diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index a63cfe6..874f51e 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -73,27 +73,28 @@ class Configuration implements ConfigurationInterface
                 ->arrayNode('clients')
                     ->useAttributeAsKey('id')
                     ->prototype('array')
-                        ->performNoDeepMerging()
+                        // BC - Renaming 'servers' node to 'connections'
                         ->beforeNormalization()
-                            ->ifTrue(function($v) { return (isset($v['host']) && isset($v['port'])) || isset($v['url']); })
-                            ->then(function($v) {
-                                return array(
-                                    'servers' => array(
-                                        array(
-                                            'host' => isset($v['host']) ? $v['host'] : null,
-                                            'port' => isset($v['port']) ? $v['port'] : null,
-                                            'url' => isset($v['url']) ? $v['url'] : null,
-                                            'logger' => isset($v['logger']) ? $v['logger'] : null,
-                                            'headers' => isset($v['headers']) ? $v['headers'] : null,
-                                            'timeout' => isset($v['timeout']) ? $v['timeout'] : null,
-                                            'transport' => isset($v['transport']) ? $v['transport'] : null,
-                                        )
-                                    )
-                                );
-                            })
+                        ->ifTrue(function($v) { return isset($v['servers']); })
+                        ->then(function($v) {
+                            $v['connections'] = $v['servers'];
+                            unset($v['servers']);
+
+                            return $v;
+                        })
+                        ->end()
+                        // If there is no connections array key defined, assume a single connection.
+                        ->beforeNormalization()
+                        ->ifTrue(function ($v) { return is_array($v) && !array_key_exists('connections', $v); })
+                        ->then(function ($v) {
+                            return array(
+                                'connections' => array($v)
+                            );
+                        })
                         ->end()
                         ->children()
-                            ->arrayNode('servers')
+                            ->arrayNode('connections')
+                                ->requiresAtLeastOneElement()
                                 ->prototype('array')
                                     ->fixXmlConfig('header')
                                     ->children()
diff --git a/DependencyInjection/FOSElasticaExtension.php b/DependencyInjection/FOSElasticaExtension.php
index 9862076..292a9a5 100644
--- a/DependencyInjection/FOSElasticaExtension.php
+++ b/DependencyInjection/FOSElasticaExtension.php
@@ -104,7 +104,7 @@ class FOSElasticaExtension extends Extension
             $clientDef = new DefinitionDecorator('fos_elastica.client_prototype');
             $clientDef->replaceArgument(0, $clientConfig);
 
-            $logger = $clientConfig['servers'][0]['logger'];
+            $logger = $clientConfig['connections'][0]['logger'];
             if (false !== $logger) {
                 $clientDef->addMethodCall('setLogger', array(new Reference($logger)));
             }
diff --git a/Resources/doc/cookbook/multiple-connections.md b/Resources/doc/cookbook/multiple-connections.md
new file mode 100644
index 0000000..7b5226c
--- /dev/null
+++ b/Resources/doc/cookbook/multiple-connections.md
@@ -0,0 +1,16 @@
+Multiple Connections
+====================
+
+You can define multiple endpoints for an Elastica client by specifying them as
+multiple connections in the client configuration:
+
+```yaml
+fos_elastica:
+    clients:
+        default:
+            connections:
+                - url: http://es1.example.net:9200
+                - url: http://es2.example.net:9200
+```
+
+For more information on Elastica clustering see http://elastica.io/getting-started/installation.html#section-connect-cluster
diff --git a/Resources/doc/index.md b/Resources/doc/index.md
index 1bc093e..80a500c 100644
--- a/Resources/doc/index.md
+++ b/Resources/doc/index.md
@@ -15,4 +15,6 @@ Cookbook Entries
 * [Custom Repositories](cookbook/custom-repositories.md)
 * [HTTP Headers for Elastica](cookbook/elastica-client-http-headers.md)
 * Performance - [Logging](cookbook/logging.md)
+* [Manual Providers](cookbook/manual-provider.md)
+* [Clustering - Multiple Connections](cookbook/multiple-connections.md)
 * [Suppressing server errors](cookbook/suppress-server-errors.md)
diff --git a/Tests/DependencyInjection/ConfigurationTest.php b/Tests/DependencyInjection/ConfigurationTest.php
index b474117..7165052 100644
--- a/Tests/DependencyInjection/ConfigurationTest.php
+++ b/Tests/DependencyInjection/ConfigurationTest.php
@@ -46,7 +46,7 @@ class ConfigurationTest extends \PHPUnit_Framework_TestCase
                     'url' => 'http://localhost:9200',
                 ),
                 'clustered' => array(
-                    'servers' => array(
+                    'connections' => array(
                         array(
                             'url' => 'http://es1:9200',
                             'headers' => array(
@@ -65,13 +65,13 @@ class ConfigurationTest extends \PHPUnit_Framework_TestCase
         ));
 
