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476 Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1

Figure 9-27 shows an example of how the data is broken into fixed-size chunks (in the

upper-left side of the figure). It also shows how each chunk gets compressed independently

into variable length compressed chunks (in the upper-right side of the figure). The resulting

compressed chunks are stored sequentially in the compressed output.

Although this approach is an evolution from compression utilities, it is limited to

low-performance use cases. This limitation is mainly because it does not provide real random

access to the data.

Figure 9-27 Traditional data compression in storage systems

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