IBM z13s, Техническое руководство

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Chapter 1. Introducing IBM z13s servers
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connectivity in support of Parallel Sysplex environments is provided on z13s servers by the
following features:
򐂰 Integrated Coupling Adapter Short Reach - ICA SR (PCIe Coupling Links): The ICA SR
PCIe fanout has two 8 GBps ports that use short reach optics (up to 150m between
CPCs). The ICA SR can only be used for coupling connectivity between IBM z13 or
IBM z13s servers, and the ICA SR can only connect to another ICA SR. Generally, order
ICA SR on the IBM z13s processors used in a Parallel Sysplex to help ensure coupling
connectivity with future processor generations
򐂰
HCA3-O: 12x InfiniBand coupling links offering up to 6 GBps of bandwidth between z13,
zBC12, z196, and z114 systems, for a distance of up to 150 m (492 feet). These links have
improved service times over the HCA2-O links that were used on prior z Systems families.
򐂰 HCA3-O LR: 1x InfiniBand (up to 5 Gbps connection bandwidth) between z13, zEC12,
zBC12, z196, and z114 systems for a distance of up to 10 km (6.2 miles). The HCA3-O LR
(1xIFB) type has twice the number of links per fanout card as compared to type HCA2-O
LR (1xIFB) that was used in the previous z Systems generations.
򐂰 Internal Coupling Channels (ICs): Operate at memory speed.
CFCC Level 21
CFCC level 21 is delivered on z13s servers with driver level 27. CFCC Level 21 introduces the
following enhancements:
򐂰 Support for up to 20 ICF processors per z Systems CPC:
– The maximum number of logical processors in a Coupling Facility Partition remains 16
򐂰 Large memory support:
– Improves availability/scalability for larger CF cache structures and data sharing
performance with larger DB2 group buffer pools (GBPs).
– This support removes inhibitors to using large CF structures, enabling the use of Large
Memory to scale to larger DB2 local buffer pools (LBPs) and GBPs in data sharing
environments.
– The CF structure size remains at a maximum of 1 TB.
򐂰 See Table 1-1 for the maximum number of Coupling Links on N20 models.
Table 1-1 Coupling Links on N20
z13s systems with CFCC Level 21 require z/OS V1R13 or later, and z/VM V6R2 or later for
virtual guest coupling.
Attention: IBM z13s servers do not support ISC-3 connectivity.
Coupling Links Features Ports Speed
HCA3-O LR 8 32 5 Gbps
HCA-O 12X 8 16 6 GBps
ICA SR 8 16 8 GBps