i3en.6xlarge is AWS's storage-optimized EC2 size at 24 vCPU and 192 GiB. In the name, "i" is I/O, meaning local storage, "3" is the generation, "en" marks extended capacity and enhanced networking and "6xlarge" is the size within the i3en family. It runs on Intel Xeon Platinum 8175 at 3.1 GHz, and AWS introduced it in May 2019. AWS has since shipped i4i, i7i and i8g; i7ie.6xlarge is the direct replacement at this size, scoring 646,726 CoreMark/s against this instance's 355,626 — roughly 82% more throughput for the same vCPU count. The closest Spot shape is mh.vs1.2xlarge at 16 vCPU, so this instance maps to 2 of them — 32 vCPU and 256 GiB across the fleet, $2.71/hr on AWS in US East (N. Virginia), from $0.042/hr on Rackspace Spot. Spot delivers compute as managed Kubernetes, so a node pool of that size is the native shape of the answer rather than a workaround — provided the workload scales horizontally.
| Region | AWS on-demand | AWS Spot | 1-yr Reserved | 3-yr Reserved | Rackspace Spot | You save |
|---|---|---|---|---|---|---|
| US East, N. Virginia | $2.712 | $1.009 | $1.847 | $1.180 | $0.042 | $2.670 savings |
| US Central, Chicago | no AWS region | $0.042 | ||||
| US Central, Dallas | no AWS region | $0.262 | ||||
| Hong Kong | $3.580 | $2.448 | $1.558 | $0.042 | $3.538 savings | |
| Sydney, Australia | $3.252 | $0.584 | $2.224 | $1.416 | $0.042 | $3.210 savings |
| London, UK | $3.156 | $0.408 | $2.158 | $1.372 | $0.262 | $2.894 savings |
| US West, San Jose | $3.000 | $0.326 | $2.049 | $1.304 | $0.003 | $2.997 savings |
| US Central, Dallas 2 | no AWS region | $0.363 |