Since the earliest versions of Exchange Server, the Information Store Integrity Checker (ISInteg) has offered Exchange administrators a way to check mailbox and public folder database integrity. I...
Updated Jul 01, 2019
Version 2.0
Blog Post
I'd say it's New-MailboxRepairRequest because it can fix individual mailboxes... which as the the blog post states, should be the much more common usage than ever having to repair an entire database (who does that nowadays anyway... people with no backups?)