Upgrade host interface card

You upgrade a host interface card (HIC) to increase the number of host ports or to change host protocols.

About this task

Attention: Possible loss of data access – Never install a HIC in an EF300 or EF600 controller canister if that HIC was designed for another E-Series controller. In addition, both controllers and both HICs must be identical. The presence of incompatible or mismatched HICs causes the controllers to lock down when you apply power.