Enabling the ALUA mode of an existing GAD pair

Global Active Device for VSP One Block

Version

10.5.x

Audience

anonymous

Part Number

MK-23VSP1B011-10

ft:lastEdition

2026-05-04

To enable the ALUA mode of an existing GAD pair, you must suspend the pair, enable the ALUA mode, resynchronize the pair, and then restart the server while the pair is suspended. When you resynchronize the pair, the ALUA mode of the S-VOL is also enabled.

Important: This procedure requires the host server to be restarted to recognize the new ALUA mode setting.

Shut down the server.
Suspend the GAD pair.
```
pairsplit -g oraHA -IH0
```

Enable the ALUA mode.

raidcom modify ldev -ldev_id 0x2222 -alua enable -IH0

Resynchronize the GAD pair.
```
pairresync -g oraHA -IH0
```
Start the server.
You should be aware of how the server behaves if you change ALUA settings after the server recognizes those settings or if those changes are made while the server is online.
Note:
- If you change the ALUA settings for a volume that the server has already recognized, shut down the server before changing the ALUA settings. After changing the settings, start the server, and then enable the server to recognize the volume. The server can recognize the changes in the ALUA settings.
- If you change the ALUA settings while the server is online, the server might not recognize the changes in the ALUA settings or might perform abnormally.