Error "Found X packs in index but not appearing on disk. Reindex needed!"

The message indicates that X number of index files refer(s) to data chunks that cannot currently be found inside the Storage Vault.

Encrypted data chunks in the Storage Vaults are carefully curated and indexed. It is still possible for the index of data chunks can become mismatched with the actual chunks stored. This can happen:

• if a file was manually deleted from the Storage Vault, or
• if your storage platform experienced data loss for any reason (e.g. RAID failure), or
• if the Unlock action was used in an unsafe way, or
• if a retention pass went back in time (e.g. via VM snapshot resumption)

Solution 

• Toggle on Admin -> Advanced Options
• Accounts -> Users -> name -> Devices tab -> click 'Online' to open dialogue -> Storage Vault tab -> Reindex
• When done, Toggle off Admin -> Advanced Options
• Accounts -> Users -> name -> Devices tab -> click 'Online' to open dialogue -> Storage Vault tab -> Apply Retention Rules Now
• When done, Accounts -> Users -> name -> Actions -> View Job History -> 'Report' to view last job
• An absence of errors indicates the optimization pass found the missing data chunk(s) somewhere in the Storage Vault, and created a new index to reference them. The issue is solved.
• If errors, check documentation for solutions to the error message