Few datastore in one vSAN

[malefik]

Colleagues, in vSAN can only rely on one of the shared storage drive? Or from different disk groups, you can create different datastore?

Let me explain: I want to to have based on a system of two vSAN datastore: one fast, but a small volume disk (for virtual machines, databases) and the second on slow, but large volume (for file server).

[jgaleano]

Hi Malefik

following the vSphere 5.5 Configuration Maximums, in a single cluster you can only have 1 VSAN datastore, so what you need is not supported right know, you can have multiple disk groups in a cluster but only one datastore.

What you can do its generate multiple FTT levels to tolerate failures.

Here are the link of the Configuration Maximus, and a capture of the relevant info.

http://www.vmware.com/pdf/vsphere5/r55/vsphere-55-configuration-maximums.pdf.

Hope this info works for you.

[depping]

I think you misunderstood the VSAN concept.

VSAN takes local disks and a local flash devices, and aggregates those resources of at a minimum 3 hosts in to a single shared datastore. Any availability or performance requirements are to be specified through the policy, and you assign that policy to a VM. Through that policy your VM will be then provisioned in such a way that it will meet the requirements.

When you design a VSAN cluster it is highly recommended to have uniform systems and uniform disks. So all disks preferably the same type / size.