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Chapter 8. Installation planning 151
Channel adapter has four ports. Each port has a unique worldwide port name (WWPN). You
can configure the port to operate with the SCSI-FCP upper-layer protocol. Shortwave
adapters and longwave adapters are available on the storage unit. Fibre channel adapters for
SCSI-FCP support provide the following configurations:
A maximum of 64 host ports for DS8100 Model 921 and a maximum of 128 host ports for
DS8300 Models 922 and 9A2
A maximum of 8K host logins per Fibre Channel port
A maximum of 2000 N-port logins per storage image
Access to all 65,280 LUNs per target (one target per host adapter), depending on host
type
Either arbitrated loop, switched fabric, or point-to-point topologies
For more support information about the open system platforms, refer to 15.1.1, “Supported
operating systems and servers” on page 320.
8.4.2 ESCON-attached S/390 and zSeries hosts
You can attach the DS8000 storage unit to the ESCON-attached S/390 and zSeries hosts.
With ESCON adapters, the storage unit provides the following configurations:
A maximum of 32 host ports for DS8100 Model 921 and a maximum of 64 host ports for
DS8300 Models 922 and 9A2.
A maximum of 64 logical paths per port.
Access to 16 control-unit images (4096 CKD devices) over a single ESCON port on the
storage unit.
Zero to 64 ESCON channels; two per ESCON host adapter.
Two ESCON links with each link supporting up to 64 logical paths.
DS8100 storage unit supports up to 16 host adapters that provide a maximum of 32
ESCON links per machine. A DS8300 storage unit supports up to 32 host adapters that
provide a maximum of 64 ESCON links per machine.
The FICON bridge card in ESCON director 9032 Model 5 enables a FICON bridge channel to
connect to ESCON host adapters in the storage unit. The FICON bridge architecture supports
up to 16384 devices per channel. The storage unit supports the following operating systems
for S/390 and zSeries hosts:
Transaction Processing Facility (TPF)
Virtual Storage Extended/Enterprise Storage Architecture (VSE/ESA™)
z/OS
z/VM
Linux
8.4.3 FICON-attached S/390 and zSeries hosts
You can attach the DS8000 storage unit to FICON-attached S/390 and zSeries hosts.
Each storage unit Fibre Channel adapter has four ports. Each port has a unique world wide
port name (WWPN). You can configure the port to operate with the FICON upper-layer
protocol. When configured for FICON, the Fibre Channel port supports connections to a
maximum of 128 FICON hosts. On FICON, the Fibre Channel adapter can operate with fabric