16.10.6 Operation when adding disks

If you create a DB area file on an added disk, you need to set each node's OS to recognize the additional disk in advance. To set the OSs to recognize the additional disk, either close all HADB servers in a multi-node configuration and restart all nodes' OSs, or restart each node's OS one at a time by using the following procedure.

Example:

In the case of the following multi-node configuration, add the disk, and then set each node's OS to recognize the additional disk:

• Node 1 (master node)

• Node 2 (slave node)

• Node 3 (slave node)

Procedure:

1. Normally terminate the HADB servers of node 2 and node 3 by using the adbstop --node command

2. Restart the OSs of node 2 and node 3

3. Return node 2 and node 3 to the multi-node configuration

   For details about how to return nodes to a multi-node configuration, see 16.15.3 Returning a node to the multi-node configuration.

4. Switch over the master node by using the command, and switch either node 2 or node 3 over to the master node

   For details on how to switch over the master node by using a command, see 16.7 Switching over the master node by using a command.

   At this time, node 1's HADB server stops automatically.

5. Restart the OS of node 1

6. Return node 1 to the multi-node configuration

   For details about how to return nodes to a multi-node configuration, see 16.15.3 Returning a node to the multi-node configuration.

   At this time, node 1 is returned as a slave node to the multi-node configuration. To set node 1 as the master node, see (3) Procedure for switching over a returned node to the master node in 16.15.3 Returning a node to the multi-node configuration.

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