If you use File System Archiving then after you have upgraded the Enterprise Vault servers you must upgrade the FSA metadata in the vault store databases to the new summarized format. The summarized metadata enables Enterprise Vault Reporting to generate some of its reports more efficiently. Enterprise Vault Reporting cannot report on the FSA items that were archived with previous versions of Enterprise Vault until you upgrade the existing FSA metadata.
You can use the FSA upgrade utility command-line tool to upgrade the FSA metadata.
On upgrade to Enterprise Vault 9.0, Enterprise Vault generates the following warning messages if you need to use the FSA upgrade utility:
After a Directory service upgrade a warning message appears in the Administration Console's Status pane if FSA data is present. The message lists the affected Enterprise Vault servers, and the number of vault stores that require upgrade on each server. The warning message persists until you upgrade the FSA data in all of the affected vault stores.
After the upgrade of each vault store that contains FSA data, the Storage service generates a warning message in the Enterprise Vault Event log for that vault store.
For information about how to use the FSA upgrade utility, see the "FSA upgrade utility" section of the Utilities guide.