
HP A400 & A500 (rp2400/rp2430 & rp2450/rp2470)
4.16 HP A400 & A500 (rp2400/rp2430 & rp2450/rp2470)
4.16.1 Overview
The rp2400/rp2430 (A400) and rp2450/rp2470 (A500) are the 64-bit successors of the popular A180
rack servers. The chassis is similar — still 2U rack-mountable — but the interior changed significantly.
The various A400/A500 models have various 64-bit PA-RISC processors with large on-chip L1 caches.
The I/O subsystem is based on Astro memory/CPU controller and several Elroy PCI bridges for the
various PCI slots and integrated I/O devices. The difference between the A400 and A500 is that the
latter are SMP-capable and can use more memory modules and PCI cards.
They feature an advanced version of the Secure Web Console found in the earlier A180 systems.
Called “Guardian Service Processor” (GSP) it can be reached with pressing Ctrl-b. It can be used
for a wide range of administrative tasks; in the References section is a link to a detailed command
summary.
Introduced: May 2000, discontinued: September 2002, with prices of the entry version of $4,600 for
the A400-44 and $9,200 for a single-CPU A500-5X.
Model numbers:
A400-36, A400-44, A400-5X: rp2400
A400-6X, A400-7X: rp2430
A500-36, A500-44, A500-5X: rp2450
A500-6X, A500-7X: rp2470
4.16.2 Internals
CPU
The A400 systems are uniprocessor systems while the A500 support up to 2-way SMP. The A400
(rp2400/rp2430) and A500 (rp2450/rp2470) are based on a different system boards, which supported
different types of processors:
A400/rp2400 — A6109A, A6109B: one 440MHz processor
A400/rp2430 — A6890A: one 650MHz processor [probably supports 550MHz too]
A500/rp2450 — A5570A, A5570B, A8329A: up to two 440MHz or 550MHz processors
A500/rp2470 — A6890A: up to two 650MHz or 750MHz processors
The following table lists the various suffixes denoting the different theoretically possible CPU config-
urations. Upgrading from one configuration to another could require the replacement of other parts
besides the processor, e.g., the mainboard or power supply.
-44: PA-8500 440MHz with 512/1024KB on-chip I/D L1 cache each [A400/rp2400, A500/rp2450]
-5X: PA-8600 550MHz with 512/1024KB on-chip I/D L1 cache each [A500/rp2450, A400 prob-
ably too]
-6X: PA-8700 650MHz with 768/1536KB on-chip I/D L1 cache each [A400/rp2430, A500/rp2470]
-7X: PA-8700 750MHz with 768/1536KB on-chip I/D L1 cache each [A500/rp2470]
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