HP XP7 Storage - Manual (Page 10)

Management software consists of:
•
Remote Web Console graphical user interface (GUI)
•
RAID Manager
Continuous Access Journal components are illustrated in the following figure and described in
greater detail in the following topics.
Figure 2 Continuous Access Journal components
XP7 storage systems
Continuous Access Journal can be operated using two XP7 systems, one at the local site and one
at the remote site. The primary system consists of the main control unit and the . The secondary
system consists of the remote control unit and the SVP.
•
Each XP7 system can function simultaneously as a primary and secondary system.
•
The primary system communicates with the secondary system over dedicated fibre-channel
remote copy connections.
•
The primary system controls the primary storage volume (P-VOL) and the following operations:
Host I/O write to the P-VOL ◦
◦ P-VOL data copy to the master journal
◦
Initial copy and update copy between the P-VOL and secondary volume (S-VOL).
•
The secondary system controls the secondary storage volume (S-VOL) and the following
operations:
◦ Journal commands to the primary system.
◦ Journal data copy from the master to the restore journal
◦ Restore journal data copy to the S-VOL
◦ Pair status management and configuration (for example, rejecting write I/Os to the
S-VOLs).
10 Continuous Access Journal overview