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8 IBM Netfinity EXP300 - Type 3531 Hardware Maintenance Manual
Locations
Getting started
You can install the EXP300 expansion unit in the following types of enclosures:
• An Electronic Industries Association (EIA) 310 standard rack cabinet
• The IBM Netfinity EXP300 Rack-to-Tower Conversion Kit
• An IBM Netfinity NetBAY enclosure
Amber LED on and green ac power
LED off on power supply
1. Make sure AC power is good at the source.
2. Power Cord
3. Power supply
Green LED on (Drive CRU ID=6) 1. If not currently cluster configured, power cycle the
Netfinity EXP300 to re-enable ID=6.
One or more green LEDs off (one or
two drive CRUs)
( No activity to the drive. No action is required.)
One or more green LEDs off (all
drive CRUs or those on one bus)
( No activity to the drive. No action is required.)
1. Check SCSI-bus cables and connections.
2. Use RAID management software to check the SCSI-bus
status.
3. ESM board
One or more green LEDs off (front
panel)
1. Make sure the cables are plugged in and power supplies
are turned on.
2. Power supply
Intermittent or sporadic power loss
to the expansion unit
1. Check the ac power source
2. Resecure all installed power cables and power supplies
3. Power supply
Unable to access drives on one or
both SCSI buses
1. Make sure SCSI cables are undamaged and properly
connected.
2. Check the drive SCSI ID settings. Ensure that option
switches 1 and 3 (inside the switch card) are set to the
appropriate positions.
Attention:
Change switch positions only when your host server and
expansion unit is turned off.
3. ESM board
4. Bridge card (All high address or all low address hard-
disk drive failed)
Random errors 1. Mid-plane
Problem indicator FRU/Action