storage efficiency mode of ONTAP volume is always "efficient" on AFF A1K, A70, A90, and C80

Applies to

• ONTAP 9.15.1 and later
• AFF A1K
• AFF A70
• AFF A90
• AFF C80

Issue

Although default is set or no value is explicitly specified for storage-efficiency-mode when creating a volume, efficient is set automatically.

Example:

cluster1::> volume create -volume vol1 -vserver svm1 -aggregate cluster1_01_SSD_1 -size 10GB -storage-efficiency-mode default
[Job 98] Job succeeded: Successful

cluster1::> volume efficiency show -vserver svm1 -volume vol1 -fields storage-efficiency-mode
vserver volume storage-efficiency-mode
------- ------ -----------------------
svm1    vol1   efficient