|------------------|-----------------------|
| 5 or fewer       |                 EC:2  |
| 6-7              |                 EC:3  |
| 8 or more        |                 EC:4  |

For more complete documentation on Erasure Set sizing, see the [MinIO Documentation on Erasure Sets](https://min.io/docs/minio/linux/operations/concepts/erasure-coding.html#erasure-sets).

### Allowed values for REDUCED_REDUNDANCY storage class

# Erasure code sizing guide

## Toy Setups

Capacity constrained environments, MinIO will work but not recommended for production.

| servers | drives (per node) | stripe_size | parity chosen (default) | tolerance for reads (servers) | tolerance for writes (servers) |
|--------:|------------------:|------------:|------------------------:|------------------------------:|-------------------------------:|

Refer to the sizing guide with details on the default parity count chosen for different erasure stripe sizes [here](https://github.com/minio/minio/blob/master/docs/distributed/SIZING.md)

MinIO places new objects in server pools based on proportionate free space, per pool. Following pseudo code demonstrates this behavior.

Refer to sizing guide for more understanding on default values chosen depending on your erasure stripe size [here](https://github.com/minio/minio/blob/master/docs/distributed/SIZING.md). Parity settings can be changed using [storage classes](https://github.com/minio/minio/tree/master/docs/erasure/storage-class).

## List of Amazon S3 API's not supported on MinIO