Product manual

Galaxy G3G12 / G3G16 - Installation and Hardware Reference Manual
242 Section 7 Technology Background
7.12 Media Patrol
Media Patrol is a routine maintenance procedure that checks the magnetic media on each disk drive. Media
Patrol checks all physical drives assigned to disk arrays. Media Patrol does not check unconfigured drives.
Media Patrol will also check spare drives, if those drives have Media Patrol enabled. Media Patrol for spare
drives is enabled by default. You can disable it in Galaxy3G’s Command Line Interface (CLI).
Unlike Synchronization and Redundancy Check, Media Patrol is concerned with the condition of the media
itself, not the data recorded on the media. If Media Patrol encounters a critical error, it triggers PDM if PDM
is enabled.
You can run Media Patrol from the subsystem. See “Running Media Patrol” . You can also run Media Patrol
on a disk array. See “Running Media Patrol on a Disk Array”.