Which actions are initiated when a snapshot is created on an XtremIO array?

The correct answer is A. Parent object becomes read only and two auxiliary volumes are created. When a copy is created, the volume's existing metadata becomes an "ancestor" entity (parent object) that is shared between the production volume and the copy. New empty containers are created for subsequent changes to both the production volume and the virtual copy volume…

Implement XtremIO Data Services (Deduplication, Compression, Snapshots)

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Options

AParent object becomes read only and two auxiliary volumes are created
BParent object remains writeable and one auxiliary volume is created
CParent object remains writeable and two auxiliary volumes are created
DParent object becomes read only and one auxiliary volume is created

How the community answered

(25 responses)

A
80% (20)
B
4% (1)
C
12% (3)
D
4% (1)

Explanation

When a copy is created, the volume's existing metadata becomes an "ancestor" entity (parent object) that is shared between the production volume and the copy. New empty containers are created for subsequent changes to both the production volume and the virtual copy volume. Therefore, the act of creating a copy is instantaneous and involves no data or metadata copies. snapshots.pdf, pages 18

Topics

#snapshot creation#auxiliary volumes#parent volume read-only#snapshot internals

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