light is amber, the drive is being
accessed (read from or written to).
Diskette Drive In-Use Light:
This green light indicates
diskette-drive activity.
Power-On Light:
This green light indicates that the power-on
button is in the on position.
Power-Failure Light:
This amber light indicates there is no
alternating current (AC) present.
Cooling-Failure Light:
This amber light indicates a fan failure.
Drive-Failure Light:
This amber light indicates a drive failure.
Information Panel:
System monitoring information will appear
on this liquid crystal display (LCD) if you install a
system-management program and enable the information panel
using the System Configuration Utility (SCU) program.
Hard Disk Status Lights:
Each of the 12 hot-swap drive bays
has a set of three status lights. These status lights indicate the
following:
Hard Disk Fault Light:
When lit continuously, this amber
light indicates a faulty hard disk drive.
Hard Disk In-Use Light:
When flashing, this green light
indicates that the server is writing to or reading from the
hard disk. However, on disk-array models, this light is
operating-system dependent.
Hard Disk Power-On Light:
When lit continuously, this
green light indicates that a drive is installed and power is
present.
Chapter 1. Introducing the PC Server 704
9