【IT168 技术】存储分层是信息技术服务的一项重要策略。但是，分层并不是信息生命周期管理。很多人将两者混淆了。该白皮书探讨了分层存储是信息生命周期策略的一个重要组成部分，但并不是全部。分层存储是我们安排存储保存的方法。在分层的情况下，我们利用信息生命周期管理来根据长期需求管理存储库。信息生命周期管理以自动化的方式，从数据生成到数据删除，将业务需求和业务流程与服务等级需求结合起来。

　　Tiering of storage is an important strategy for Information Technology (IT) services. Yet, tiering is not ILM. It is common to see the two confused. This paper will discuss how tiering storage is an important component of an ILM practice, but not everything. Tiered storage is how we arrange storage repositories. In a tiering context, ILM is how we manage the repositories based on the requirements over time. ILM aligns the business requirements and business processes with the service level requirements, in an automated fashion, from data creation to data deletion.