Change current owner of a LUN

You have to right click on the LUN and do Trespas to change the current ownership.

Easy question, easy answer.

Not a requirement, but I'd recommend changing the "default SP" on the LUNs you plan on moving as well as just trespassing them to avoid any confusion or "false trespassed LUN" reports down the road if this is a permenant change.

To do this you need to right-click on the LUN, select Properties on the LUN, and then change the "Default Owner" to the new SP. You will still need to run the trespass command to move the LUN, but now reports will show correctly.

One other caveat - depending on your OS and access method to the SAN you may need to do some work on host end to toggle which device you are using.

An example - if you are using HP-UX without PowerPath and only PV links you would need to change the device access ordering with LVM to control which path to the LUN is getting access. Ditto for VMWare. Other OSes that use PowerPath will co-operate with changing from the Clariion side

also need to make sure that the host HBAs are registered correctly and have their arraycommpath/failover settings set correctly as per host failover software being used on the host...

if this is not set correctly, the host may not be able to access the lun after its trespassed.

Clariion / VMware: VMware uses MRU, so tresspassing will work just fine I guess. The fixed setting isn't supported on Clariion, only on DMX

Thanks to all of you. That is easy enough. Will get back to you if something goes wrong