Storage - Proxmox VE
https://pve.proxmox.com/wiki/StorageThe Proxmox VE storage model is very flexible. Virtual machine images can either be stored on one or several local storages, or on shared storage like NFS or iSCSI (NAS, SAN). There are no limits, and you may configure as many storage pools as you like. You can use all storage technologies available for Debian Linux.
Performance Tweaks - Proxmox VE
pve.proxmox.com › wiki › Performance_Tweakscache=none seems to be the best performance and is the default since Proxmox 2.X. . host don't do cache. guest disk cache is writeback Warn : like writeback, you can loose datas in case of a powerfailure you need to use barrier option in your linux guest fstab if kernel < 2.6.37 to avoid fs corruption in case of powerfailure.
Storage - Proxmox VE
pve.proxmox.com › wiki › StorageThe Proxmox VE storage model is very flexible. Virtual machine images can either be stored on one or several local storages, or on shared storage like NFS or iSCSI (NAS, SAN). There are no limits, and you may configure as many storage pools as you like. You can use all storage technologies available for Debian Linux.
Performance Tweaks - Proxmox VE
https://pve.proxmox.com/wiki/Performance_Tweaksfast, can loose data on power outage depending on hardware ... doesn't flush data, fastest and unsafest cache=none seems to be the best performance and is the default since Proxmox 2.X. host don't ... so the guest would not need to send down flush commands to manage data integrity. The storage behaves as if there is a writethrough cache ...