备份多合一指南系列白皮书（5）：数据的归档

An archive is different from a backup because the data may not be used for months, even years, but must be accessed quickly when needed. Traditional backup platforms are poorly suited for archival data storage, and users are relying on disk storage systems for a mix of performance and reliability. Files can be archived to any disk storage system, but content-addressed storage (CAS) technology has appeared to support archiving efforts.