1. Server requirements

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All servers must have PXE boot capability and IPMI Remote Management Interface. PXE boot must be activated as a first boot option during Warren setup phase 1 only and can be deactivated afterward. 

Supported CPU manufacturers are Intel, AMD and some models of ARM (Intel is preferable). 

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3. Server inter-connectivity

• Three IPFive VLAN-poolss are required:

• For end-users, 1 for internal IPs and 1 for external IPs.

For Warren, 1 for internal IPs

• management - This network is used to access physical nodes over VPN using SSH. It should be assigned to every physical node. Regular private network.

• storage - This network is used for platform and Ceph communications. It should be assigned to control nodes, hypervisors and Ceph monitors. Usually Ceph refers as "Ceph public" or "Ceph client" network. Regular private network.

• ceph_private - This network is used for Ceph internal communications. It should be assigned only to Ceph nodes.
• tungsten - This network is used for virtual machine networking. It should be assigned to all control nodes, all hypervisors and to SDN gateway router (juniper MX/vMX or Cisco ASR etc)
• public - This network is used for public access to platform (web UI and API). It should be assigned to control nodes only.

• There are no strict requirements on networking equipment manufacturers (Juniper and Mellanox are preferred).

• NIC requirements:

• For Control domain servers, at least 2 extension NICs, one of which must be 10GbE or 25GbE (dual-port recommended)

• For Virtualization domain servers, at least 2 extension NICs, both 10GbE or 25GbE(dual-port recommended to separate virtual machine networking from storage).

• Additionally, for management and hardware monitoring purposes, all servers must include at least 1 NIC, 1GbE.

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• As a system storage, both, Control domain and Virtualization domain require:
  

  • At least 2 x 500 GB SSD or NVMe in RAID 1 as a boot storage

• Control domain additionally require:

  • At least 2 TB SSD or NVMe for Warren components and caching

• As a user storage for Virtualization domain, at least one of the following storage types is a strong requirement:

  • Distributed storage (e.g. CEPH)

• Other user storage types are in BETA stage and will be available in the future:

  • Local storage of SSD or NVMe in RAID 10

  • Enterprise storage solution (e.g. 3PAR)

5. Software

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• All servers should come with NixOS 1820.09 Installed
• All servers should have VLAN-s configured and named as stated in Server inter-connectivity chapter (only exception is ceph_private VLAN, this name can be chosen freely).