diff --git a/doc/guide/dhcp4-srv.xml b/doc/guide/dhcp4-srv.xml
index 858d97b1bf..020902de84 100644
--- a/doc/guide/dhcp4-srv.xml
+++ b/doc/guide/dhcp4-srv.xml
@@ -496,7 +496,9 @@ the lease database after connectivity has been lost may be specified:
 If the server is unable to reconnect to the database after making the maximum number
 of attempts the server will exit. A value of zero (the default) disables automatic
 recovery and the server will exit immediately upon detecting a loss of connectivity
-(MySQL and Postgres only).
+(MySQL and Postgres only). For Cassandra, Kea uses Cassandra interface that
+connects to all nodes in a cluster at the same time. Any connectivity
+issues should be handled by internal Cassandra mechanisms.
   </para>
   <para>
 The number of milliseconds the server will wait between attempts to reconnect to the
diff --git a/doc/guide/dhcp6-srv.xml b/doc/guide/dhcp6-srv.xml
index c31a629f3f..f6a4f0ff2d 100644
--- a/doc/guide/dhcp6-srv.xml
+++ b/doc/guide/dhcp6-srv.xml
@@ -554,8 +554,7 @@ linkend="cassandra-database-configuration4"/> for details.</para>
     purpose, be it lease or hosts information. This arrangement gives the most
     flexibility. Kea can keep leases and host reservations
     separately, but can also point to the same database. Currently the
-    supported hosts database types are MySQL and PostgreSQL; the Cassandra
-    backend does not yet support host reservations.</para>
+    supported hosts database types are MySQL, PostgreSQL and Cassandra.</para>
 
     <para>For example, the following configuration can be used to
     configure connection to MySQL:
@@ -627,7 +626,9 @@ the host database after connectivity has been lost may be specified:
 If the server is unable to reconnect to the database after making the maximum number
 of attempts the server will exit. A value of zero (the default) disables automatic
 recovery and the server will exit immediately upon detecting a loss of connectivity
-(MySQL and Postgres only).
+(MySQL and Postgres only). For Cassandra, Kea uses Cassandra interface that
+connects to all nodes in a cluster at the same time. Any connectivity
+issues should be handled by internal Cassandra mechanisms.
   </para>
   <para>
 The number of milliseconds the server will wait between attempts to reconnect to the