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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

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<title>Sub Topic 2</title>
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<h1>Managing Bricks</h1>
Brick is the basic unit of storage, represented by an export directory
on a server in the storage cluster. You can expand, shrink, and migrate
volume of you cluster, as required, by adding new bricks, removing
bricks, and migrating bricks.
<p><b>Note:</b> You need to add at least one brick to a distributed
volume, multiples of two bricks to mirrored distributed volumes,
multiples of four bricks to striped distributed volumes when expanding
your storage space.</p>
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