- Integral SDS is a new server-based architecture in Image Services 4.1.1 that provides native support for write-once-read-many (WORM) compliant storage devices. - It reuses robust processes from OSAR and MSAR and uses a plug-in model to support new storage devices. - Integral SDS provides benefits like increased stability, extensibility to new devices, improved high availability and disaster recovery, improved performance and scalability, and easier administration.