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	Each Phabricator service has an array of clustering options that can be			Each Phabricator service has an array of clustering options that can be
	configured independently. Configuring a cluster is inherently complex, and this			configured independently. Configuring a cluster is inherently complex, and this
	is an advanced feature aimed at installs with large userbases and experienced			is an advanced feature aimed at installs with large userbases and experienced
	operations personnel who need this high degree of flexibility.			operations personnel who need this high degree of flexibility.

	The remainder of this document summarizes how to add redundancy to each			The remainder of this document summarizes how to add redundancy to each
	service and where your efforts are likely to have the greatest impact.			service and where your efforts are likely to have the greatest impact.


	Cluster: Databases			Cluster: Databases
	=================			=================

	Configuring multiple database hosts is moderately complex, but normally has the			Configuring multiple database hosts is moderately complex, but normally has the
	highest impact on availability and resistance to data loss. This is usually the			highest impact on availability and resistance to data loss. This is usually the
	most important service to make redundant if your focus is on availability and			most important service to make redundant if your focus is on availability and
	disaster recovery.			disaster recovery.

	Configuring replicas allows Phabricator to run in read-only mode if you lose			Configuring replicas allows Phabricator to run in read-only mode if you lose
	the master, and to quickly promote the replica as a replacement.			the master, and to quickly promote the replica as a replacement.

	For details, see @{article:Cluster: Databases}.			For details, see @{article:Cluster: Databases}.


				Cluster: Repositories
				=====================

				Configuring multiple repository hosts is complex.

				Repository replicas are important for availability if you host repositories
				on Phabricator, but less important if you host repositories elsewhere
				(instead, you should focus on making that service more available).

				The distributed nature of Git and Mercurial tend to mean that they are
				naturally somewhat resistant to data loss: every clone of a repository includes
				the entire history.

				For details, see @{article:Cluster: Repositories}.
				chadUnsubmitted Not Done Inline Actions does this need to match the actual tite? If so should be "Cluster: Repository" chad: does this need to match the actual tite? If so should be "Cluster: Repository"