Host interface card overview

You can add, upgrade, or replace a HIC in the following controller shelves:

The steps to replace a HIC depend on whether you have one or two controllers, as follows:
If your storage array has... You must...
One controller (E2812 or E2824 simplex)
  1. Stop host I/O operations
  2. Power down the controller shelf
  3. Remove the controller canister
  4. Replace the battery
  5. Replace the controller canister
  6. Apply power to the controller shelf
Two controllers (E2860, E2812 or E2824 duplex)
  1. Take the controller offline
  2. Remove the controller canister
  3. Replace the battery
  4. Replace the controller canister
  5. Bring the controller online