> [!ArchiveCommand] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_ipc_archivecommand.png"></td><td><b>Wait Category</b></td><td>IPC</td></tr><tr><td><b>Mechanism</b></td><td><code>archive_command</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Distributed/Redistribute">Redistribute</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/CPU">CPU</a>, <a href="Resources/Network">Network</a></td></tr><tr><td colspan="3"><b>External Log Durability Barrier</b>. For a Point-In-Time Recovery (PITR) strategy to be effective, every Write-Ahead Log segment must be safely copied to a secondary location (like S3 or a network mount) as soon as it is filled.</td></tr></table>