Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP A.11.00

first create Continuous Access sync or Journal pair between DC1 and DC2 and then Continuous
Access Journal between DC1 and DC3. Then, create a Delta Resync pair between DC2 and DC3
after creating of the Continuous Access Journal pairs.
To create pairs with Delta Resync pair between DC2 and DC3, use the following:
1. Create the Continuous Access sync or Journal device group between DC1 and DC2.
a. When using 3DC Sync/CAJ replication, create the Continuous Access Synchronous
device group pair dg12 from any node in DC1:
# paircreate –g dg12 –f <data or never> –vl –c 15
or
When using 3DC CAJ/CAJ replication, create the Continuous Access Journal device
group pair dg12 from any node in DC1:
# paircreate –g dg12 –f async –vl –c 15 –jp <Journal_id> -js
<Journal_id>
b. Wait for the PAIR state to come up for the dg12 device group:
# pairevtwait -g dg12 -t 300 -s pair
2. Create the Continuous Access Journal device group between DC1 and DC3.
a. Create the Continuous Access Journal pair dg13 from any node in DC1:
# paircreate –g dg13 –f async –vl –c 15 –jp <Journal_id> –js
<Journal_id>
b. Wait for the PAIR state to come up for the dg13 Journal device group:
# pairevtwait -g dg13 -t 300 -s pair
3. Create the Delta Resync pair dg23 between DC2 and DC3 from any node in DC2:
# paircreate –g dg23 –f async –nocsus –vl –c 15 –jp <Journal_id>
-js <Journal_id>
For configuring Delta Resync pair between DC1 and DC3, the steps differ based on 3DC
Sync/CAJ or 3DC CAJ/CAJ replication. For 3DC CAJ/CAJ replication, first create Continuous
Access Journal pair between DC1 and DC2 and then between DC2 and DC3. Create a
Delta Resync pair between DC1 and DC3 after creating the Continuous Access Journal
pairs.
To create pairs with Delta Resync pair between DC1 and DC3, and when using 3DC CAJ/CAJ
replication:
1. Create the Continuous Access Journal device group between DC1 and DC2.
a. Create the Continuous Access Journal pair dg12 from any node in DC1:
# paircreate –g dg12 –f async –vl –c 15 –jp <Journal_id> -js
<Journal_id>
b. Wait for the PAIR state to come up for the dg12 Journal device group:
# pairevtwait -g dg12 -t 300 -s pair
2. Create the Continuous Access Journal device group between DC2 and DC3.
a. Create the Continuous Access Journal pair dg23 from any node in DC2.
# paircreate –g dg23 –f async –vl –c 15 –jp <Journal_id> -js
<Journal_id>
b. Wait for the PAIR state to come up for the dg13 Journal device group.
# pairevtwait -g dg23 -t 300 -s pair
3. Create the Delta Resync pair dg13 between DC2 and DC3 from any node in DC1:
# paircreate –g dg13 –f async –nocsus –vl –c 15 –jp <Journal_id>
-js <Journal_id>
116 Designing a Three Data Center Disaster Recovery Solution