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Fibre Channel adapter (FC 5716). Model 700 provides up to 64 bootable partitions. In most
cases, both the FAStT Storage server and the p5-550 or the 7311 Model D20 I/O drawers are
connected to a storage area network (SAN). If only space for the rootvg is needed, the FAStT
Model 100 is a good solution.
For support of additional features and for further information about the FAStT family, refer to
the following Web site:
http://www.storage.ibm.com/hardsoft/disk/fastt/index.html
IBM TotalStorage Enterprise Storage Server
The IBM TotalStorage Enterprise Storage Server (ESS) is the high-end premier storage
solution for use in storage area networks. The 2105 Model 800 provides from 582 GB up to
55.9 TB of usable disk capacity. An ESS system can also be used to provide disk space for
booting LPARs or Micro-partitions. An ESS is usually connected to a SAN to which the
p5-550 is also connected by using Gigabit Fibre Channel adapters (FC 5716).
For further information about ESS, refer to the following Web site:
http://www.storage.ibm.com/hardsoft/products/ess/index.html
2.9 Dynamic logical partitioning
Introduced with the POWER4 processor product line and the AIX 5L Version 5.1 operating
system, the logical partition (LPAR) became available. The technology offered the capability
to divide a pSeries system into separate systems, where each LPAR runs an operating
environment on dedicated attached devices, such as processors, memory, and I/O
components. When the customer requested system flexibility to change the system topology
on demand, it was achieved by modifying the system layout on the required HMC.
Later, dynamic LPAR increased the flexibility, allowing selected system resources, such as
processors, memory, and I/O components to be added and deleted from dedicated partitions
while they are executing. Therefore, AIX 5L Version 5.2 with all the necessary enhancements
to enable dynamic LPAR was introduced in 2002. This requires an attached HMC, with the
proper level of software, to control the system resources and an updated system firmware
level to electronically isolate systems resources. The ability to reconfigure dynamic LPARs
encourages system administrators to dynamically redefine all available system resources to
reach the optimum capacity for each defined dynamic LPAR.
Dynamic logical partitioning is supported by AIX 5L for POWER V5.2, or later. Dynamic
logical partitioning is planned to be supported by SUSE LINUX Enterprise Server 9, or later,
but with reduced functionality (changing memory attributes dynamically is not supported at
the time of writing). Dynamic logical partitioning is not supported by current version of Red
Hat Enterprise Linux AS for POWER Version 3.
USB resources are considered a single group, as are slimline devices. Groups can only be
allocated to a single partition at a time.
2.10 Micro-Partitioning
Based on the partitioning concepts of a stable and well-known mainframe technology and
existing LPAR/dynamic LPAR implementation on POWER4 and POWER4+ servers, The
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p5-550 Technical Overview and Introduction
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