Because a version control system does not store each new version in its entirety, it requires less disk space for datastorage than a standard file system.
由于版本控制系统无需完整地存储每个新版本，因而用于数据存储的磁盘空间比标准文件系统要少。
2
Sitting on top of the datastorage, JCR offers content services like granular access control, versioning, content events, full-text search and filtering among others.
在数据存储之上，JCR提供诸如访问粒度控制、版本控制、内容事件、全文检索和过滤等内容服务。
3
The NAS device uses an internal operating system，which acts as a control mechanism for managing datastorage，semantics and control for reading and writing data onto its disks.