Controller VM Requirements and Physical Server Specifications

The controller VM requirements vary by Contrail Cloud environment.

Table 1 lists the recommended CPU, memory, and disk requirements for the controller VMs.

Table 1: Controller VMs Requirements
Role	vCPU (Threads)	Memory (GB)	Disk (GB)
Undercloud VM	28	128	500
OpenStack Controller VM	8	48	500
Contrail Analytics DB VM	12	48	500 & 1000
Contrail Analytics VM	12	48	250
Contrail Controller VM	16	64	250
AppFormix VM	16	32	500
TSN (Contrail Service Node)	4	8	100
Control Host OS	4	8	100

In order to address the controller VM requirements listed in Table 1, the typical physical server specifications are listed in Table 2. Depending on the actual workloads and the data plane traffic requirements, the network interfaces could be 25G/40G versus 10G.

Table 2: Physical Server Specifications
Role	Cores	Memory	Disk	Network
Jumphost	20 (2x10)	128 GB	2 x 1 TB HDD (SW RAID) — Host OS Note: HW Raid recommended if RAID controller is available in your environment. 3 x 1 TB HDD — Data	1G — IPMI 1G/10G — Provisioning 1G/10G — Intranet
Control Host	36 (2x18)	256 GB	1 x 1 TB SSD (Cassandra Journaling) Note: 1x1TB is the recommended disk memory option for control hosts. 2 x 1 TB HDD (HW RAID)—Host OS 3 x 2 TB HDD (HW RAID)—Data	1 x 1G — IPMI 1x1G/10G — Provisioning 1x1G/10G — Management (optional) 4 x 10G/25G/40G ports on two Intel Fortville (XL710/X710/XXV710) family NICs. Both high-speed NICs must be on NUMA 0.
Compute Node	28 (2x14)	256 GB	2 x 1 TB HDD (HW RAID) — Host OS 4 x 1 TB HDD — Data (only needed if Ceph storage not used to provide storage)	1 x 1G — IPMI 1x1G/10G — Provisioning 1x1G/10G — Management (optional) 4 x 10G/25G/40G ports on two Intel Fortville (XL710/X710/XXV710) family NICs. Both high-speed NICs must be on NUMA 0.
Storage Node	16 (2x8)	128 GB	2 x 1 TB HDD (HW RAID) — Host OS 2 x 480 GB SSDs — Ceph Journaling 10 x 1 TB HDDs — Ceph OSDs	1 x 1G — IPMI 1x1G/10G — Provisioning 1x1G/10G — Management (optional) 4 x 10G/25G/40G ports on two Intel Fortville (XL710/X710/XXV710) family NICs. Both high-speed NICs must be on NUMA 0.