Hi @create share ,
The database size is more than 2TB now.
According to this official document, the supported database size is approximately 16 terabytes, so normally 2TB is not a real problem assuming that the disk space is sufficient.
Content index state: FailedAndSuspended
“Failed" or "FailedAndSuspended” database content index could be caused by vairous factors so it's hard to tell the reason directly. But in most occasions, we can run the command below to reseed the content index catalog and then check if state can return to healthy :
Get-MailboxDatabaseCopyStatus * | Where {$_.ContentIndexState -eq “FailedAndSuspended”} | Update-MailboxDatabaseCopy -CatalogOnly
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