MULTIMEDIA STORAGE
SERVER ARCHITECTURES
-
each storage node provides a large amount of storage in one
or more forms
-
storage system formed by all storage nodes can be homogeneous
or hierarchical
-
resource management functions, supported by storage
nodes:
-
file system support: the node performs typical file system
functions
-
admission control: the node keeps track of usage of local
resources and performs local admission control
-
scheduling support: the node manages scheduling of data reads/writes
-
storage node architecture (fig. 10-7)
-
similar to that of a system as a Pentium PC
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consists of
-
a disk array: used to store the multimedia data
-
a VRAM: memory that caches required data before transmission
-
a CPU: issues control commands for prefetching and transmission
of data
