anchor.diff:  - Minimum 40 GB hard disk space for the file system containing *_/var/_*.
   
   |xref:../../architecture/infrastructure_components/kubernetes_infrastructure.adoc#node[Nodes]
  -a| - Physical or virtual system, or an instance running on a public or private IaaS.
  -ifdef::openshift-origin[]
  -- Base OS: Fedora 21, CentOS 7.1, or RHEL 7.1 or later with "Minimal"
  +a| * Physical or virtual system, or an instance running on a public or private IaaS.
  +ifdef::openshift-origin[]
  +* Base OS: Fedora 21, CentOS 7.1, or RHEL 7.1 or later with "Minimal"
   installation option, or RHEL Atomic Host 7.2.4 or later.
   endif::[]
   ifdef::openshift-enterprise[]
  -- Base OS: RHEL 7.1 or later with "Minimal" installation option, or RHEL Atomic
  +* Base OS: RHEL 7.1 or later with "Minimal" installation option, or RHEL Atomic
   Host 7.2.4 or later.
   endif::[]
  -- NetworkManager 1.0 or later
  -- 1 vCPU.
  -- Minimum 8 GB RAM.
  -- Minimum 15 GB hard disk space for the file system containing *_/var/_*.
  -- An additional minimum 15 GB unallocated space to be used for Docker's storage
  +* NetworkManager 1.0 or later
  +* 1 vCPU.
  +* Minimum 8 GB RAM.
  +* Minimum 15 GB hard disk space for the file system containing *_/var/_*.
  +* An additional minimum 15 GB unallocated space to be used for Docker's storage
   back end; see xref:configuring-docker-storage[Configuring Docker Storage]
   below.
  +
  +|External etcd Nodes
  +|Minimum 20 GB hard disk space for etcd data.
   |===
   
   [IMPORTANT]
  
positive.code: Use the above with the following table to plan the maximum loads for nodes and
  pods:
  
  [cols="8,2",options="header"]
  |===
  |Host |Sizing Recommendation
  
  
negative.code: In a highly available {product-title} cluster with external etcd, a master host
  should have 1 CPU core and 1.5 GB of memory, on top of the defaults in the table
  above, for each 1000 pods. Therefore, the recommended size of master host in an
  {product-title} cluster of 2000 pods would be 2 CPU cores and 3 GB of RAM, in
  addition to the minimum requirements for a master host of 2 CPU cores and 16 GB
  of RAM.
  
  When planning an environment with multiple masters, a minimum of three etcd
  hosts as well as a load-balancer between the master hosts, is required.
  