ERD - Emergency Repair Disk

ERD - Entry Relationship Diagram

ERDM - Enhance Required Data Model

EREW - Exclusive Read Exclusive Write

ERIC - Educational Resources Information Center

ERLL - Enhanced Run Length Limited

ERMA - "Electronic Recording Method

ERO - Echo Remote Object

EROM - Erasable Read Only Memory

EROS - Earth Resources Observation System

ERRL - Enhanced Run Length Limited

ERT - External Reference Table

ERU - Emergency Recovery Utility

ES - Extra Segment

ES - Exchange Server

ES - Embedded System

ES-IS - End System to Intermediate System protocol

ESA - Enterprise Systems Architecture

ESA - European Space Agency

ESAS - Enterprise Strategic Advisee System

ESC - EISA System Component

ESC/P - Epson Standard Code for Printers

ESCE - Expert - System - Consultation Environment

ESCM - Extended Services Communications Manager

ESCON - Enterprise System Connection