How to speed up the FDB restore process from s3?

I created a blobstore backup for FDB cluster containing 20 nodes to s3. The status of the cluster is like this:

I’ve tried to restore it to a similar new cluster using fdbrestore command:
fdbrestore start -r "blobstore://" -t test_restore --dest_cluster_file /etc/foundationdb/fdb.cluster

But it took around 17 hours to complete. Is this normal? How can I speed up the restore process?

For now, fdbrestore is a very slow process and cann’t be faster.

There is a project in progress Fast Restore that will speed up restoring twice.

But the fastest solutions ary hybrid: to combine very fast restoring from a cold snapshot with a slow, but short ponit-at-time incremental restore.