Prior to this the default way to take a snapshot was to use the delayed ledger. However recent events has revealed delayed ledgers lagging too far behind and delayed ledger corruption. In the time since the delayed ledger was added the chain has switched to using rocksdb snapshots/checkpoints which offer a more reliable and less vulnerable to corruption source for snapshot data.
Prior to this the default way to take a snapshot was to use the delayed ledger. However recent events has revealed delayed ledgers lagging too far behind and delayed ledger corruption. In the time since the delayed ledger was added the chain has switched to using rocksdb snapshots/checkpoints which offer a more reliable and less vulnerable to corruption source for snapshot data.