Hp XP RAID Manager Software Manual do Utilizador descarregar pdf (Página 8)

The following figure shows how the V-VOL maintains the point-in-time data when you split the pair.

The following image shows how the V-VOL maintains point-in-time data when you split the pair.

Data pools

When you replace data in the P-VOL, the data pool holds the data. After you split a pair, the

V-VOL maintains pointers to point-in-time data. If updates are written to the P-VOL before you update

the block, the data that is being replaced is first copied to the data pool. The V-VOL pointer to this

block is updated to the new address in the data pool. All pairs sharing the same P-VOL use a data

pool.

8 Overview of Business Copy/Snapshot

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Hp XP RAID Manager Software Manual do Utilizador Página 8