Solved: Re: vSan design

olicata · ‎09-20-2017

Hi, i need raid 6 but the design for the IT is (pic). Node 1 (4host) and Node 2 (1host). Both is connected between switch L2.

Can i have Raid6?

GreatWhiteTec · ‎09-20-2017

You are going to need a vSAN license for every host in the vSAN cluster, regardless if they contribute to storage or not. So if host 5 IS part of the vSAN cluster, then you will need a license. If Host 5 is out of the vSAN cluster on a separate vSphere cluster, then only vSphere licenses are required for that host.

~Dave

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TheBobkin · ‎09-20-2017

Hello olicata

Using RAID6 as the FTM (Fault Tolerance Method) requires a minimum of 6 nodes, so no this will not be possible here.

docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.virtualsan.doc/GUID-AD408FA8-5898-4541-9F82-FE72E6CD6227.html

Additionally RAID6 requires All Flash nodes which require 10GB links but I see there are only 1Gb links connecting the nodes to the switches so this would further rule this out.

docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-6D818555-8DE8-4F06-9498-66903FB9C775.html

Bob

olicata · ‎09-20-2017

Thank you. can you tell me, if the host 5 is out of the vsan licence ?

GreatWhiteTec · ‎09-20-2017

You are going to need a vSAN license for every host in the vSAN cluster, regardless if they contribute to storage or not. So if host 5 IS part of the vSAN cluster, then you will need a license. If Host 5 is out of the vSAN cluster on a separate vSphere cluster, then only vSphere licenses are required for that host.

~Dave