Modify CNA to FC adapter on Netapp Ontap 9

Ontap is a storage operating system from Netapp which able to manage CNA network adapter. CNA or Converged Network Adapter which has a flexibility to use ethernet or fc depend on your SFP plugable transceiver. You can use 10Gbps SFP transceiver for LAN/NAS or 16Gbps for SAN connectivity. 

Netapp Ontap activated the CNA mode by default. So, if you use transceiver for FC 8Gbps or 16Gbps, you need to activated the CNA mode to FC mode manually. I have found this on Ontap installed at Lenovo ThinkSystem DM5000H series.  

Create and join cluster on Cluster Data ONTAP

Netapp is a powerfull storage coming with a lot of features. ONTAP is Netapp's proprietary operating system for storage disk array. ONTAP includes code from Berkeley Net/2 BSD Unix, Spinnaker Networks technology and other operating systems. ONTAP originally only supported NFS, but later added support for SMB, iSCSI and Fibre Channel Protocol (including Fibre Channel over Ethernet and FC-NVMe). 

In June 16, 2006, NetApp released two variants of Data ONTAP, namely Data ONTAP 7G and, with nearly a complete rewrite[1], Data ONTAP GX. Data ONTAP GX was based on grid technology acquired from Spinnaker Networks. In 2010 these software product lines merged into one OS - Data ONTAP 8, which folded Data ONTAP 7G onto the Data ONTAP GX cluster platform [source: Wikipedia]. 

ONTAP can be operated with web gui using Netapp System Manager and using Command Line Interface. Command line interface is the most interested interface in the computing world. You can manage, control and troubleshoot over command line. In this article, we will demonstrate the cluster creation and node join on this tutorial.

Redhat Cluster - Fencing, what is it about?

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░ +Suwardi-Wed 10/Aug/2016 09:40 +Centenial Tower 12th fl+

What is Fencing? Fencing is a statement from cluster to cut off / disconnect a node from cluster. A node that to be disconnected, it will be cut off from share storage device connection. This function is handled by fenced daemon.