Compaq StorageWorks Fibre Channel Troubleshooting Guide

Introduction 1-7
RA4000 Controller
The RA4000 Controller is a drive array controller designed to be installed in the Compaq
StorageWorks RA4000 and RA4100. The RA4000 Controller supports Fast-SCSI-2, Fast-Wide
SCSI-2, or Wide-Ultra SCSI-3 hot-pluggable hard drives. The RA4000 comes equipped with
one RA4000 Controller installed. A second RA4000 Controller may be added for a redundant
configuration. Refer to the Compaq StorageWorks RAID 4000 User Guide (P/N 340428-001) or
Compaq StorageWorks RAID 4100 User Guide (P/N146297-001) for more information about
configuration.
Transmit
LED
Serial Debug
Port
Receive
LED
GBIC
Receptacle
15 14 13 12 11 10 9 8
76 54 32 10
Figure 1-6. RA4000 Controller
Features
The advanced features supported by the RA4000 Controller include:
■ Support for RAID 0, 1, 4, and 5 fault tolerance options
■ Fibre Channel support for connection to the server
■ Support for Fast-SCSI-2, Fast-Wide SCSI-2, or Wide-Ultra SCSI-3 hot-pluggable hard
drives
■ Online capacity expansion, volume extension, RAID migration, and stripe size migration
■ Removable Array Accelerator—battery-backed, configurable 16-MB or 48-MB
Read/Write Cache with ECC (Error Checking and Correcting) memory, along with a
16-MB Read Cache on the controller board
■ Performance monitoring through Compaq Insight Manager
■ Automatic performance tuning
■ Pre-failure notification on hard drives
■ Array Configuration Utility
■ Read-ahead caching
■ Tagged command queuing
■ Multiple logical drives per drive array