Some times when people are moving to AWS for their databases they are looking for load times in the range of 2 TB per hour (this is 650+ MB/second).
1. Green Plum : http://www.emc.com/collateral/hardware/data-sheet/h7419-greenplum-dca-ds.pdf : 10 TB to 60 TB per hour claimed in this document.
2. Exadata : http://www.oracle.com/ocom/groups/public/@otn/documents/webcontent/173705.pdf Data Load Rate: Up to 12 TB/hour
Numbers listed in this book: http://books.google.com/books?id=Whx9nldv8UEC&pg=PA102&lpg=PA102&dq=oracle+database+loads+terabytes+per+hour&source=bl&ots=VEXelUIhd2&sig=9LW4T0PgottDF2kpgvUobd2FonQ&hl=en&sa=X&ei=PHjyUcPKMuKbygHuyIDgBg&ved=0CHkQ6AEwBw#v=onepage&q=oracle%20database%20loads%20terabytes%20per%20hour&f=false
Of course, Greenplum and Exadata are significant monetary investments.
Paraccel claims to achieve 2 TB an hour: http://www.paraccel.com/resources/Analyst-Reports/TDWI_Checklist-Report_Analytic-Databases-for-Big-Data.pdf