HP NetServer AA 4000, Installation Manual

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1-2 HP Netserver AA Solution Installation Guide
Overview of the Endurance Server
The fault tolerant Endurance server provides continuous computing and fully-redundant I/O
devices for your Microsoft Windows operating system and its applications.
The main Endurance components include:
The Endurance technology coordinates all I/O requests and responses between the CEs and
IOPs in a redundant processing environment. Using redundant CEs and memory, the Endurance
software performs CPU and memory functions in a tightly coupled manner. If there is a CPU or
memory failure, the Endurance operating system remains continuously available, providing
constant computing without any loss of context.
Figure 1-1 depicts a sample hardware configuration of the Endurance server.
Table 1-1 Endurance Components
Components Description
2 Compute Elements (CEs) The systems that provide all compute processing. The CEs run the
operating system where you install and execute all applications.
2 I/O Processors (IOP)s The systems that provides I/O resources, including I/O processing,
data storage, and network connectivity.
4 Marathon Interface Cards
(MICs) The PCI-based adapters that enable bidirectional communication
between system components.