At '%8' the copy of database '%1' on this server encountered a serious I/O error that may have affected all copies of the ...

At '%8' the copy of database '%1' on this server encountered a serious I/O error that may have affected all copies of the database. The error returned by Suspend-MailboxDatabaseCopy was "%7". Consult the event log on the server for other "ExchangeStoreDb" or "msexchangerepl" events for more specific information about the failure. All data should be immediately moved out of this database.