1.9.1 – Identify basic vSAN requirements(networking, disk count + type)

It requires:

• Minimum of three hosts to be part of the vSphere cluster and configured for vSAN
• A vSAN network
• One SAS or SATA host bus adapter or a RAID controller that is in passthrough mode or RAID 0 mode
• Local disks on each host that are pooled to create a virtual shared vSAN datastore.
• 10GB NIC
• SAS/SATA/NVMe controllers
• 8 – 32 GB of RAM depending on the amount of drives and disk groups

A host disk group requires at least:

• One flash device for caching
• One to seven capacity devices for storage

You’ll have to disable vSphere HA before enabling vSAN on a cluster because on a vSAN enabled cluster, the storage network is used by vSphere HA