Starting a CSM session

Start a CSM ASP session between two systems using the Start CSM Session (STRCSMSSN) command

Before starting a session, an ASP device description, an ASP copy description for the source and an ASP copy description for the target systems are required. In addition to the device and copy descriptions, a CSM session requires an High Availability (HA) configuration description to communicate with the CSM storage manager. For information and instructions about device descriptions, ASP copy descriptions, and HA configuration descriptions see the links to Configuring copy descriptions and Configuring an ASP device below.

The Start Copy Services Manager (CSM) Auxiliary Storage Pool (ASP) Session (STRCSMSSN) command creates a copy session between two systems. This procedure demonstrates how to create an CSM session for use in a Metro Mirror or Global Mirror relationship.

The Start CSM Session screen can be accessed by:

using the Work with Cluster (WRKCLU) command menu. Select option 10, Work with ASP copy descriptions and use option 21, Start session. Press Enter to open the Select Storage Connection panel.
entering the WRKASPCPYD command that opens the Work with ASP Copy Descriptions screen. Use option 21, Start session. Press Enter to open the Select Storage Connection panel.
typing the STRCSMSSN command and pressing F4.

To create an CSM session with PowerHA and a storage unit using the WRKCLU, follow these steps:

At the Work with Cluster (WRKCLU) command menu select option 10 Work with ASP copy descriptions to go to the Work with ASP copy descriptions screen.
On the Work with ASP Copy Descriptions page, enter option 21, Start session. Press Enter to open the Select Storage Connection panel.
The Select Storage Connection screen appears. Select option 4, CSM from the Select the storage connection interface menu. Press Enter.
The Start CSM Session (STRCSMSSN) command screen appears. Enter the name for the new session in the Session field.
In the Session type field, enter session type.
Enter the CRG name.
After providing the appropriate information needed for the session type, press Enter to start the copy session.

To create a session from the command line, you could enter:

STRCSMSSN SSN(session-name) TYPE(*METROMIR | *GLOBALMIR) ASPCPY(ASP copy description-name) 
DEVDMN(* | device domain-name)

to start a session in the current device domain.

On the Work with ASP Copy Descriptions page, the CSM session is shown under the ASP Session and Session Type columns.

For additional information about the session, select option 25 on the Work with ASP Copy Descriptions page or use the DSPCSMSSN command to display the session.

For details about the STRCSMSSN or DSPCSMSSN command and specific fields, consult the F1 Help or visit the STRCSMSSN and DSPCSMSSN page.