Re: IBM Summit - 2.4x more storage nodes, 3.2x more NVMe Drives, 12.5x more memory, 5% faster
A few quick questions Barbara (nice video with HPE by the way):
1) does having flash based storage for data (not metadata) improve the result in the IO-500 test?
2) WekaIO seems to be a bit HCI like in terms of the "slider" diagram on your website - it actually infers that the software is running on the compute nodes. I can think of a number of potential downsides for that, but what ones aren't downsides that customers might think are?
3) Small file sizes are emphasised as being a challenge for some other HPC filesystems, but you design for the workload - if you're small and care about performance you go NVMe/SSD for metadata/bulk storage. If you care about performance, but you have to store a ton of stuff, cost effectively, you use NL-SAS for the bulk. Putting it another way, a motorbike doing 150 mph is impressive, but seeing an articulated truck doing 157 mph (within 5%) is even more impressive. They may have "X times" the hardware, but they're moving a lot more shit too.