User's Guide

# paircreate –g dg13 –f async –nocsus –vl –c 15 –jp <Journal_id>
-js <Journal_id>
5. Once the Delta Resync pair is created, issue the horctakeover command at DC1 so
that the data source is at DC1. This suspends dg23 device group pair. Resync the dg23 device
group using pairesync command:
# horctakeover –g dg12
# pairresync –g dg23
Creating Device Group Pairs for Multi-Hop Bi-Link configuration
For a Multi-Hop-Bi-Link configuration, first create the Continuous Access Sync or Continuous
Access Journal pair between DC1 and DC2. Create the Continuous Access Journal
pair dg23 after creating the pair between DC1 and DC2:
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 Continuous Access Journal device group pair dg23 between DC2 and DC3
from any DC2 node:
— paircreate -g dg23 -vl -f async -c 15 -jp <Journal_id> -js
<Journal_id>
Creating Device Group Pairs for Multi-Target Bi-Link configuration
For a Multi-Target-Bi-Link configuration, first create the Continuous Access-Sync or
Continuous Access Journal pair between DC1 and DC2. Then create the Continuous Access
journal pair between DC1 and DC3. Use the following to create the pairs:
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 Continuous Access Journal device group pair dg13 between DC1 and DC3
from any DC1 node:
— paircreate -g dg23 -vl -f async -c 15 -jp <Journal_id> -js
<Journal_id>
NOTE: Paired devices must be of compatible sizes and types. Only OPEN-V LUNs are supported
for Three Data Center configuration.
Configuring an P9000 or XP 3DC DR Solution 439