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>6.1. When to add a segment manager</H1
><P
>Adding a segment manager to a disk allows the disk to be subdivided into
smaller storage objects called disk segments. The
<B
CLASS="command"
>add</B
> command causes a
segment manager to create appropriate metadata and expose freespace
that the segment manager
finds on the disk. You need to add segment managers when you
have a new disk or
when you are switching from one partitioning scheme to another. </P
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>EVMS displays disk segments as the following types: </P
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>Data: a set of contiguous sectors that has been allocated
from a disk and can be used to construct a volume or object.</P
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>Freespace: a set of contiguous sectors that are unallocated
or not in use. Freespace can be used to create a segment.</P
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>Metadata: a set of contiguous sectors that contain
information needed by the segment manager.</P
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