IBM Netfinity ServeRAID-4H Ultra160, User Reference

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Step 1: Installing and cabling a ServeRAID controller
This section provides installation and cabling instructions for the ServeRAID-4H
controller as well as basic information about the standard features of this controller.
If you are using a ServeRAID controller on an IBM Netfinity or PC Server system
board, you will not need the information in this section. Continue with “Step 2:
Updating BIOS and firmware code” on page 21.
Controller features
Standard features of the ServeRAID controller are as follows.
Feature ServeRAID-4H
Arrays (max.) 8
Battery-backup cache Yes
Cache memory 128 MB
Hard disk drives (max.) 60
Logical drives (max.) 8
Microprocessor 266 MHz
SCSI channels 4
SCSI transfer speed (max.) 160 MB per sec.
Supported RAID levels 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00,
10, 1E0, 50
System PCI data bus 64 bit at 33 MHz
Connector locations
This section provides illustrations of the SCSI channel connectors and cable
connectors for the ServeRAID-4H controller.
The light-emitting diodes (LEDs) on the controllers indicate activity on the SCSI
channels and provide diagnostic information for trained service technicians.
ServeRAID-4H controller
The ServeRAID-4H controller has four independent SCSI channel connectors:
Channel 1, Channel 2, Channel 3, and Channel 4. Each of these SCSI channels
supports up to 15 physical devices.
Note: The battery-backup cache protects the data being stored in the ServeRAID
cache memory during a power outage or failure when using the write-back
mode.
Chapter 2. Installing and configuring ServeRAID controllers
15