GLYPH<SM590000> Connectivity options 

– IBM z14™ servers can be connected to an  extensive range of interfaces, such as FICON/FCP for SAN connectivity, 10 Gigabit Ethernet, Gigabit Ethernet, and 1000BASE-T Ethernet for LAN connectivity, zHyperLink Express for storage connectivity (low latency compare to FICON). 

– For CPC to CPC connections, IBM z14™ servers use Integrated Coupling Adapter (ICA SR), CE LR, or Parallel Sysplex InfiniBand (IFB). 

– The 25GbE RoCE Express2, 10GbE RoCE Express2, and the 10GbE RoCE Express features provides high-speed memory-to-memory data exchange to a remote CPC by using the Shared Memory Communications over RDMA (SMC-R) protocol for TCP (socket-based) communications. 

GLYPH<SM590000> Concurrent I/O upgrade 

You can concurrently add I/O features to IBM z14™ servers if unused I/O slot positions are available. 

GLYPH<SM590000> Concurrent PCIe I/O drawer upgrade 

More PCIe I/O drawers can be installed concurrently if free frame slots for the PCIe I/O drawers are available. 

GLYPH<SM590000> Dynamic I/O configuration 

Dynamic I/O configuration supports the dynamic addition, removal, or modification of the channel path, control units, and I/O devices without a planned outage. 

GLYPH<SM590000> Pluggable optics: 

– The FICON Express16S+ FICON Ex press16S and FICON Express8S, OSA-Express7S, OSA-Express6S, OSA-Express5S, RoCE Express2, and RoCE Express features have Small Form-Factor Pluggable (SFP) optics.$^{1}$ These optics allow each channel to be individually serviced in a fiberoptic module failure. The traffic on the other channels on the same feature can continue to flow if a channel requires servicing. 

– For zHyperLink Express, it uses the cablewith MTP connector and the cable goes to a CXP connection to the adapter. The CXP optics are provided with the adapter. 

GLYPH<SM590000> Concurrent I/O card maintenance 

Every I/O card that is plugged in an I/O drawer or PCIe I/O drawer supports concurrent card replacement during a repair action. 

## 4.2.2 Supported I/O features 

The following I/O features are supported: 

GLYPH<SM590000> Up to 320 FICON Express16S+ channels (up to 160 on M01) 

GLYPH<SM590000> Up to 320 FICON Express16S channels (up to 160 on M01) 

GLYPH<SM590000> Up to 320 FICON Express8S channels (up to 160 on M01) 

GLYPH<SM590000> Up to 48 OSA-Express7S 25GbE SR ports 

GLYPH<SM590000> Up to 96 OSA-Express6S ports 

GLYPH<SM590000> Up to 96 OSA-Express5S ports 

GLYPH<SM590000> Up to 16 zEDC Express features 

GLYPH<SM590000> Up to eight 25GbE RoCE Express2 features 

