Product specifications
141
The basic drive-sharing architecture is illustrated in Figure 9-2.
Figure 9-2 Multichannel AirPlay MP SCSI Network for Sharing
Drives
When a channel records new material, the digitized video is stored on
the buffer drives for the channel. The system uploads the material to
the shared library of storage drives.
When a channel plays material, the system downloads the material
from the shared library to the playback channelÕs buffer. Each
playback channel examines its active playlist and determines the next
several events it needs to play. It then uses the time when it is not
playing to download the required events from the shared library to its
buffer. Because the system needs to download material for playback,
you cannot play back from a channel continuously for 24 hours.
Playback channel
Playback channel
Playback/record
Control channel
channel
Local drive
Shared library of storage drives
SCSI network
Local drive
Local drive
Local drive