BS ISO 20217:2015定义了航天器机载接口服务（SOIS）文件和数据包存储 服务（FPS）。该定义包含了向用户公开的服务接口的规范 机载软件（用户应用程序和库）以及 FPSS是实现此类服务的协议的原语。SOIS文件和数据包存储服务供车载软件用于:访问和管理文件存储中的文件。驻留在文件存储中的文件 可以包含任何类型的数据，例如遥测、命令和 命令序列、软件更新、图像和其他科学观察。访问和管理驻留在数据包存储中的数据包。应该指出的是 数据包存储可能知道，也可能不知道，其操作可能会被告知，也可能不会被告知 通过，一个包的内容。为了实现这一点，FPS包括以下服务:文件访问服务（FAS）； 文件管理服务；分组存储接入服务（PSAS）；数据包存储管理服务（PSMS）。应该注意，SOIS文件和分组存储服务并不定义文件和分组 数据包存储它们自己，但只存储它们提供的最低服务。初始化和 文件和数据包存储的配置超出了本文档的范围。交叉引用:ISO/IEC 7498-1:1994购买本文件时，所有当前可用的修改件均包含在购买本文件中。

BS ISO 20217:2015 defines the Spacecraft Onboard Interface Services (SOIS) File and Packet Store Services (FPSS). The definition encompasses specification of the service interface exposed to onboard software (user applications and libraries) as well as the conceptual mapping of the FPSS primitives to the protocols implementing such services.The SOIS File and Packet Store Services are for use by onboard software to:Access, and manage files residing in a file store. The files residing in the file store could contain any type of data, including for example telemetry, commands and command sequences, software updates, imagery, and other science observations.Access and manage packets residing in a packet store. It should be noted that the packet store may or may not be aware of, and its actions may or may not be informed by, the contents of a packet.To achieve this, the FPSS comprise the following services:File Access Service (FAS);File Management Service (FMS);Packet Store Access Service (PSAS);Packet Store Management Service (PSMS).It should be noted that the SOIS File and Packet Store Services do NOT define the file and packet stores themselves, but only their minimum provided service. The initialization and configuration of the file and packet stores is out of scope for this document.Cross References:ISO/IEC 7498-1:1994All current amendments available at time of purchase are included with the purchase of this document.