Does Opero Fax have any backup system to ensure it does not crash when overloaded with faxes in queue?

The faxing process involves 3 platforms (Opero Fax to eFax then back to Salesforce) with each receiving faxes in different ways. So there are many ways to store data and not lose faxes should there be a system issue with one of them. Each platform buffers and queues the faxes so it helps to prevent system breakdown.