Specifications
Table Of Contents
- ATTO Technology, Inc.
- Dual Channel Ultra3 (UL3D)
- Dual Channel Ultra3 66 MHz (UL3D-66)
- Single Channel Ultra3 (UL3S)
- Single Channel Ultra3 66 MHz (UL3S-66)
- 1 What is ATTO ExpressPCI?
- 2 SCSI is a key technology for storage
- 3 Installing the ExpressPCI SCSI Host Adapter
- 3.1 Determining cabling and termination
- 3.2 Installing and Updating Device Drivers
- 4 Maximizing Performance with ExpressPCI HBA
- 5 Troubleshooting
- Appendix A Standards and compliances
- Appendix B SCSI host adapter selection guide
- Appendix C Fibre Channel host adapter guide
- Appendix D Contact ATTO Technology, Inc.
2
Introduction
SCSI Bus
Maximum Host PCI transfer rate:
32-bit/33MHz
: 133 MB/sec.
32-bit/66 Mhz
: 266 MB/sec.
64-bit/33 Mhz:
266 MB/sec.
64-bit/66 Mhz
: 532 MB/sec.
Maximum SCSI transfer rate:
Synchronous data rate (UL3D/UL3D-66):
60
MB/sec. per channel (Ultra3 mode)
Asynchronous data rate:
12 MB/sec. per channel
(all models)
SCSI Interface:
SCSI-1, SCSI-2, SCSI-3,
UltraSCSI, Ultra2SCSI, Ultra 160/m SCSI,
Ultra3 SCSI
Electrical Signals:
single-ended, low voltage
differential
Extensive device support:
UL3D/UL3D-66
: Up to 210 devices when used
with LUNs (Wide and Narrow devices)
UL3S/UL3S-66:
Up to 210 devices when used
with LUNs (Wide and Narrow devices)