Passwd123
Contributor
Contributor

HA/FT without external storage

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Hello guys,

I have a question, I have 2 hosts with disks.

If I wanted to make a cluster using those datastores.

Can I make one of the two be the master and the slave copy the machines into its internal datastore so as to intervene when necessary?

ClusterA: [host1 (datastore1) + host2 (datastore2)]

                        MASTER               SLAVE

Slave replicates the datastore1 VMs in datastore2. If master goes down with his datastore1 slave intervenes and turns on same vm in datastore2.

Thank you

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daphnissov
Immortal
Immortal

Whatever you choose it needs to be a separate physical system providing NFS services. Windows implementation of NFS is consistently buggy and unstable and very few people use it.

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daphnissov
Immortal
Immortal

No, this isn't how vSphere works unless you purchased vSAN.

Passwd123
Contributor
Contributor

So I can remove the disks from the cluster and start the hosts with Flash or pendrive.

With those disks that I've removed, create a vsan storage on another server?

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daphnissov
Immortal
Immortal

No, it's not that simple. vSAN has certain requirements like compatible controller and flash disks and is a purchased add-on.

Passwd123
Contributor
Contributor

ok unfortunately the budget is limited, we decided to create external storage with windows NFS.

Is it better to create a host with VM Windows NFS or standalone windows installation (but this way we don't have backups on the storage)?

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daphnissov
Immortal
Immortal

Neither. Windows NFS is terrible. It's better that you have a separate, physical device like a NAS providing an NFS export. You will still need to back up those VMs to a separate location, however.

Passwd123
Contributor
Contributor

Why windows nfs is terrible?

I could also use linux with freenas, it has various protocols.

We make external backups with veeam

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daphnissov
Immortal
Immortal

Whatever you choose it needs to be a separate physical system providing NFS services. Windows implementation of NFS is consistently buggy and unstable and very few people use it.

View solution in original post

Passwd123
Contributor
Contributor

ok so if we create a cluster with 2 hosts and an external storage on a NAS that is qnap or powervault or hpe msa or poweredge with freenas are we safer than a nfs windows?

Obviously there are also "cold" veeam backups

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daphnissov
Immortal
Immortal

Yes, that's a better plan. You still need to store your Veeam data on some other location than the NAS.

Passwd123
Contributor
Contributor

Yes of course, other things would be chicken! 😄

Thank you so much daphnissov you are great!

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