What's amazing is that 3 terabyes costs about $300 nowadays. Include good components, power, redundancy, maintenance, and it probably comes to $1,000 per year.
So this feature is actually pretty cheap to do, unless I'm missing something.
So this feature is actually pretty cheap to do, unless I'm missing something.
I have the same sort of weird mental disconnect with SD cards. It's just hard to fathom 32GB of data fitting into something about the size of a quarter.
A _lot_. :)
To put it in perspective, 100GB is pretty much the limit of what you can serve from a single mysql machine, for instance. This will vary depending on exact workload but that is a reasonable ball park number.
330GB per machine for Facebook's Cassandra cluster.