What technology, used by Dell EMC Unity XT Snapshots, is accurately described?
Copy on First Write requires a storage resource reserved to hold original data that changed to preserve the point-in-time view
Redirect on Write requires a storage resource reserved to hold original data that changed to preserve the point-in-time view
Redirect on write requires no storage resource to create a Snapshot, writes are redirected on parent pool
Copy on First Write requires no storage resource to create a Snapshot, writes are copied to parent pool
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