Windows nPartition Guide v5.5

Table Of Contents
Getting to know nPartitions
Partitions are physical or logical mechanisms for demarcating operational environments within
a single system or across multiple systems. Partitioning lets you consolidate systems, allocate
computing resources in response to fluctuations in demand, maximize resource use, and protect
operating environments from disruptive events.
Partitioning continuum
HP offers a continuum of partitioning technologies, as shown in Figure 1-2.
Figure 1-2 Partitioning continuum
virtual
partition
virtual
partition
Virtual Partitions
within a hard
partition
Partitioning
Continuum
application
application
application
application
Resource
Partitions
within an OS
Flexibility
nPartition
nPartition
nPartition
Hard
Partitions
within a node
Isolation
Node Partition A node partition (nPartition) is a hard partition within a cell-based
server. Cell-based servers can be configured either as a single large
symmetric multiprocessor or as several independent systems. An
nPartition has exclusive use of the memory, processor, and I/O
resources belonging to the cells that are assigned to that partition
and can execute its own operating system image.
Virtual Partition A virtual partition is a soft partition within a node or an nPartition.
A virtual partition uses a subset of the system processor, memory,
and I/O resources, and includes operating system and
application-related software. Windows Server 2003 does not support
virtual partitions.
Resource Partition A resource partition is a soft partition within either hard partitions
or virtual partitions and is controlled by workload management
services within the operating system. Resource partitions enable an
operating system instance to allocate resources between competing
applications. Windows Server 2003 does not support resource partitions.
This document focuses on nPartitions running Microsoft Windows Server 2003.
Cell structure of nPartitions
HP Integrity mid-range and high-end servers (rx7620/rx7640, rx8620/rx8640, and Superdome)
are composed of basic building blocks known as cells or cell boards. A cell consists of up to four
processor modules, contains memory modules (up to 32 DIMMs for Superdome cells, up to 16
DIMMs for rx7260 and rx8620 cells), and can connect to an I/O chassis that has I/O cards. A server
cabinet can have several I/O chassis. Some cell-based servers support I/O expansion cabinets to
provide additional I/O chassis.
12 Introduction