Sep 21 2015

Prism Central and NOS 4.1.5, NCC 2.0.2 and Tech Preview Features – What’s New!

This week Nutanix made Prism Central 4.1.5, NOS 4.1.5 and NCC 2.0.2 releases available. These are all small maintenance releases, but they have some good improvements for the areas data protection and reliability; and some tech preview features.

In a Nutanix fashion these updates are coming only couple months after the 4.1.4 release, and also follow the traditional non-disruptive upgrade that customers are already used to. Let’s go straight into the features improvement.


  • SyncRep for Hyper-V Clusters Update/VSS Support

NOS, as of version 4.1.3, supports SyncRep for Hyper-V clusters. This feature enables you to “stretch” a container and its protected VMs between clusters when implementing data protection. For NOS 4.1.5, Volume Shadow Copy Service (VSS; also known as Shadow Copy or Volume Snapshot Service) is now supported for containers deployed as part of this feature. For example, you can use Veeam version 8.0 software to employ VSS backup copies of VMs running on a primary site for SyncRep configurations on Hyper-V clusters.


  • Data Protection Enhancement: 1-Hour RPO

As of NOS 4.1.4, Nutanix implemented a series of enhancements to the 1-Hour RPO logic used when you configure data protection with 60-minute snapshot intervals. For example, you might see significant improvement in areas such as latency.


  • Windows Guest VM Failover Cluster [Tech Preview]

NOS 4.1.5 supports configuring Windows guest VMs as a failover cluster. This clustering type enables applications on a failed VM to fail over to and run on another guest VM on the same or different host. This NOS release supports this feature on Hyper-V hosts with in-guest VM iSCSI and SCSI 3 Persistent Reservation (PR).


  • Erasure Coding [Tech Preview]

Erasure coding (EC) is a method of data protection in which data is broken into fragments, expanded and encoded with redundant data pieces and stored across a set of different locations or storage media. Erasure coding is extensively used in data centers since they offer significantly higher reliability than data replication methods at much lower storage overheads. Erasure coding is broadly applicable, but especially relevant in large clusters with mission critical data, opting for RF3 configured resiliency. Read more here.



  • Acropolis High Availability [Tech Preview]

When a node becomes unavailable, VMs that are running on that node are automatically restarted on another node in the same cluster.



  • Acropolis Volume Management [Tech Preview]

The Acropolis Volumes API exposes back-end NDFS storage to guest operating system, physical hosts, and containers through iSCSI. This allows any operating system to access Nutanix DSF (Distributed Storage Fabric) and leverage it’s storage capabilities. Read more here.


This article was first published by Andre Leibovici (@andreleibovici) at

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