In its recent quarterly conference call, Oracle said (as per the Seeking Alpha transcript):
AC Neilsen, for instance, we deployed a 45-terabyte data [mart], they called it; Adidas, 13 terabytes; Australian Bureau of Statistics, 250 terabytes; and of course, some of our high-end ones that you have probably heard of in the past, AT&T, 250 terabytes; Yahoo!, 700 terabytes — just gives you an idea of the size of the databases that are out there and how they are growing, and that’s driving the need for greater throughput.
I don’t know what’s being counted there, but I wouldn’t be surprised if those were legit user-data figures.
Some other notes:
- The Yahoo database is of course Yahoo’s first-generation data warehouse, which has been largely superseded by an internal system more than 10X that size. (Edit: Actually, Greg Rahn of Oracle says below that it’s a different database.)
- I’m keynoting the Netezza road show this month, and Nielsen is up there on stage touting Netezza. (Edit: Nielsen indeed does the overwhelming majority of its data warehousing on Netezza.)
- I’d be surprised if AT&T’s largest data warehouse were “only” 250 terabytes in size. (Edit: Actually, I am told the database in question is 310 TB of user data and growing. More later, hopefully.)
- Oracle didn’t exactly say that those were Exadata installations.