As per my understanding this will be offline activity. Not aware of any such guide where you can get details but some of the steps I can think of,
1> Backup data, Capture MSA log and Shutdown both 1GbE controller
2> Remove and replace both controllers with 10GbE
3> Re-enter system settings
4> Assign or rename port IQN host nicknames, if applicable
5> Re-enter Explicit Volume Mappings
6> Re-enter user information
7> Re-enter services information
8> Re-establish iSCSI connectivity and configure MPIO
Note: You need to use 10GbE HBA at the Server end as well as 10GbE supported Switch. The P2000 G3 10 GbE iSCSI MSA supports fiber optic cables with Short Range (SR) and Long Range Multi-mode (LRM) SFP+ transceivers
