You have a cluster of FAS controllers with HDD aggregates. The data is being compressed into 32 KB blocks
before being written to a volume.
In this scenario, which type of compression is being used?
A.
secondary, inline compression
B.
adaptive, inline compression
C.
adaptive, postprocess compression
D.
secondary, postprocess compression
Explanation:
NetApp data compression reduces the physical capacity required to store data on storage systems by
compressing data within a flexible volume (FlexVol volume) on primary, secondary, and archive storage. It
compresses regular files, virtual local disks, and LUNs.
When NetApp data compression is configured for inline operation, data is compressed in memory before it is
written to disk.
Incorrect Answers:
C, D: Postprocess compression can compress both recently written data and data that existed on disk prior to
enabling compression.
http://community.netapp.com/t5/Tech-OnTap-Articles/Back-to-Basics-Data-Compression/tap/86691
This is the correct URL
https://community.netapp.com/t5/Tech-OnTap-Articles/Back-to-Basics-Data-Compression/ta-p/86691
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For me, none of those answers are correct.
The correct response is Inline, and Postprocess. The 32KB is to throw you off.
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Correct answer is Adaptive, Inline compression
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Platform/aggregates Data ONTAP release Compression type
All Flash FAS Data ONTAP 8.3.1 Adaptive compression
All Flash FAS Data ONTAP 8.3.0 Secondary compression
Flash Pool aggregates Data ONTAP 8.3.1 Adaptive compression
Flash Pool aggregates Data ONTAP 8.3.0 Secondary compression
HDD aggregates Data ONTAP 8.3.1 Secondary compression
HDD aggregates Data ONTAP 8.3.0 Secondary compression
ao A is correct.
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