Hardware Management Consoles And Support Elements; Ibm Z Bladecenter Extension (Zbx) Model 004 - IBM z13s Technical Manual

FICON (better recovery on fiber)
N+1 SCH and power supplies
N+1 SEs
ASHRAE A3 support
For more information, see Chapter 9, "Reliability, availability, and serviceability" on page 355.

1.4 Hardware Management Consoles and Support Elements

The HMCs and SEs are appliances that together provide platform management for
z Systems.
The HMC is a workstation designed to provide a single point of control for managing local or
remote hardware elements. In addition to the HMC console tower, a new 1U Rack Mounted
HMC with 19-inch rack-mounted components can be placed in customer supplied 19-inch
racks.
The HMCs and SEs are appliances that together provide platform management for
z Systems. For z13s servers, a new driver level 27 is required. HMC (V2.13.1) plus Microcode
Change Levels (MCLs) and the Support Element (V2.13.1) are required to be installed.
HMCs and SEs also provide platform management for zBX Model 004 and for the ensemble
nodes when the z Systems CPCs and the zBX Model 004 nodes are members of an
ensemble. In an ensemble, the HMC is used to manage, monitor, and operate one or more
z Systems CPCs and their associated LPARs, and the zBX Model 004 machines. Also, when
the z Systems and a zBX Model 004 are members of an ensemble, the HMC
(ensemble) management scope, which is compared to the SEs on the zBX Model 004 and on
the CPCs, which have local (node) management responsibility.
When tasks are performed on the HMC, the commands are sent to one or more CPC SEs or
zBX Model 004 SEs, which then issue commands to their CPCs and zBXs. To provide high
availability, an ensemble configuration requires a pair of HMCs: A primary and an alternate.
For more information, see Chapter 11, "Hardware Management Console and Support
Elements" on page 387.

1.5 IBM z BladeCenter Extension (zBX) Model 004

The IBM z BladeCenter Extension (zBX) Model 004 improves infrastructure reliability by
extending the mainframe systems management and service across a set of heterogeneous
compute elements in an ensemble.
The zBX Model 004 is only available as an optional upgrade from a zBX Model 003 or a zBX
Model 002, through MES, in an ensemble that contains at least one z13s CPC and consists of
these components:
Two internal 1U rack-mounted Support Elements providing zBX monitoring and control
functions.
Up to four IBM 42U Enterprise racks.
Up to eight BladeCenter chassis with up to 14 blades each, with up to two chassis per
rack.
10
From Version 2.11. For more information, see 11.6, "HMC in an ensemble" on page 428.
Chapter 1. Introducing IBM z13s servers
10
has a global
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