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Specifications and restrictions for Continuous Access Synchronous pair operations

• Specify a volume for the Continuous Access Synchronous P-VOL that is not used in a Continuous

Access Journal pair In the 2DC configuration, use the journal that was registered when 2DC

Cascade was set to Enable in the Edit Journal Volume dialog box.

• The Continuous Access Journal P-VOL that is specified for the Continuous Access Synchronous

S-VOL must be in PAIR status. The only available differential management unit is tracks.

• To resynchronize the Continuous Access Synchronous pair, the Continuous Access Journal

P-VOL must be in PAIR status.

• You cannot use the takeover command on the Continuous Access Synchronous S-VOL when

suspending the Continuous Access Synchronous pair.

• If you release the Continuous Access Synchronous pair when the Continuous Access Journal

P-VOL is in COPY status, the Continuous Access Journal pair becomes suspended by error.

• If the following conditions exist for the configuration, the X at the end of the device ID displayed

in the Paired VOL column in the Pair Operation window is not displayed for the Continuous

Access Synchronous pair at the local site:

◦ The Continuous Access Synchronous S-VOL is a Thin Provisioning virtual volume.

◦ The Continuous Access Journal S-VOL is not a Thin Provisioning virtual volume.

Procedure for 2DC setup

To set up a 2DC configuration

1. Install and set up Continuous Access Synchronous and Continuous Access Journal on the

required systems

2. When registering the journal on the intermediate site, set 2DC Cascade to Enable in the Edit

Journal Volumes dialog box.

3. Create the Continuous Access Journal pair on the intermediate system.

4. When Continuous Access Journal pair status is PAIR, create the Continuous Access Synchronous

pair on the primary system. See HP StorageWorks P9000 Continuous Access Synchronous

User Guide.

5. Confirm that Continuous Access Synchronous pair status becomes PAIR.

146 Continuous Access Journal configurations with Continuous Access Synchronous

HP StorageWorks P9000 - Disk Arrays User Guide

Other manuals for HP StorageWorks P9000 - Disk Arrays