HP StorageWorks XP Remote Web Console Software - Manual (Page 72)

Figure 14 Fibre Channel Interface Direct Connection (NL_Port)
In the environment using 8US P/K between the MCU and the RCU and in case of a long
distance (approximately 100km) and direct connection configuration, by setting host mode
options, the response time of the host mode I/O can be improved.
As for the configuration for setting the host mode options, ensure the use of the HDS-approved
extender.
When to select this option? Host mode options No.
Where a long distance between M
and R (approximately 100km) and a
Switch is not used and in other cases,
where the number of BB Credits
controlling the amount of transfer data
on Fibre must be tuned. Use by
combining with host mode option 50. BB Credit Set Up Option 1*1*2 49
Where a long distance between M
and R (approximately 100km) and a
Switch is not used and in other cases,
where the number of BB Credits
controlling the amount of transfer data
on Fibre must be tuned. Use by
combining with host mode option 49. BB Credit Set Up Option 2*1*2 50
Were a long distance between M
and R (approximately 100km) and a
Switch is not used and in other cases,
where the response time of host I/O
of XP Continuous Access must be
tuned. Round Trip Set Up Option*2 51
*1 For using the function of increasing the number of BB Credits, the setting of both of the
options, host mode options 49 and 50, must be performed.
*2 Host mode options 49, 50, and 51 are enabled only for 8US package.
Figure 15 Fibre Channel Interface Switch Connection (NL_Port or N_Port)
1. Some switch vendors require F port (for example, McData ED5000).
2. To set ports, use LUN Manager and set port topology to:
NL port: Fab on, FC-AL
N port: Fab on, Point-to-Point
72 Preparing for TrueCopy for Mainframe Operations