iv RAID Array 3000 Controller Shelf Hardware User's Guide
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Controller Shelf Hardware User's Guide Comments:
Part Number: EK-SMCPQ-UG. D01 File Name: a-frnt.doc Last Saved On: 12/7/00 12:19 PM
Chapter 2
RAID Array 3000 Controller
Controller Overview ............................................................................................2-1
Controller Features ..............................................................................................2-3
Controller Reset and LED Indicators....................................................................2-5
Flexible RAID Set Configuration .........................................................................2-6
Custom Components .....................................................................................2-7
Efficient Write and Read Algorithms.............................................................2-7
RAID Levels Supported .......................................................................................2-9
RAID 0....................................................................................................... 2-10
RAID 1....................................................................................................... 2-11
RAID 0+1................................................................................................... 2-12
RAID 4....................................................................................................... 2-14
RAID 5....................................................................................................... 2-16
JBOD ......................................................................................................... 2-17
Redundant Operation ......................................................................................... 2-17
Initialization ............................................................................................... 2-18
Message Passing ......................................................................................... 2-18
Failover ...................................................................................................... 2-18
Environmental ................................................................................................... 2-19
Backup Power Management ........................................................................ 2-19
Chapter 3
Installation and Maintenance
Installation Guidelines .........................................................................................3-1
Installing Shelves in the Cabinet ..........................................................................3-2
Installing Shelf Supports ...............................................................................3-7
Installing UPS Brackets .............................................................................. 3-10
Power and SCSI Cable Connection Procedures................................................... 3-14
SCSI Bus Target Addresses and Termination............................................... 3-15
Cabling a Single Device Expansion Shelf Subsystem................................... 3-16
Cabling a Two Device Expansion Shelf Subsystem ..................................... 3-19
Cabling a Three Device Expansion Shelf Subsystem.................................... 3-21
Cabling a Four Device Expansion Shelf Subsystem ..................................... 3-23
Controller Shelf Status LED’s ............................................................................ 3-27
Controller Status LEDs ...................................................................................... 3-28
Replacing Field Replaceable Units (FRUs)......................................................... 3-28
Replacing a Host or Device I/O SBB ........................................................... 3-30
Replacing a Power Supply SBB .................................................................. 3-31
Replacing the RAID Controller ................................................................... 3-32
Replacing the UPS ...................................................................................... 3-33
Replacing a Blower..................................................................................... 3-33
Replacing the Controller Memory Cache Modules....................................... 3-35