IBM DS8800 Introduction And Planning Manual page 55

For details on the host systems that support Fibre Channel adapters, go to the
System Storage Interoperation Center (SSIC) website at www.ibm.com/systems/
support/storage/config/ssic.
Fibre Channel adapters for SCSI-FCP support the following configurations:
v A maximum of 128 host ports on the DS8700
v A maximum of 16, 4-port 8 Gbps host adapters on the DS8700
v A maximum of 16 host adapters on the DS8700, Model 941 (2-way) and a
maximum of 32 host adapters on the DS8700, Model 941 (4-way), which equates
to a maximum of 128 Fibre Channel ports
v A maximum of 4 host adapters on the DS8800, Model 951 (2-way) and a
maximum of 16 host adapters on the DS8800, Model 95E (4-way), which equates
to a maximum of 128 Fibre Channel ports
v A maximum of 506 logins per Fibre Channel port, which includes host ports and
PPRC target and initiator ports
v Access to 63700 LUNs per target (one target per host adapter), depending on
host type
v Either arbitrated loop, switched-fabric, or point-to-point topologies
FICON-attached System z hosts overview
This section describes how you can attach the DS8000 storage unit to
FICON-attached System z hosts.
Each storage unit Fibre Channel adapter has four ports. Each port has a unique
worldwide port name (WWPN). You can configure the port to operate with the
FICON upper-layer protocol. For FICON, the Fibre Channel port supports
connections to a maximum of 509 FICON hosts. On FICON, the Fibre Channel
adapter can operate with fabric or point-to-point topologies.
With Fibre Channel adapters that are configured for FICON, the storage unit
provides the following configurations:
v Either fabric or point-to-point topologies
v A maximum of 16 host adapters on DS8700 Model 941 (2-way) and a maximum
of 32 host adapters on Model 941 (4-way), which equates to a maximum of 128
host adapter ports
v A maximum of 16, 4-port 8 Gbps host adapters on the DS8700
v A maximum of eight host adapters on the DS8800 Model 951 (4-way), eight
ports each, which equates to 64 host adapter ports. With the first expansion
model, 95E, another eight host adapters are available, which equates to an
additional 64 ports (a maximum of 128 host adapter ports).
v A maximum of 509 logins per Fibre Channel port
v A maximum of 8192 logins per storage unit
v A maximum of 1280 logical paths on each Fibre Channel port
v Access to all 255 control-unit images (8000 CKD devices) over each FICON port
v A maximum of 512 logical paths per control unit image.
Note: FICON host channels limit the number of devices per channel to 16 384. To
fully access 65 280 devices on a storage unit, it is necessary to connect a
minimum of four FICON host channels to the storage unit. You can access
the devices through a switch to a single storage unit FICON port. With this
method, you can expose 64 control-unit images (16 384 devices) to each host
channel.
Chapter 2. Hardware and features
33