Chapter 1
HP A7173A Adapter Overview
About the A7173A Adapter
6
About the A7173A Adapter
The HP A7173A Dual Channel PCI-X Ultra320 SCSI Host Bus Adapter (A7173A adapter) provides two
Ultra320 SCSI Parallel Interface Specification-4 (SPI-4) interfaces to PCI computer systems.
The A7173A adapter is a PCI-X adapter capable of up to 133 MHz, 64 bit data transfers.
NOTE
HP recommends installing the A7173A adapter in a PCI-X, 133 MHz, 64 bit, 4x (“Twin Turbo”
or “Dual Rope”) slot. The A7173A adapter can be installed in any PCI or PCI-X slot, but
performance will be maximized when it is installed in a 133 MHz, 64 bit, 4x (“Twin Turbo” or
“Dual Rope”) PCI-X slot.
The A7173A adapter allows connection of up to 15 SCSI devices per channel, or a total of 30 SCSI devices per
A7173A adapter.
The A7173A adapter provides synchronous or asynchronous 16-bit (Wide) Low Voltage Differential (LVD)
or 16-bit (Wide) Single-Ended (SE) SCSI solutions, using only one PCI slot.
The A7173A adapter is backward compatible, supporting Ultra160, Ultra2, Ultra, and Fast SCSI devices.
The A7173A adapter cannot be connected to FWD (HVD) devices. Consult with your Hewlett-Packard
representative for information on specific system configurations.
NOTE
For a detailed summary of A7173A adapter features and specifications, see Table 1-1, “A7173A
Adapter Features and Specifications,” on page 7.
Figure 1-1
The A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter
