Specifications
Table Of Contents
- SGI™ 1400 Server Family Maintenance and Upgrades Guide
- List of Figures
- List of Tables
- About This Guide
- Working Inside the System
- Tools and Supplies Needed
- Safety: Before You Remove the Access Cover
- Warnings and Cautions
- Removing the System Access Cover
- Installing the Access Cover
- Working in the Subchassis and Electronics Bay
- Installing PCI Boards
- Removing a PCI option Board
- Removing the Front Panel Board
- Installing the Front Panel Board
- Removing the Diskette Drive
- Installing the Diskette Drive
- Peripheral Drives
- System Fans
- The Power Share Board
- Upgrading Baseboard Components
- SGI 1400 Server SCSI Backplane Installation
- Technical Reference
- Baseboard Connectors
- Main Power Connector
- Auxiliary Power
- Diskette Drive
- Front Panel Connector
- The SMM Connector
- The IPMB Connector
- VGA Video Port Connector
- Keyboard and Mouse
- Parallel Port
- Serial Ports A and B
- Universal Serial Bus
- Narrow SCSI Connector
- Wide SCSI Connector
- Internal IDE Connector
- The Hard Drive LED Connector
- ISA Connector Pinouts
- The PCI Connectors
- Baseboard Jumpers
- System I/O Addresses
- Memory Map Address Range
- Interrupts
- Video Modes
- Baseboard Connectors
- Equipment Log and Configuration Worksheets
- Environmental Specifications
- Chassis Warnings and Safety
- Index
14
Chapter 1: Working Inside the System
SCSI Requirements
One narrow and two wide SCSI cables are standard in the system.
AllSCSIdevicesmustbeunterminatedexcepttheperipheralattheendoftheSCSIcable.
Hard drives usually provide an active termination, while CD-ROM drives do not.
Because we recommend putting hard drives only in the internal bays, this means that
you should route the SCSI cable so that the lastdevice on the cable is a hard drive in the
internal bay.
Installing 5.25-inch Peripherals in the Front Bays
Three 5.25-inch half-height bays provide space for tape backup, CD-ROM, or other
removable media drives. Note that system EMI integrity and cooling are both protected
by having drives installed in the bays or filler panels and EMI shields covering the bays.
When you install a drive, save the panel and shield to reinstall in case you should later
remove the drive and not reinstall one in the same bay.
To maintain compliance with electromagnetic compatibility (EMC) regulations, the
5.25-inch bays must be configured with either:
• An EMC-compliant 5.25-inch peripheral device, OR
• A metal cover plate
Caution: The internal SCSI interface in this system supports only single-ended SCSI
devices on the narrow SCSI channel. Connecting differential SCSI drive types to this
interface can result in electrical damage to the baseboard and peripherals.
We recommend that you do NOT install any hard disk drives in the 5.25-inch bays. The
drives cannot be properly cooled in these locations.