|Cache||128 KB L1
1 MB L2 (A180C)
|Bandwidth||I/O 144 MB/s|
The HP 9000 A-Class A180 and A180C were some of the last 32-bit PA-RISC HP 9000 800 servers released by HP at the end of the 1990s in a small and rack-mountable case, often used for
Marketed by HP fittingly as
Enterprise Internet Servers they were geared towards deployment in rack-space in datacenters, and thus have no video output, only serial console and a web console.
A-Class PA-RISC system design was pretty pared down and streamlined with a simple 32-bit PA-RISC design similar to the HP Visualize B180L workstations minus graphics and some I/O devices.
The A180 servers were followed in 2000 by the newer 64-bit A400 and A500 servers, sharing their cases and external appearance but with more modern system design.
|Model||CPU||Speed||L1 Cache||L2 Cache|
|A180||PA-7300LC||180 MHz||64/64 KB on-chip|
|A180C||PA-7300LC||180 MHz||64/64 KB on-chip||1 MB off-chip optional|
The additional 1 MB L2 cache is the only difference between both systems. It was upgradeable through two DIMM slots near the CPU.
- LASI chipset
- NCR 53C710 8-bit single-ended SCSI-2
- Intel 82596CA 10 Mbit Ethernet controller
- Dino GSC-to-PCI bridge
- Phantom PseudoBC GSC+ port
- DEC 21142/43 10/100BaseT PCI Ethernet
- Other I/O (serial)
» View a system-level ASCII-illustration of the chipset.
- GSC+ general system-level I/O bus (probably clocked at 36 MHz — 144 MB/s peak data rate)
- PCI high performance device I/O bus
- SCSI-2 Fast-Narrow single-ended; main storage I/O bus
- 72-pin ECC EDO SIMMs, 60ns or faster.
- Takes 64-256 MB modules
- Eight slots
- 128 MB (2×64) minimum, 2048 MB (8×256) maximum
- Two slots for either GSC (EISA formfactor) or PCI cards
- One tray for two 3.5″ Fast-Narrow 50-pin SCSI hard drives
- SCSI-2 50-pin single-ended
- Serial RS232C DB9
- Fast Ethernet RJ45
- Ethernet RJ45
|Model||SPEC95, int||SPEC95, fp|
- A180 User’s Manual (PDF, 0.9 MB)
- HP's HP9000 A-Class A180C Enterprise Server - Designed as a low-cost, high-density Web server, is the A-Class as mean as it is lean? Ralph Barker at Dr. Dobb’s (June 1999, accessed December 2017)