Introduction To The Hmc And Se - IBM z13s Technical Manual

11.1 Introduction to the HMC and SE

The HMC is a stand-alone computer that runs a set of management applications. The HMC is
a closed system, which means that no other applications can be installed on it.
The HMC is used to set up, manage, monitor, and operate one or more z Systems CPCs. It
manages z Systems hardware, its logical partitions (LPARs), and provides support
applications. At least one HMC is required to operate an IBM z Systems server. An HMC can
manage multiple z Systems CPCs and can be at a local or a remote site.
If the z13s server is defined as a member of an ensemble, a pair of HMCs is required (a
primary and an alternate). When a z13s server is defined as a member of an ensemble,
certain restrictions apply. For more information, see 11.6, "HMC in an ensemble" on
page 428.
The SEs are two integrated servers in the CPC frame that are supplied together with the z13s
server. One is the primary SE and the other is the alternate SE. The primary SE is the active
one. The alternate SE acts as the backup. Like the HMCs, the SEs are closed systems, and
no other applications can be installed on them.
When tasks are performed at the HMC, the commands are routed to the active SE of the
z Systems CPC. The SE then issues those commands to their CPC and or zBX (if any). One
HMC can control up to 100 SEs and one SE can be controlled by up to 32 HMCs.
Some functions are available only on the SE. With Single Object Operation (SOO), these
functions can be used from the HMC. For more information, see "Single object operating" on
page 405.
With Driver 27 (Version 2.13.1), the IBM Dynamic Partition Manager (DPM) is introduced for
Linux only CPCs with Fibre Channel Protocol (FCP)-attached storage. DPM is a new mode of
operation that enables customers with little or no knowledge of z Systems servers to set up
the system efficiently and with ease. For more information, see Appendix E, "IBM Dynamic
Partition Manager" on page 501
The HMC Remote Support Facility (RSF) provides the important communication to a
centralized IBM support network for hardware problem reporting and service. For more
information, see 11.4, "Remote Support Facility" on page 403.
11.2 HMC and SE enhancements and changes
z13s servers come with the new HMC application Version 2.13.1. Use the What's New task to
explore the new features that are available for each release. For a complete list of HMC and
SE functions, use the HMC and SE (Version 2.13.1) console help system or go to the IBM
Knowledge Center at the following website:
http://www.ibm.com/support/knowledgecenter
After you get to the IBM Knowledge Center, click z Systems, and then click z13s.
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IBM z13s Technical Guide