The data backup window has expanded into the morning hours and has begun to affect production users. The main bottleneck in the process is the time it takes to
replicate the backups to separate servers at the offsite data center. Which of the following uses of deduplication could be implemented to reduce the backup
window?
A.
Implement deduplication at the network level between the two locations
B.
Implement deduplication on the storage array to reduce the amount of drive space needed
C.
Implement deduplication on the server storage to reduce the data backed up
D.
Implement deduplication on both the local and remote servers
Please explain!
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This is tricky to me:
A would entail network deduplication, and network transfer is the bottleneck the question presents.
B would make sense if you were doing NAS backups or the initial backup was to disk, neither stated.
C makes sense, presuming you are deduplicating at the backup server or maybe file server.
D does not make sense, why would you deduplicate after transfer to address this issue?
I go with A, because its a straightforward network solution to a network problem.
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Hi. Hwo know here mix questions answers correct or not? Because i purchased dump one of the site all mix question difference from here
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I would go with C. Deduplicating the storage will reduce size and this is what gets replicated across
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A is the correct one. Imagine that you define 2separate network, one for backup and one for production, in this case the backup will not affect the production anymore
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On second thoughts I go with Sammie. A
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In effect, the bottleneck in is time related across the network to the offsite data center.
After a backup to a deduplicating storage is complete, the storage system performs storage-side deduplication. Usually this process works as follows: Data blocks are moved from the backup file to a special file — the deduplication data store — within the storage. Duplicate blocks are stored only once.
So in effect, deduplication always takes place at the “storage side” .
We must endeavour to perform deduplication BEFORE we send any data across the network.
So the best answer to my mind is C: Implement deduplication on the server storage to reduce the data backed up
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