HP Model 748 HP Model 748 Service Handbook - Page 15

Rack Mounting Configurations, Memory, Mass Storage, HP A4503A 64 MB RAM card

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Product Information Product Description Rack Mounting Configurations Rack mounting orientations, either front out or back out are supported. Power switching has both front and back accessibility. Status and test LEDs are located on the Model 744 VMEbus Board Computers. The mass storage module can be configured for front or rear access to removable media. A rack-mount kit is supplied with each workstation. These features allow the workstation to be operated from either the front or back, depending on how they are mounted. EISA and VME card cages are fixed and cannot be reversed. Memory Standard memory is an Error Checking and Correcting (ECC) RAM board. 32 MB is the minimum required for the HP-UX operating system. Memory boards are designed to be stacked in the single stack available on a Model 744. Options may add more factory installed memory. Memory for a 744 upgrade include: • HP A4503A 64 MB RAM card • HP A4449A 128 MB RAM card • HP A6005A 256MB RAM card Mass Storage Up to four single-ended SCSI devices may be installed in the mass storage tray. One or two single-ended SCSI removable media devices may be installed. Mass storage devices are factory installed with the removable media drives accessed from the front. Users may reconfigure devices to reverse the access. Hard disk drives are single-ended devices in the standard tray. Hard drives are typically installed behind the removable media devices. Mass storage devices are also available as these upgrades: • 4 GB SE Hard Disk Drive Upgrade • 9 GB SE Hard Disk Drive Upgrade • DDS Tape Drive Upgrade • CD-ROM Disk Drive Upgrade • 3.5-in. Flexible Disk Drive Upgrade 1-5

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Product Information
Product Description
1-5
Rack Mounting Configurations
Rack mounting orientations, either front out or back out are supported. Power switching
has both front and back accessibility. Status and test LEDs are located on the Model 744
VMEbus Board Computers. The mass storage module can be configured for front or rear
access to removable media. A rack-mount kit is supplied with each workstation.
These features allow the workstation to be operated from either the front or back, depend-
ing on how they are mounted. EISA and VME card cages are fixed and cannot be
reversed.
Memory
Standard memory is an Error Checking and Correcting (ECC) RAM board. 32 MB is the
minimum required for the HP-UX operating system. Memory boards are designed to be
stacked in the single stack available on a Model 744. Options may add more factory
installed memory.
Memory for a 744 upgrade include:
•
HP A4503A 64 MB RAM card
•
HP A4449A 128 MB RAM card
•
HP A6005A 256MB RAM card
Mass Storage
Up to four single-ended SCSI devices may be installed in the mass storage tray. One or
two single-ended SCSI removable media devices may be installed. Mass storage devices
are factory installed with the removable media drives accessed from the front. Users may
reconfigure devices to reverse the access. Hard disk drives are single-ended devices in the
standard tray. Hard drives are typically installed behind the removable media devices.
Mass storage devices are also available as these upgrades:
•
4 GB SE Hard Disk Drive Upgrade
•
9 GB SE Hard Disk Drive Upgrade
•
DDS Tape Drive Upgrade
•
CD-ROM Disk Drive Upgrade
•
3.5-in. Flexible Disk Drive Upgrade