IBM OpenPower 720, Технический обзор и введение

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© Copyright IBM Corp. 2004. All rights reserved.
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Chapter 1.
General description
The IBM
Sserver
OpenPower 720 deskside and rack-mount servers are designed for
greater application flexibility, with innovative technology, designed to help you become an on
demand business. With POWER5 microprocessor technology, the OpenPower 720 is the a
high-performance entry Linux server that, as an orderable option, includes the next
development of the IBM partitioning concept, Micro-Partitioning.
Through the optional POWER Hypervisor feature (FC 1965), LPAR on a 4-way OpenPower
720 (9124-720) allows up to four dedicated partitions. In addition, the POWER Hypervisor
feature enables the support up to 40 Micro-Partitions on a 4-way system. Micro-Partitioning
technology enables multiple partitions to share a physical processor. The POWER Hypervisor
controls dispatching the physical processors to each of the partitions. In addition to
Micro-Partitioning and Virtual Ethernet provided by the POWER Hypervisor, the optional
Virtual I/O Server feature allows sharing of physical network adapters and enables the
virtualization of SCSI storage. Together, these two features are known as Advanced
OpenPower Virtualization.
To dynamically manage the resources on a system, and to configure and use Virtual
Ethernet, Shared Ethernet adapters, and Virtual SCSI, an Hardware Management Console is
required.
Simultaneous multi-threading (SMT) is a standard feature of POWER5 technology that allows
two threads to be executed at the same time on a single processor. SMT is selectable with
dedicated or processors from a shared pool using Micro-Partitioning technology.
The symmetric multiprocessor (SMP) OpenPower 720 system features base 1-way or 2-way
(1.5 GHz), 2-way or 4-way (1.65 GHz), 64-bit, copper-based POWER5 microprocessors with
36 MB off-chip Level 3 cache configurations standard on 2-way and 4-way models. Main
memory starting at 512 MB can be expanded up to 64 GB, based on the available DIMMs, for
higher performance and exploitation of 64-bit addressing to meet the demands of enterprise
computing, such as large database applications.
Included with the OpenPower 720 are five hot-plug PCI-X slots with Enhanced Error Handling
(EEH), one embedded Ultra320 SCSI dual-channel controller, one 10/100/1000 Mbps
integrated dual-port Ethernet controller, two service processor communications ports, two
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