4.3. Evaluation

We evaluated techniques described in this chapter using a trace driven simulation study. This trace was generated synthetically using a Poisson arrival pattern. In all simulations presented in this section, we assumed a single media type with 4 Mb/s bandwidth requirement and a block size of 0.5 Mbytes (Tp = 1 second). Blocks were distributed across twenty Quantum Atlas XP32150 disks using random. Our repository consisted of 50 different edited clips each consisting of 120 logical blocks. We assumed a uniform distribution of access to the clips.

All results demonstrate that the hiccup probability decreases as a function of N (number of buffers), see Figure 4.5.a. For example, we can reduce the hiccup probability to less than one ...

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