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Type 3526 Fibre Channel RAID
Controller
General Checkout
Use the status LEDs, Symptom-to-FRU list, and the
connected server HMM to diagnose problems.
Using the Status LEDs
The LEDs of the control unit indicate the hardware status:
Green LED indicate normal operation
Amber LED indicates a hardware problem
The LEDs on the controller unit indicate the status of the
controller unit and its individual components. The green
LEDs indicate a normal operating status; amber LEDs
indicate a hardware fault. Check all of the LEDs on the
front and back of the controller unit when it is powered on.
Notes
If power was just applied to the controller unit,
the green and amber LEDs might turn on and off
intermittently. Wait until the controller unit
finishes powering up before you begin checking
for faults.
To view the controller Customer Replaceable Unit
(CRU) LEDs, the front cover must be removed
from the controller unit. See “Front Cover
Removal” on page 38.
Also use LEDs on the front cover, controller CRUs, and
drive units (if applicable) to determine if the controllers and
drives are responding to I/O transmissions from the host.
The list below describes LED activities:
If a Fast Write Cache operation or other I/O activity is
in progress to the controller unit (or attached drive
units), you might see several green LEDs blinking,
including: the Fast Write Cache LED (on the front
cover), controller CRU status LEDs, or applicable
drive activity LEDs.
The green Heartbeat LEDs on the controller CRUs
blink continuously. The number and pattern of green
status LEDs lit on the controllers depend on how the
system is configured. An active controller will not
have the same status LEDs lit as a passive controller.
See “Controller CRU and Battery LEDs” on page 41.
Copyright IBM Corp. 1998
31
Summary of Contents for Netfinity Series
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Page 28: ...Parts Listing Type 3523 Fibre Channel Hub GBIC 1 2 3 4 18 IBM Netfinity Fibre Channel HMM...
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Page 70: ...Notice n 1 60 IBM Netfinity Fibre Channel HMM...
Page 74: ...Declaraci n 1 64 IBM Netfinity Fibre Channel HMM...
Page 84: ...IBM Part Number 10L9845 Printed in U S A S1 L 9845...