Address Space Manipulation Techniques

This section explores the address space manipulation techniques used in SAN virtualization and volume management. Among the topics covered are

  • The storage flat address space

  • Aggregation

  • Subdivision

  • Substitution

  • Mirroring

  • Private data areas and metadata

The Storage Flat Address Space

Storage (block) address spaces are referred to as “flat.” This means they have a simple one-dimensional structure with a beginning address, an ending address, and all other addresses in between, in order. There are no rows or columns or tuple address locations to figure out. Figure 12-8 represents a very simple 20-block storage address space.

Figure 12-8. A Simple, Flat, 20-Block Address Space
[View full size image]

Aggregation with ...

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