z14 ZR1 servers support 32K devices per FICON channel for all FICON features. Each FICON Express16S+, FICON Express16S, and FICON Express8S channel can be  defined independently for connectivity to servers, switches, directors, disks, tapes, and  printers, by using the following CHPID types: FICON channels (CHPID type FC or FCP) can be shared among LPARs and defined as  spanned. All ports on a FICON feature must be of the same type (LX or SX). The features are  connected to a FICON capable control unit (point-to-point or switched point-to-point) through  a Fibre Channel switch. The FICON Express16S+ feature is installed in the PCIe+ I/O drawer. Each of the two  independent ports is capable of 4 Gbps, 8 Gbps, or 16 Gbps. The link speed depends on the  capability of the attached switch or device. The link speed is auto-negotiated, point-to-point,  and is transparent to users and applications.  The following types of FICON Express16S+ optical transceivers are supported (no mix on  same card): GLYPH<SM590000> CHPID type FC: The FICON, zHPF, and FCTC protocols are supported simultaneously. GLYPH<SM590000> CHPID type FCP: Fibre Channel Protocol that supports attachment to SCSI devices  directly or through Fibre Channel switches or directors. GLYPH<SM590000> FICON Express16S+ LX feature, FC 0427, with two ports per feature, supporting LC  Duplex connectors GLYPH<SM590000> FICON Express16S+ SX feature, FC 0428, with two ports per feature, supporting LC  Duplex connectors FICON Express16S+ Each port of the FICON Express16S+ LX feature uses an optical transceiver that supports an  unrepeated distance of 10 kilometers (6.2 miles) by using 9 µm single-mode fiber. Each port of the FICON Express16S+ SX feature uses an optical transceiver that supports to  up to 125 meters (410 ft.) of distance variable with link data rate and fiber type. Consideration:  FICON Express16S+ features do not support auto-negotiation to a data  link rate of 2 Gbps (only 4, 8, or 16 Gbps). The FICON Express16S feature is installed in the PCIe+ I/O drawer. Each of the two  independent ports is capable of 4 Gbps, 8 Gbps, or 16 Gbps. The link speed depends on the  capability of the attached switch or device. The link speed is auto-negotiated, point-to-point,  and is transparent to users and applications.  The following types of FICON Express16S optical transceivers are supported: Each port of the FICON Express16S LX feature uses an optical transceiver that supports an  unrepeated distance of 10 kilometers (6.2 miles) by using 9 µm single-mode fiber. Each port of the FICON Express16S SX feature uses an optical transceiver that supports to  up to 125 meters (410 ft.) of distance depending on the fiber that is used. FICON Express16S GLYPH<SM590000> FICON Express16S LX feature, FC 0418, with two ports per feature, supporting LC Duplex  connectors GLYPH<SM590000> FICON Express16S SX feature, FC 0419, with two ports per feature, supporting LC  Duplex connectors Chapter 4. Central processor complex I/O system structure  137