CLARiiON CX Series
OS: IBM AIX
EMC SW: PowerPath
Best practices for trespassing LUNs on CLARiiON connected to AIX hosts
- Manual trespass of CLARiiON LUNs using the Navisphere Manager causes disk operation errors and may interrupt I/O for up to 5 minutes.
- Manual trespass of CLARiiON LUNs using the Navisphere GUI may cause host to hang for up to 5 minutes.
To avoid disk errors in errpt and I/O interruption, it is best to use the following procedure to move LUNs on the CLARiiON array rather than using a manual trespass:
- Use Navisphere to select the default SP for each LUN that you want to move and apply the setting.
- Then on each host attached to these LUNs issue a powermt restore command. This will result in the LUNs being moved to their new default SP without disk operation errors or significant interruption to host I/O.
For more information refer to Primus” emc116939 “.