HP StorageWorks XP Remote Web Console Software - Manual (Page 42)

Table 15 Host Pair Status Reporting for XP Continuous Access/XP Business Copy Shared Volumes
Pair Status Reported by Storage System Number of
XP Business
Copy S-VOLs
Number of
XP Continuous
Access Pairs
Simplex 0 0
XP Business Copy pair status 1 0
XP Business Copy pair status for the pair whose S-VOL has the
lowest LDEV ID 2 or more 0
XP Continuous Access pair status 0 1
XP Continuous Access pair status 1 1
XP Continuous Access pair status 2 or more 1
Table 16 Data Currency of a Shared XP Continuous Access/XP Business Copy Volume
XP Business Copy Pair Status XP Continuous
Access Pair Status
PSUE COPY(RS/RS-R) PSUS COPY(SP) PAIR COPY (PD)
Not current Not current CURRENT Not current Not current Not current COPY
Not current Not current CURRENT Not current Not current Not current PAIR
Not current CURRENT CURRENT CURRENT CURRENT Not current PSUS/PSUE
Figure 7 (page 42) through Figure 10 (page 44) show the various XP Continuous Access/XP
Business Copy configurations that share volumes. XP Continuous Access supports synchronous and
asynchronous operations for shared XP Continuous Access/XP Business Copy volumes.
•
Figure 7 (page 42) shows an example of an XP Continuous Access P-VOL that also functions
as an XP Business Copy P-VOL. This configuration allows you to use XP Business Copy for
on-site data backup in case of an XP Continuous Access failure, and to use XP Continuous
Access to provide remote backup of the XP Business Copy P-VOL in case of an XP Business
Copy failure.
Figure 7 Shared XP Continuous Access P-VOL/XP Business Copy P-VOL
•
Figure 8 (page 42) shows an example of an XP Continuous Access S-VOL that also functions
as an XP Business Copy P-VOL. This configuration allows you to use XP Business Copy to
provide multiple backup copies of a single XP Continuous Access P-VOL.
Figure 8 Shared XP Continuous Access S-VOL/XP Business Copy P-VOL
42 About XP Continuous Access Operations