Product specifications

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Although you can play events directly from the central shared library,
normally events are downloaded to local storage buffers for playback.
Using buffers with a shared library increases the reliability of the
system. When each channel plays material from its own buffer drives,
the demands placed on the shared library are reduced, the same event
can play on multiple playback channels, and there is no single point of
failure.
In the multichannel drive-sharing system, the Avid Media Processor
for each channel includes two SiliconExpress boards. One board is
connected to the buffer drives for the channel. The other board is
connected to the SCSI network that links the channel to the shared
library of storage drives.
Only the record channel has write-access to the shared library of
storage drives. The record channel uses the write-access privileges to
transfer newly recorded material from the record buffer to the shared
library. All the other channels have read-only access, which they use to
download material from the shared library to their buffers for
playback.
Write protection is set up by mounting the storage drive volumes on
each channel as read-only or read/write, based on a Þle installed in
each channelÕs system folder and initialization software that runs on
each Avid Media Processor at startup. Each channel periodically
updates its view of the shared Þle system, so any changes posted by
one channel are available to all channels.
Single-Ended and Differential SCSI Connections
All drives are linked to the Avid Media Processor using SCSI. SCSI is a
high-speed data interface between the Avid Media Processor and
attached devices.