backup-push local storage requirement and backup-fetch download speed

[kapso]

• Does backup-push need any local/temp storage, even if the destination for the backup is S3 bucket? If that's the case is it possible to configure the path of this temp storage (lets say I would like to configure NFS for this). I will be taking a backup of a big database (TBs) and wanted to know if I need enough local/temp storage.

• How fast is backup-fetch -- let's say if I am fetching a backup of 20GB (backup file size), how much time would it take. Are there any published benchmarks?

Thanks a lot for your work on wal-e.

*One important caveat I forgot to add was that data & wal folders are mounted on separate disks (EBS volumes) and have enough space. But PostgreSQL is installed on a separate disk (root device) with limited space, so was wondering if that could be an issue for backup-push & backup-fetch