HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 14

Attaching FICON/zHPF CHAs, FICON/zHPF physical specifications

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are tag numbers. You need tag numbers for the path setup. To determine the tag number, use the devserv command with the rcd (read configuration data) parameter. Attaching FICON/zHPF CHAs You can attach the storage system to a host system using FICON adapters. The storage system can be configured with up to 112 FICON physical channel interfaces. FICON/zHPF uses a mapping layer technique based on Fibre Channel and multiplexing technologies to improve data-transfer rates, reduce the number of channel connections, and support greater distances between storage systems and mainframe hosts. FICON and FICON/zHPF have identical hardware specifications, but FICON/zHPF offers improved performance. By supporting full-duplex data transfers and allowing greater throughput rates over longer distances than ESCON, FICON/zHPF delivers faster data access, higher transaction rates, higher data movement speeds between mainframe servers and storage devices. Infrastructure management is simplified, and allows geographically dispersed data centers for optimal business continuity. This simplifies data center operations and reduces hardware and storage management costs. In summary, FICON/zHPF provides the following key features: • Full-duplex bi-directional data transfers • Multiple I/O processes • Allows small and large data transfers to be transmitted at the same time • High-bandwidth transfer (up to 4 Gbps) • Greater throughput rates over longer distances than ESCON • Lowered interlock between the disk controller and channel • Executing pipeline CCW • Use of FCP as the fibre-channel link transport for zHPF FICON/zHPF physical specifications The following table compares the physical specifications between ESCON and FICON/zHPF. Table 4 Comparing ESCON and FICON/zHPF physical specifications Item Physical Interface ESCON ESCON FICON/zHPF ANSI FC-PH/PC-PI-2 etc. For details, see ANSI standard Fibre Channel Single-Byte Command Code Sets Mapping Protocol - 4. Logical Interface ESCON ANSI FC-SB-2/FC-SB-3/FC-SB-4 200 Mbps Bandwidth and Direction Unidirectional 1 Gbps / 2 Gbps / 4 Gbps Bidirectional Cable Multi Mode/62.5um Single Mode/9um Multi Mode/50 or 62.5um Distance Long wave - Single Mode/9um 10 km, 20 km (with RPQ) 14 FICON/zHPF and ESCON host attachment

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are tag numbers. You need tag numbers for the path setup. To determine the tag number, use the
devserv
command with the
rcd
(read configuration data) parameter.
Attaching FICON/zHPF CHAs
You can attach the storage system to a host system using FICON adapters. The storage system can
be configured with up to 112 FICON physical channel interfaces.
FICON/zHPF uses a mapping layer technique based on Fibre Channel and multiplexing technologies
to improve data-transfer rates, reduce the number of channel connections, and support greater distances
between storage systems and mainframe hosts. FICON and FICON/zHPF have identical hardware
specifications, but FICON/zHPF offers improved performance.
By supporting full-duplex data transfers and allowing greater throughput rates over longer distances
than ESCON, FICON/zHPF delivers faster data access, higher transaction rates, higher data movement
speeds between mainframe servers and storage devices. Infrastructure management is simplified, and
allows geographically dispersed data centers for optimal business continuity. This simplifies data
center operations and reduces hardware and storage management costs.
In summary, FICON/zHPF provides the following key features:
•
Full-duplex bi-directional data transfers
•
Multiple I/O processes
•
Allows small and large data transfers to be transmitted at the same time
•
High-bandwidth transfer (up to 4 Gbps)
•
Greater throughput rates over longer distances than ESCON
•
Lowered interlock between the disk controller and channel
•
Executing pipeline CCW
•
Use of FCP as the fibre-channel link transport for zHPF
FICON/zHPF physical specifications
The following table compares the physical specifications between ESCON and FICON/zHPF.
Table 4 Comparing ESCON and FICON/zHPF physical specifications
FICON/zHPF
ESCON
Item
ANSI FC-PH/PC-PI-2 etc. For details, see ANSI
standard
Fibre Channel Single-Byte Command Code
Sets Mapping Protocol
–
4
.
ESCON
Physical Interface
ANSI FC-SB-2/FC-SB-3/FC-SB-4
ESCON
Logical Interface
1 Gbps / 2 Gbps / 4 Gbps
Bidirectional
200 Mbps
Unidirectional
Bandwidth and Direction
Single Mode/9um
Multi Mode/50 or 62.5um
Multi Mode/62.5um
Cable
Distance
Single Mode/9um
10 km, 20 km (with RPQ)
—
Long wave
FICON/zHPF and ESCON host attachment
14