HP XP P9500 Storage User Manual
Page 132
1.
Set up Cnt Ac-J at the primary and two remote sites, and configure ports. See:
“Configuring local and remote systems for Cnt Ac-J ” (page 45)
“Defining fibre-channel port attributes ” (page 44)
2.
Configure Cnt Ac-J journals in three three sites. When you register a journal, CAJ 3DC is
automatically enabled in the Edit Journal Volumes dialog box. This setting allows registration
of two MUs in a journal, as required for the intermediate S-VOL/P-VOL. See
journal volumes in a journal ” (page 50)
for more information about registering journals.
NOTE:
The Edit Journal Volumes setting, CAJ 3DC, cannot be changed in the dialog box.
To disable, it is necessary to delete the journal, disable the setting, and then register the journal
again.
3.
Create a pair in the first mirror, from the local site to a remote site. Specify a value from 0 to
3 as the Mirror ID.
4.
When pair status becomes PAIR, create a pair in the second mirror, from the local site to the
second remote site. Specify the same primary volume and journal used in the first mirror as
the primary volume and journal in the new pair.
Select a Mirror ID from 0 to 3, though not the one used for the first pair.
Make sure pair status changes to PAIR before proceeding.
5.
(Optional) Create a delta resync pair using the secondary volumes in two remote sites. Make
sure to specify the S-VOL in the first remote site (and in the first mirror) as the primary volume.
Specify the S-VOL in the second remote site (and in the second mirror) as the secondary
volume.
Select a Mirror ID from 0 to 3, though not those used in the other two mirrors in the
configuration.
6.
Assign remote command devices to the mirror IDs of the two pairs on the local site.
7.
Assign the remote command device to the mirror IDs on two secondary sites. Additionally,
assign the remote command device to the mirror ID of the Cnt Ac-J pair for delta resync
operation.
8.
Assign remote command devices to the following:
•
Mirror IDs of the two multi-target pairs on the local site
•
Mirror IDs of the multi-target pairs on the two remote sites
•
Mirror ID of the delta resync pair on the two remote sites
There should be a total of six remote devices—two each on the three sites.
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3 Cnt Ac-J data-center configurations