The article talks about fio to warm the drive... That's basically fast snapshot restore[0]. This reduces the "first access" penalty for "dirty" blocks. This is

The article talks about fio to warm the drive... That's basically fast snapshot restore[0]. This reduces the "first access" penalty for "dirty" blocks. This is probably the slowest part of the entire article (it's about 10 seconds per dirty GB to fio the disk). [0]: https://docs.aws.amazon.com/ebs/latest/userguide/ebs-fast-snapshot-restore.html https://docs.aws.amazon.com/ebs/latest/userguide/ebs-fast-sn...