VIM Modules are not hot-swappable as described in the Summit Family Hardware Install Guide
. This is specifically discussed in several areas of the "Replacing Port Option Cards and VIMs" section, one of which is quoted below.
"Summit VIMs are not hot-swappable. Disconnect power to the switch before removing an installed VIM. After a VIM is installed in a compatible switch, you can hot-swap the installed SFP, SFP+, and QSFP+ modules. Use only SFP, SFP+, and QSFP+ modules approved by Extreme Networks."