IBM z13s, Техническое руководство

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IBM z13s Technical Guide
򐂰 Special-purpose features:
– Cryptography
– Flash Express
– zEDC Express
򐂰 Reliability, availability, and serviceability
1.3.1 Models
z13s servers have a machine type of 2965. Two models are offered: N10 and N20. The model
name indicates the maximum number of PUs available for purchase. A PU is the generic term
for the IBM z/Architecture processor unit (processor core) on the SCM.
On z13s servers, some PUs are part of the system base. That is, they are not part of the PUs
that can be purchased by clients. They are characterized by default as follows:
򐂰 System assist processor (SAP) that is used by the channel subsystem. There are three
standard SAPs for the N20, and two for the N10.
򐂰
One integrated firmware processor (IFP), which is used in support of select features, such
as zEDC and 10GbE RoCE.
򐂰 Two spare PUs for the N20 only that can transparently assume any characterization during
a permanent failure of another PU.
The PUs that clients can purchase can assume any of the following characterizations:
򐂰 Central processor (CP) for general-purpose use.
򐂰 Integrated Facility for Linux (IFL) for the use of Linux on z Systems.
򐂰
z Systems Integrated Information Processor (zIIP
7
). One CP must be installed with or
before the installation of any zIIPs.
򐂰 ICF is used by the CFCC.
򐂰 Extra SAPs are used by the channel subsystem.
A PU that is not characterized cannot be used, but is available as a spare. The following rules
apply:
򐂰 At least one CP, ICF, or IFL must be purchased and activated for either the N10 or N20
model.
򐂰
PUs can be purchased in single PU increments and are orderable by feature code.
򐂰 The total number of PUs purchased cannot exceed the total number that are available for
that model.
򐂰 The number of installed zIIPs cannot exceed twice the number of installed CPs.
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zAAPs are not available on z13s servers. The zAAP workload is run on zIIPs.
zIIPs: At least one CP must be purchased with, or before, a zIIP can be purchased.
Clients can purchase up to two zIIPs for each purchased CP (assigned or unassigned)
on the system (2:1 ratio). However, for migrations from zBC12 with zAAPs, the ratio
(CP:zIIP) can go up to 4:1.