Change retention of existing archives with Vault v9.0.2
We've a Vault site (v9.0.2 for Exchange 2003 + 700 Vault users. Volume of archives ~1.9TB) with 6 retentions (3,6, 9 months and 1,3,5 years retention).
With EVPM, Vault is enabled and a specific folder is created with a 5 years retention. Users then drop items to this folder and witch requires 5 years retention.
Now, we must change retention of all items (new and existing items) from 5 to 10 years.
I'm trying to find the best (and quickest) way to update this items.
Solution 1: create a 10 years retention from Vault console. Then, user creates a folder (with 10 years retention applied) and move shortcuts from existing folder (where 5 years retention is applied) to this new folder. Retention will be updated at next shortcut processing.
But what about items already archived with 5 years retention AND with no corresponding shortcuts (deleted by user) ? Based on doc, user needs to restore from archive explorer (or search Vault) and rearchive at 10 years.
Solution 2: user changes retention applied on existing folder (from 5 to 10 years)
Advantage: this operation avoids user to move his shortcuts
But what about existing archives? As there's no move of shortcuts, I suppose retention of these existing archives will not be updated from 5 to 10 years.
Solution 3: From Vault console, change existing 5 years retention to 10 years.
Advantage: no intervention from user.
But what about existing archives? archives (with shortcuts AND no shortcuts) with 5 years retention will be reflagged with this new retention period? If reflagged, what will be the impact on Vault/Exchange as lots of users keep their shortcuts (Shortcut deletion not enabled from Vault console as not desired by client...).
I'll appreciate an advice.