cloud-test: Announcing Limited Preview Of SSD persistent disk

Google Cloud Platform Blog

Announcing Limited Preview Of SSD persistent disk

Wednesday, June 18, 2014

Earlier this weekbest practices

You can run your databases and file servers on Google Cloud Platform faster than ever before and move ever more demanding applications into Google Cloud Platform.

You now have a simple and cost effective solution for handling small amounts of data that need high IO. When your application is I/O constrained, SSD persistent disk gives you up to 59% lower costs for read-heavy workloads, and up to 92% lower costs for write-heavy workloads.

This storage offering is targeted at highly transactional systems. Your MySQL, PostgreSQL, Mongo, Cassandra and Redis should work incredibly fast. But, this is not targeted at streaming large files sequentially. Use Standard persistent disk for bulk data or data that is read and written to in sequential streams and High IOPS PD for your heavily transactional storage with more random access.

High IOPS counts 16KB IOs and lower as 1 IO. Larger IO sizes will count as multiple IOs. For example, a 128KB IO will count as 8 IOs.

For larger volumes, VM IO capabilities will limit how much IO can be expected from the volume. VM limits today for the larger VMs are 10,000 read IOPS, 15,000 write IOPS, 180 MB/s read and 120 MB/s writes. These are numbers we are working hard to increase as we further optimize our infrastructure. Stay tuned for more here.