HP StorageWorks XP Remote Web Console Software - Manual (Page 60)

60 Continuous Access XP Journal operations requirements and restrictions
Journal pairs. You can use LUN Manager to protect volumes assigned to Continuous Access XP Journal
pairs.
NOTE: A UNIX or PC server cannot access Continuous Access XP Journal secondary data volumes unless
the pair is split.
Combining Continuous Access XP Journal and Performance Control XP
Initiator ports in the primary array do not support the HP StorageWorks Performance Control XP option.
Combining Continuous Access XP Journal and Business Copy XP
You can use Continuous Access XP Journal and Business Copy XP together in the same array and on the
same volumes to provide multiple copies of data at the primary and/or remote sites. Table 19 describes
host pair status reporting for Continuous Access XP Journal volumes, Business Copy XP volumes, and
Continuous Access XP Journal/Business Copy XP shared volumes. Table 20 shows the currency of the
data on a shared Continuous Access XP Journal/Business Copy XP volume based on Continuous Access
XP Journal and Business Copy XP pair status.
• For shared Continuous Access XP Journal/Business Copy XP volumes, the Continuous Access XP
Journal pair status is reported to the host if you query the Continuous Access XP Journal primary or
secondary data volume. To obtain the Business Copy XP pair status, query the Business Copy XP pair’s
P-VOL.
• Business Copy XP supports multiple S-VOLs for each P-VOL. If you issue a pair status query to a
Business Copy XP P-VOL (for example, pairdisplay), the status of only one Business Copy XP pair is
reported (the pair with the S-VOL having the lowest LDEV ID). To obtain the pair status for the Business
Copy XP pairs with other S-VOLs, you must direct the host query to the specific S-VOL using the
S-VOL’s LDEV ID in the host command. The Business Copy XP displays the port, TID, LUN, LDEV ID and
Business Copy XP pair status of all S-VOLs associated with a P-VOL.
Table 19 Host pair status reporting for Continuous Access XP Journal/Business Copy XP shared volumes
Number of
Continuous
Access XP
Journal pairs
Number of
Business Copy XP
S-VOLs
Pair status reported by local array
0 0 Simplex
0 1 Business Copy XP pair status
0 2 or more Business Copy XP pair status for the pair whose S-VOL has the lowest
LDEV ID
1 0 Continuous Access XP Journal pair status
1 1 Continuous Access XP Journal pair status
1 2 or more Continuous Access XP Journal pair status
Table 20 Data currency of a shared Continuous Access XP Journal/Business Copy XP volume
Continuous
Access XP
Journal pair
status
Business Copy XP pair status
COPY (PD)
PAIR COPY (SP) PSUS COPY
(RS/RS-R)
PSUE
COPY Not current Not current Not current CURRENT Not current Not current
PAIR Not current Not current Not current CURRENT Not current Not current
PSUS/PSUE Not current CURRENT CURRENT CURRENT CURRENT Not current