I have two nodes set up, geographically 3-4,000 KMs away (200ms).
Node 1 (3 x 1.92GB SSD) scores great IOPS testing using FIO, around 470,000 for sequential reads, and around 2000MB/s. For random read/write, around 2500 IOPS, and 10MB/s.
Node 2 (2 x 480GB SSD) scores great IOPS testing using...