Exam DES-1D12 topic 1 question 29 discussion

Deduplication uses algorithms to analyze, perform pattern detection, and attempts to store only a single instance of data. In general deduplication can work at the block, bit-level, or file level. In PowerStore, deduplication works at the block level at 4 KB granularity.

From Dell EMC PowerStore: Data Efficiencies H18151.3 : "If a pattern was not found, the data is passed through the deduplication algorithm. This algorithm first creates a fingerprint for each 4 KB block of data within the resource using a hashing algorithm. Once created the fingerprint is compared to other fingerprints which represent data within the PowerStore single deduplication domain. The deduplication domain allows data for any resource within the appliance to deduplicate. If a match is found, the physical storage is single instanced. If a match is not found, the data is compressed and placed into a full stripe write to be written to the system."

8k in the case of unity and 4k in the case of the powerstore

How many hierarchical snapshots are supported by a Dell EMC PowerStore 9000X array? 10 levels deep for LUNs 10 levels deep for file systems 32 levels deep for LUNs 16 levels deep for file systems 16 levels deep for LUNs 16 levels deep for file systems 0 levels deep for LUNs 0 levels deep for file systems

4 KB is correct answer

A is correct -4Kb

A is Correct!

Deduplication uses algorithms to analyze, perform pattern detection, and attempts to store only a single instance of data. In general deduplication can work at the block, bit-level, or file level. In PowerStore, deduplication works at the block level at 4 KB granularity. 4KB is the correct answer...

You can check here: https://youtu.be/jk1heTCUHRI?t=4108 1:08:28 Answer is: A - 4KB

Where are you getting these answers? i searched both references and i don't see it.

A is correct

A https://www.delltechnologies.com/resources/en-us/asset/white-papers/products/storage/h18151-dell-emc-powerstore-data-efficiencies.pdf