HP StorageWorks XP Remote Web Console Software - Manual (Page 36)

36 Continuous Access XP Journal
Command View XP or XP Remote Web Console is required for the Continuous Access XP Journal
graphical user interface. Continuous Access XP Journal is a component of Command View XP or XP
Remote Web Console. The Continuous Access XP Journal license key codes are required to enable
Continuous Access XP Journal’s options on the local disk array (see ” Enabling Continuous Access XP
Journal options ” on page 48). Separate license codes are required for each local disk array.
NOTE: Administrator or Continuous Access XP Journal write access to Command View XP or XP Remote
Web Console is required to perform Continuous Access XP Journal operations. Users without Administrator
or Continuous Access XP Journal write access can only view Continuous Access XP Journal information.
One-to-one volume copy operations
Continuous Access XP Journal requires a one-to-one relationship between the logical volumes of the volume
pairs. A volume (LU) can only be assigned to one Continuous Access XP Journal pair at a time.
NOTE: Continuous Access XP Journal does not support operations in which one primary data volume is
copied to more than one secondary data volume, or more than one primary data volume is copied to one
secondary data volume.
Because Continuous Access XP Journal operates on logical volumes rather than on files, multivolume files
require special attention. For complete duplication and recovery of a multivolume file (for example, a large
database file spanning several volumes), ensure that all volumes of the file are copied to Continuous
Access XP Journal secondary data volume, and use Continuous Access XP Journal to ensure update
sequence consistency across this group of secondary data volume.
Logical unit (LU) types
Table 9 lists the DKC and DKU emulation types that can be used for Continuous Access XP Journal.
Continuous Access XP Journal displays emulation types of primary and secondary data volumes.
Table 10 lists the volumes and volume capacities that can be used for Continuous Access XP Journal data
volumes and journal volumes.
NOTE: The capacity of a journal volume is not included in the accounting capacity.
Table 9 Supported emulation types
Emulation Supported type
DKC 3990-6E, 2105
DKU (Drive) Open-V
NOTE: Only Open-V can be used for journal volumes.
Table 10 Supported data volumes and journal volumes
Type Support specifications
Data volume
Journal volume
Custom volume Available
HP Cache LUN XP volume Available