Storage stretched cluster VMware VSAN witness host

vSAN Stretched Cluster – Partition behavior changes

My good pal Paudie and I are back in full customer[0] mode these past few weeks, testing out lots of new and upcoming features in future release of vSAN. Our testing led us to building a new vSAN stretched cluster, with 5 nodes on the preferred site, 5 nodes on the secondary site, and of […]

Storage stretched cluster VMware VSAN vSphere witness host

VSAN 6.2 Part 9 – Replacing the witness appliance

There might be a reason in VSAN stretched cluster environments or in 2-node VSAN ROBO deployments to change the witness appliance. The one thing to keep in mind is that you must use a witness appliance that has the same on-disk format as the rest of the disk groups in the cluster. Right now, there […]

deduplication Storage stretched cluster VM Storage Policies VMware VSAN vSphere witness host

VSAN 6.2 Part 8 – Upgrading VSAN Stretched Cluster from 6.1 to 6.2

This is an exercise that we ran through in our lab environment, and we thought that the steps would be useful to share here. By way of introduction, our 4 node cluster is split into a 2+2+1 configuration, where there are 2 ESXi hosts on site A (VLAN 4), 2 ESXi hosts on site B […]

Networking stretched cluster Uncategorized VSAN witness host

Supported network topologies for VSAN stretched cluster

As part of the Virtual SAN 6.1 announcements at VMworld 2015, possibly the most eagerly anticipated announcement was the support for a VSAN stretched cluster configuration. Now VSAN can protect your virtual machine across data centers, not just across racks (which was achievable with fault domains introduced in VSAN 6.0). I’ve been hearing requests from […]

Flash Storage VMware VMworld VSAN vSphere

A brief overview of the new Virtual SAN 6.1

With the announcements just made at VMworld 2015, the embargo on Virtual SAN 6.1 has now been lifted, so we can now discuss publicly some of the new features and functionality. Virtual SAN is VMware’s software-defined solution for Hyper-Converged Infrastructure (HCI). For the last number of months, I’ve been heavily involved in preparing for the […]