HP XP Continuous Access Software - Manual (Page 320)

320 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
A one-host configuration differs from a two-host configuration as follows:
• The host names for the local and remote are the same.
• The poll value under the HORCM_MON section for the S-VOL
configuration file is –1.
When creating more than one BC of the same P-VOL, the mirror unit
column in the HORCM_DEV section must be filled in for the P-VOL
configuration. Do not fill it in for the S-VOL configuration. If the mirror
unit column is not filled in, the default value is 0.