IBM Summit - 2.4x more storage nodes, 3.2x more NVMe Drives, 12.5x more memory, 5% faster
I agree with Anonymous coward #1, we need to have more transparency in the systems used so you can get a side by side cost estimate. Anonymous coward #2, you are partially correct, each node has both HDD and NVMe drives. According to IBM's literature the Summit Storage System Configuration is utilizing 2 NVMe drives in every enclosure in the storage configuration. It was a bit of a mystery hunt to find the system specification but here is a link to the IBM sponsored paper that outlines its build. I have taken that data and put is side by side with WekaIO and I encourage you to check it out because the paper talks extensively about how they are using NVMe to improve small file I/O performance. Page 6 outlines the storage node build. They have 77 storage nodes total compared to WekaIO's 32 node system.
IBM Summit number of nodes 77, WekaIO 32 (2.4x more nodes used by IBM)
IBM Summit memory per node 1,000GB, WekaIO 192 (5.2x more memory per node use by IBM)
****** Total IBM cluster memory used 77TB, WekaIO 6.14TB (12.5x more memory overall used by IBM)
IBM Summit NVMe drives per node 8 (2 per enclosure x 4 enclosures per node), WekaIO 6 (1.3x more NVMe used by IBM)
****** Total IBM cluster NVMe drives used 616, WekaIO 192 (3.2x more NVMe used by IBM)