I wrote a simple little perl script with automates the process of changing the serial numbers on the luns back to their pre-head upgrade serials, which you can find on the now site here: http://communities.netapp.com/docs/DOC-2369
There is also a vb script one here: http://communities.netapp.com/docs/DOC-1754
which I basically imitated when making my perl version.
Romeo
On Thu, Oct 29, 2009 at 12:58 PM, Raj Patel phigmov@gmail.com wrote:
Hi all,
We're planning to upgrade our controller (a 270c to a 2050ha) - my understanding is the iSCSI LUN's will retain their identity (ie the existing IQN strings will remain the same) however we will probably run into the ESX re-signaturing issue.
Is there a way to avoid this as part of the controller upgrade or do I need to go into each connected ESX host and change the value of LVM.EnableResignature to 1 ?
Are there any other potential 'gotchas' about an in-place head replacement ? The process itself looks fairly straightforward if all the steps are followed through in sequence.
Thanks in advance, Raj.