---
title: Capacity 
slug: citsmart-8-en/capacity
description: This document provides a comprehensive definition of capacity and capacity management in the IT industry. It explains how capacity is the maximum throughput of a configuration item or IT service, and capacity management is the process of ensuring that IT 
docTags: 
createdAt: 2022-01-19T22:48:33.000Z
---

## Presentation

According to ITIL, the capacity can be defined as "The maximum throughput that a
 configuration item or IT service can deliver. For some types of CIs, the
 capacity may be the size or the volume - for example, a disk drive".

The capacity management can be defined as "The process responsible for ensuring that IT service capabilities and IT infrastructure are able to meet agreed
 capacity and performance requirements in a timely and cost-effective manner.
 Capacity management considers all the resources needed to deliver an IT service
 and addresses the attendance of current and future capacity and performance
 needs of the business".