         $this->assertCount(2, $configuration['clients']);
-        $this->assertCount(1, $configuration['clients']['default']['servers']);
-        $this->assertCount(0, $configuration['clients']['default']['servers'][0]['headers']);
+        $this->assertCount(1, $configuration['clients']['default']['connections']);
+        $this->assertCount(0, $configuration['clients']['default']['connections'][0]['headers']);
 
-        $this->assertCount(2, $configuration['clients']['clustered']['servers']);
-        $this->assertEquals('http://es2:9200/', $configuration['clients']['clustered']['servers'][1]['url']);
-        $this->assertCount(1, $configuration['clients']['clustered']['servers'][1]['headers']);
-        $this->assertEquals('Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==', $configuration['clients']['clustered']['servers'][0]['headers'][0]);
+        $this->assertCount(2, $configuration['clients']['clustered']['connections']);
+        $this->assertEquals('http://es2:9200/', $configuration['clients']['clustered']['connections'][1]['url']);
+        $this->assertCount(1, $configuration['clients']['clustered']['connections'][1]['headers']);
+        $this->assertEquals('Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==', $configuration['clients']['clustered']['connections'][0]['headers'][0]);
     }
 
     public function testLogging()
@@ -98,10 +98,10 @@ class ConfigurationTest extends \PHPUnit_Framework_TestCase
 
         $this->assertCount(4, $configuration['clients']);
 
-        $this->assertEquals('fos_elastica.logger', $configuration['clients']['logging_enabled']['servers'][0]['logger']);
-        $this->assertFalse($configuration['clients']['logging_disabled']['servers'][0]['logger']);
-        $this->assertEquals('fos_elastica.logger', $configuration['clients']['logging_not_mentioned']['servers'][0]['logger']);
-        $this->assertEquals('custom.service', $configuration['clients']['logging_custom']['servers'][0]['logger']);
+        $this->assertEquals('fos_elastica.logger', $configuration['clients']['logging_enabled']['connections'][0]['logger']);
+        $this->assertFalse($configuration['clients']['logging_disabled']['connections'][0]['logger']);
+        $this->assertEquals('fos_elastica.logger', $configuration['clients']['logging_not_mentioned']['connections'][0]['logger']);
+        $this->assertEquals('custom.service', $configuration['clients']['logging_custom']['connections'][0]['logger']);
     }
 
     public function testSlashIsAddedAtTheEndOfServerUrl()
@@ -113,7 +113,7 @@ class ConfigurationTest extends \PHPUnit_Framework_TestCase
         );
         $configuration = $this->getConfigs($config);
 
-        $this->assertEquals('http://www.github.com/', $configuration['clients']['default']['servers'][0]['url']);
+        $this->assertEquals('http://www.github.com/', $configuration['clients']['default']['connections'][0]['url']);
     }
 
     public function testTypeConfig()
@@ -172,7 +172,7 @@ class ConfigurationTest extends \PHPUnit_Framework_TestCase
             )
         ));
 
-        $this->assertTrue(empty($configuration['clients']['default']['servers'][0]['url']));
+        $this->assertTrue(empty($configuration['clients']['default']['connections'][0]['url']));
     }
 
     public function testMappingsRenamedToProperties()
diff --git a/Tests/Functional/app/Basic/config.yml b/Tests/Functional/app/Basic/config.yml
index beb0ded..e880fb1 100644
--- a/Tests/Functional/app/Basic/config.yml
+++ b/Tests/Functional/app/Basic/config.yml
@@ -11,6 +11,11 @@ twig:
 fos_elastica:
     clients:
         default:
+            connections:
+                - url: http://localhost:9200
+                - host: localhost
+                  port: 9200
+        second_server:
             url: http://localhost:9200
     indexes:
         index: