HP XP P9500 Storage - Manual (Page 106)

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Before creating a pool, you need a THP V-VOL management area in shared memory. When
shared memory is added, the THP V-VOL management area is automatically created. For
adding shared memory, contact your HP representative.
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In RAID Manager, when creating a pool, you cannot enable Multi-Tier Pool and cannot register
multiple media as pool-VOLs. Before making tiers, enable Multi-Tier Pool.
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Enabling Multi-Tier Pool from RAID Manager automatically sets Tier Management to Manual.
To change Tier Management to Auto, you must do this in Remote Web Console.
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If you delete a pool, its pool-VOLs (LDEVs) will be blocked. If they are blocked, format them
before using them.
106 Configuring thin provisioning