IBM z13s, Technical Manual

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Chapter 9. Reliability, availability, and serviceability
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diagnostics capability that is intended to help you quickly pinpoint problems. This process
in turn can help you to more rapidly address service disruptions.
IBM zAware uses analytics to examine z/OS and Linux on z Systems messages to find
unusual patterns, inconsistencies, and variations. For more information about IBM
zAware, see 9.8, “IBM z Advanced Workload Analysis Reporter” on page 367.
򐂰 Flash Express
Internal flash storage is spread over two PCIe adapters, which mirror each other. If either
card fails, the data is available on the other card. Data is stored over multiple flash devices
in pairs, in a RAID configuration. If the flash device fails, the data is reconstructed
dynamically. For more information about Flash Express, see 9.9, “RAS capability for Flash
Express” on page 368.
򐂰 Redundant IBM z BladeCenter Extension configurations
Redundant hardware configurations in the IBM z BladeCenter Extension (zBX) provide the
capacity to concurrently repair the BladeCenter components. Top-of-rack (TOR) switches
present on the first zBX rack (frame B) are also redundant, which enables firmware
application and repair actions to be fully concurrent.
Power Distribution Units (PDUs) provide redundant ( N+1) connections to the main power
source, improving zBX availability. The internal and external network connections are
redundant throughout all of the zBX racks, TORs, and Blade Centers.
򐂰 Balanced Power Plan Ahead (FC 3003)
The Balanced Power Plan Ahead feature enables you to order the maximum number of
Bulk Power Regulators (BPRs) on any server configuration. This feature helps to ensure
that your configuration will be in a balanced power environment if you intend to add books
and I/O drawers to your server in the future. Regardless of your configuration, all three
BPR pairs will be shipped, installed, and activated. When this feature is ordered, a
corequisite feature, the Line Cord Plan Ahead (FC 1901) is automatically selected.
򐂰 Processor unit (PU) sparing
The z13s Model N20 has two dedicated spare PUs to maintain performance levels should
an active central processor (CP), Internal Coupling Facility (ICF), Integrated Facility for
Linux (IFL), IBM z Integrated Information Processor (zIIP), integrated firmware processor
(IFP), or system assist processor (SAP) fail.
Transparent sparing for failed processors is supported. A z13s Model N10 has no
dedicated spares, but if not all processors are characterized, those unassigned PUs can
be used as spares.
Deploying zAware Version 2: The zAware LPAR type is not supported on z13s or z13
at Driver level 27 servers. The IBM z Appliance Container Infrastructure (zACI) LPAR
type is used instead. The new type of LPAR called
zACI
will be used to deploy the
zAware firmware. During driver maintenance (see 9.4, “Enhanced Driver Maintenance”
on page 360), the zAware LPAR is converted automatically to zACI.