+* Memory, minimum 2 GB for OS and Proxmox VE services. Plus designated memory
+ for guests. For Ceph or ZFS additional memory is required, approximately 1 GB
+ memory for every TB used storage.
+
+* Fast and redundant storage, best results with SSD disks.
+
+* OS storage: Hardware RAID with batteries protected write cache (``BBU'') or
+ non-RAID with ZFS and SSD cache.
+
+* VM storage: For local storage use a hardware RAID with battery backed
+ write cache (BBU) or non-RAID for ZFS. Neither ZFS nor Ceph are compatible
+ with a hardware RAID controller. Shared and distributed storage is also
+ possible.
+
+* Redundant Gbit NICs, additional NICs depending on the preferred storage
+ technology and cluster setup – 10 Gbit and higher is also supported.
+
+* For PCI passthrough a CPU with VT-d/AMD-d CPU flag is needed.