The largest I2 instance, called i2.8xlarge,
will deliver 350,000 random read Iops and 320,000 random write Iops.
Google says that after today's update, Cloud SQL will feature throughput rates that are up to seven times faster than the earlier version, and the service will be able to scale to up to 10TB of data,
15,000 Iops, and 104GB of RAM per instance-
numbers the first version couldn't reach.