Is there any variation between the performance of S3 as primary and S3 as external ?
Why S3 as primary is chargeable and only available in enterprise?
Is there any drawback if i used S3 as external to all the file transaction inside s3 external storage ?
1) But I have to say, it is logic that internal storage has got better performance than external. Data have to go a longer way with an external storage.
2) Enterprise customers receive additional support. We want to have working ownCloud systems. You need some knowledge about s3, if you want to have it as primary.
3) What do you mean with this question? You can copy/ import data from one storage to another one. The same is with different S3 storages. Is that the solution?