Servicing the Energy Storage Module and Cables (CRU)
This section describes how to service the Energy Storage Module (ESM) and ESM extension cable that is located inside the system module (SMOD). The ESM provides emergency power for the SAS drives. The following topics and procedures provide information to assist you when removing and installing the ESM and ESM extension cable:
ESM and ESM extension cables are field-replaceable units (CRUs). For more information about CRUs, see Illustrated Parts Breakdown and Customer-Replaceable Units. For component serviceability, locations, and designations, see Replaceable Components. See System Module (SMOD) Overview.
 | Caution - These procedures require that you handle components that are sensitive to electrostatic discharge. This sensitivity can cause the components to fail. To avoid damage, ensure that you follow antistatic practices as described in Electrostatic Discharge and Static Prevention Measures. |