HP StorageWorks XP Disk Array Mainframe Host Attachment and Operations Guide (A5951-96154, September 2010)

FICON/zHPFESCONItem
Multi Mode/ 62.5um
300m (1Gbps) / 150m (2Gbps) / 75m (4Gbps)
Multi Mode/ 50um
500m (1Gbps) / 300m (2Gbps) / 150m (4Gbps)
3 kmShort wave
LC-duplex (see Figure 1)ESCON connectorConnector
Point-to-Point
Switched Point-to-Point
Point-to-Point
Switched Point-to-Point
Topologies
Figure 1 Fiber connectors
.
FICON/zHPF logical specifications
The following table compares the logical specifications of FICON/zHPF and ESCON.
Table 5 Comparing ESCON and FICON/zHPF logical specifications
FICON/zHPFESCONItem
Pipelining
Protocol interlock is reduced.
HandshakingCCW handling
Multiple I/Os execute concurrently per one
channel
Each I/O executes once per
channel
Number of concurrent I/Os
16,384 devices per channel1,024 devices per channelAddressing
Full-duplexHalf-duplexData transfer
Connectivity improvements in FICON/zHPF:
• The interlock between the host and RAID is lowered in terms of the protocol.
• Throughput is increased using multiple I/O process and bi-directional data transfer.
• Increases in the number of the connectable devices per channel.
XP Disk Array Mainframe Host Attachment and Operations Guide 15