Which three statements are true regarding deduplication on the 7000-series systems?
A.
Checksum hashes are stored within the DDT (Deduplication Table).
B.
The DDT Is only stored within memory (ARC).
C.
Shares defined with smaller block sizes or database record sizes have a better chance of being
deduplicated, but conversely may result in the DDT filling up faster.
D.
There is no impact on performance for shares if the DDT fills up as deduplication is disabled in
that event.
E.
If the DDT fills up and spills into L2ARC or disk, performance can be severely degraded.
Explanation:
A:Data written with deduplication enabled is entered into the deduplication table
indexed by the
data checksum.Deduplication forces the use of the cryptographically strong SHA-256
checksum.Note:Data deduplication
Controls whether duplicate copies of data are eliminated.
Sun ZFS Storage 7000 System Administration Guide,Data deduplication