Service and Technical Reference Guide, xw3100
G–3
Ultra ATA Drive Guidelines and Features
✎
The above classifications are used as examples only. Your system may or may not support some
Class 4 drives. A diskette drive is Class 4, however, this drive has an exclusive connector on the
system board and is not considered when “counting” the number of devices allowed on a given
ATA controller. For a hardware compatibility list for your specific system, please refer to
www.hp.com/support.
General Attach Guidelines
■
The lower the device class number, the faster the device and the more bandwidth required.
■
Drives installed in the Device 0 positions on both the primary and secondary controllers
receive the greatest possible bandwidth.
■
The bootable ATA hard drive should always be installed on the primary controller in the
Device 0 position.
Device Attach Sequences
Scenario One: a system has two devices. Using the Device Class Table above, the device class
for each is identified as:
■
Ultra ATA-100 hard drive = Class 1
■
DVD-ROM drive = Class 2
Class 1
Hard
Drives
Class 2
High Speed
Optical Drives
Class 3
Optical Storage
Drives
Class 4
Magnetic
Storage Drives
ATA-100
ATA-66
ATA-33
DVD
DVD-CD R/W
R/W CD-ROM
CD-ROM
LS-120
Tape
Zip
Diskette
Attach Sequence - Two Device
Device Name
Device Class
Position
Number
ATA Controller
Device
Number
Ultra ATA-100 hard drive
1
1
Primary
0
DVD-ROM drive
2
2
Secondary
0
Summary of Contents for Workstation xw3100
Page 6: ...vi 338611 001 Service and Technical Reference Guide xw3100 Contents ...
Page 10: ...1 4 338611 001 Service and Technical Reference Guide xw3100 Installing the Operating System ...
Page 106: ...C 8 Service and Technical Reference Guide xw3100 POST Error Messages ...
Page 132: ...D 26 Service and Technical Reference Guide xw3100 Troubleshooting Without Diagnostics ...
Page 144: ...G 6 Service and Technical Reference Guide xw3100 Ultra ATA Drive Guidelines and Features ...