Ficon/Zhpf Logical Specifications; Fiber Connectors; Comparing Escon And Ficon/Zhpf Logical Specifications - HP XP20000/XP24000 Operation Manual
Hp storageworks xp disk array mainframe host attachment and operations guide (a5951-96154, september 2010)
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Also See for XP20000/XP24000:
- Manual (448 pages) ,
- Reference manual (372 pages) ,
- Configuration manual (183 pages)
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Item
Short wave
Connector
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
Item
CCW handling
Number of concurrent I/Os
Addressing
Data 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.
ESCON
3 km
ESCON connector
Point-to-Point
Switched Point-to-Point
ESCON
Handshaking
Each I/O executes once per
channel
1,024 devices per channel
Half-duplex
XP Disk Array Mainframe Host Attachment and Operations Guide
FICON/zHPF
Multi Mode/ 62.5um
300m (1Gbps) / 150m (2Gbps) / 75m (4Gbps)
Multi Mode/ 50um
500m (1Gbps) / 300m (2Gbps) / 150m (4Gbps)
LC-duplex (see
Figure
1)
Point-to-Point
Switched Point-to-Point
FICON/zHPF
Pipelining
Protocol interlock is reduced.
Multiple I/Os execute concurrently per one
channel
16,384 devices per channel
Full-duplex
15
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