HP StorageWorks XP Disk Array Mainframe Host Attachment and Operations Guide XP24000, XP20000 (A5951 - 96151, September 2007)

8MFLR8MFSParameter
/ 16 / 24 / 32 / 40/ 48 /
56 / 64 / 72 / 80 / 88/ 96
/ 104 / 112
8/ 16 / 24 / 32 / 40/ 48 / 56
/ 64 / 72 / 80 / 88/ 96 / 104
/ 112
Number of Ports per Storage System
on DKA boards (DKA Slot Used)
Long WaveShort WaveSmall Form Pluggable (SFP) Support
10km500m / 300m / 150mMaximum Cable Length
(See note)
NOTE:
The maximum cable length values for the 16MFSR apply when 50/125µm multi-mode fiber cable
is used. If 62.5 / 125 µm multi-mode fiber cable is used, the values shown in the table decrease
as follows:
500m (100 Mbps) decreases to 300m.
300m (200 Mbps) decreases to 150m.
150m (400 Mbps) decreases to 75m.
Logical Paths
FICON channels are capable of fast I/O rates. However, mainframes have a limited number of paths
that can be defined for a single control unit. One way to address this limitation is to use logical paths.
With multiple logical paths, additional paths are defined to the logical control units, providing the
host with access to a greater number of control unit interfaces and greater bandwidth.
Logical paths are identified through a combination of channel image number, CU image number,
channel port address and CU port address. The following two figures show two conceptual drawings
of mainframe logical paths.
Figure 3 Mainframe Logical Paths (Example 1)
FICON and ESCON Host Attachment28