Restrictions about 3dc cascading configuration, Setting of the system option mode 767 – HP StorageWorks XP Remote Web Console Software User Manual
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as the primary journal group and the primary data volume of the XP Continuous Access Journal
pair. Select any mirror ID from 0 to 3 except the one used in
7.
Wait until the status of the XP Continuous Access Journal pair becomes PAIR.
8.
Create an XP Continuous Access Journal pair for delta resync operation by using the data
volumes in the primary and the secondary sites. Create an XP Continuous Access Journal pair
for delta resync operation as follows:
•
Specify the primary data volume in the primary site of the first mirror as the primary data
volume.
•
Specify the secondary data volume in the secondary site of the second mirror as the
secondary data volume.
•
Select any mirror ID from 0 to 3 except the one used in
and
9.
Assign the remote command device to the mirror ID of the XP Continuous Access Journal pair
on the primary site and assign the remote command device to the mirror ID of the XP Continuous
Access Journal pair for delta resync operation.
10. Assign the remote command device to the mirror ID of the XP Continuous Access Journal pair
on the intermediate site.
11. Assign the remote command device to the mirror ID on the secondary site and assign the
remote command device to the mirror ID of the XP Continuous Access Journal pair for delta
resync operation.
If you delete the XP Continuous Access Journal pair created in
or
, the XP Continuous
Access Journal pair created in
will be also deleted.
For more information about configuring ports for XP Continuous Access Journal, see
. For detailed information about configuring journal groups, see
Restrictions about 3DC cascading configuration
This section provides important information need for setting the system option mode 767 to on,
building a 3DC cascading configuration, and using XP Continuous Access Journal pairs.
Setting of the system option mode 767
The system option mode 767 can register two mirrors on a journal group (the default setting is
OFF). After the journal group has been registered, the mode 767 setting is always applied and
can only be changed by deleting the journal group, changing the setting, and then register the
journal group again with the new setting.
NOTE:
The system option mode 767 and the system option mode 707 cannot be enabled at a
time. Set the system option mode 707 to OFF before registering the journal group. However, you
will not be able to register a new journal group for the 2DC configuration of Continuous Access
if you set system option mode 707 to OFF.
Notes on XP Continuous Access Journal pair operations
•
Up to 4096 pairs can be registered in one mirror.
•
Virtual volumes of XP Thin Provisioning cannot be used as primary data volumes and secondary
data volumes.
•
LUSE volumes cannot be used as primary data volumes and secondary data volumes.
•
When creating a XP Continuous Access Journal pair between the intermediate site and the
secondary site, if the secondary data volume of the XP Continuous Access Journal pair between
the primary site and the intermediate site is in COPY status, the XP Continuous Access Journal
pair cannot be created.
3DC Cascading Configuration of Three XP Continuous Access Journal Sites
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