Need advise on architecture

Hi all,

I am new to ESXi and virtualization in general. Looking for your opinions on infrastructure setup.

Please take a look at the chart and advise if that will be a good setup.

ESXi host 1 is a new HP machine with 16 cores, RAID 10 array and 32 Gb of RAM.

ESXi host 2 is a server with 4 cores, 10 Gb of RAM (RAID not configured yet).

OpenFiler servers have 4 cores, 4 Gb of RAM, (RAID not configured yet).

Not sure about VDP VM performance since the datastore will be located on a network shared folder. Unfortunately VDP does not allow using separate share for backups...

Sorry for dummy questions - I am still learning.

Thank you!