Merge pull request #673 from cgoveas/devel

Updating Limitations for Single Storage Node

docs/README.md

@@ -208,6 +208,7 @@ If hosts are listed, then an IP address has been assigned to them by DHCP. Howev
 * In a single node cluster, the login node and Slurm functionalities are not applicable. However, Omnia installs FreeIPA Server and Slurm on the single node.  
 * To change the Kubernetes version from 1.16 to 1.19 or 1.19 to 1.16, you must redeploy the entire cluster.  
 * The Kubernetes pods will not be able to access the Internet or start when firewalld is enabled on the node. This is a limitation in Kubernetes. So, the firewalld daemon will be disabled on all the nodes as part of omnia.yml execution.
+* Only one storage instance (Powervault) is currently supported in the HPC cluster.
 
 # Contributing to Omnia
 The Omnia project was started to give members of the [Dell Technologies HPC Community](https://dellhpc.org) a way to easily set up clusters of Dell EMC servers, and to contribute useful tools, fixes, and functionality back to the HPC Community.