When a storage resource has a snapshot taken of it, where are writes to the storage resource written?
A. New space allocated from the storage resource parent pool
B. New space allocated in 256 MB stripes from FAST Cache
C. Existing space of the storage resource
D. Existing space from the Reserves LUN Pool
|
Download Printable PDF. VALID exam to help you PASS. |
 |
When a host attempts to overwrite the D block with new data, D’, the new data is written to a new location in the same storage pool and the LUN updates its pointer to D’.
I agree it is A.
Not really sure, but may be A.
Snapshots space are taken from parent pool not from the storage resource itself.
Immediately after being created, a snapshot consumes almost no space for the pool as it still shares all of its blocks with the primary block or file resource. However as new data is written to the parent resource, redirects occurs, and the snapshot begins to consume pool space that is not also associated with the current production version of the parent resource.