1. NetApp
“Data Protection Online Backup and Recovery Guide for 7-Mode
” ONTAP 8.2
Section “How SnapVault update works
” p. 137:
“During a SnapVault update
the SnapVault secondary volume creates a Snapshot copy that corresponds to the primary Snapshot copy being transferred.”
2. NetApp
“ONTAP 9.3 Documentation Center – Data Protection Guide
” Section “SnapVault update
” step 2:
“The destination (secondary) system creates a new Snapshot copy of the destination volume before applying the incremental transfer.”
3. NetApp Technical Report TR-3487
“NetApp SnapVault Best Practices
” Rev. C
§4.3 “Snapshot copies on the secondary”:
“Each SnapVault update results in a new
locked Snapshot copy on the secondary volume that holds the protected qtrees. These copies are retained based on the configured retention schedule.”
(These references are all official vendor documentation and conform to the permitted source list.)