When SIDL is enabled on data aggregates, enabling inline dedupe or compression will cause performance issues since CPU cycles needed for SIDL. SIDL is enabled for increase of write performance by skip...When SIDL is enabled on data aggregates, enabling inline dedupe or compression will cause performance issues since CPU cycles needed for SIDL. SIDL is enabled for increase of write performance by skipping NVRAM and writing data only once onto disk directly. To check the SIDL status, from Cluster CLI run command aggregate show -aggregate <<aggregate_name> and check the Enable SIDL key Enable SIDL: on Amount of Shared bytes count by Storage Efficiency: 0B Enable Aggregate level Encryption: false