An organization has been collecting a large amount of redundant and unusable data and filling up the storage area network (SAN). Management has requested the identification of a solution that will address ongoing storage problems. Which is the BEST technical solution?
The best technical solution to address the problem of collecting redundant and unusable data in a storage area network (SAN) is deduplication. Deduplication is a process that eliminates duplicate copies of repeating data, which directly tackles the issue of data redundancy. By identifying and removing duplicate data blocks, deduplication reduces the amount of data stored, thereby freeing up storage space. This is particularly effective in scenarios where large amounts of data redundancy are present, such as with backups and archives. Hence, deduplication is the most appropriate solution to the ongoing storage problems described.
The question doesn't say the data is full of duplications (copies), only that it is redundant (unneeded) and unusable. So deduplication might have zero effect if there are no copies. I choose A.
I think the word "redundant" here is referring to data redundancy, i.e. duplication of the data in case of corruption or loss. It is not referring to the data being unneeded. Therefore answer would be D.
And what does "unusable" mean?
D is correct
D is the only answer choice that makes sense with the excess data
A, the reason is that deduplication is NOT secure. "In some instances, a SAN may implement deduplication in order to save space by not retaining multiple copies of the same file. However, this can sometimes result in data loss if the one retained original is corrupted." - (ISC)2 CISSP Certified Information Systems Security Professional Official Study Guide, 9th Edition, Chapter 11 - Converged Protocols - Storage Area Network (SAN)
Compression (option A) reduces the size of data by encoding it in a more compact form, but it may not effectively address the issue of redundant data. It's D
Answer A) Compression will address ALL data stored on SAN. I thought D at first too...but we don't know how much of the data is actually duplicated....it may only be 1% of all of the data and won't make a difference compared to compression of ALL of the data.
D is the answer. It's Deduplication. Deduplication refers to a method of eliminating a dataset's redundant data. In a secure data deduplication process, a deduplication assessment tool identifies extra copies of data and deletes them, so a single instance can then be stored. Data deduplication software analyzes data to identify duplicate byte patterns.
D is right
D, as question states large amount of redundant data, hence deduplication.
D is the answer. Although both A and D answer look similar. This is simple explanation for both answers. A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage. deduplication commonly occurs at the block level; however, compression generally occurs at the file level. Now the difference is that deduplication occurs at the block level according to the question while compression occurs at the file level. so answer is Deduplication.
I say the answer is A. The question isn't talking about getting rid of the data, and 9 times out of 10, no one is going to go through large amounts of data to see what's a duplicate. Not to mention, you wouldn't know what to keep or delete. A "Compression" is the simplest answer.
Deduplication is effective in organizations that have a lot of redundant data, such as backup systems that have several versions of the same file. Compression is effective in decreasing the size of unique files, such as images, videos, and databases
Deduplication is effective in organizations that have a lot of redundant data, such as backup systems that have several versions of the same file. Compression is effective in decreasing the size of unique files, such as images, videos, and databases
D is pretty much the "text book" answer for this question.
Deduplication doesnt address unusable data.. so it has to be compression, A
and "redundant" can also mean "unnecessary" as well as "duplicate"
Agreed, question says nothing about the data being suitable for dedup, has to be compression.
D is the best answer Deduplication is the best solution for managing excess data, even if it's not just duplicates. It helps remove redundant and unneeded data efficiently.
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