all LUNs will trespass to the other SP, NS-G2 will log errors but that will not interrupt user access.
For the reset of the SP, Do you have some special considerations? because this Clariion is connected to a NS-G2 as a gateway. 
A NAS NS-G2 is connected to the CX3-40 as a gateway. I have to restart SP A to 
resolve a issue.