Open Infrastructure

h1. Uptime objectives

h2. Power Supply

* What: Power supply to all systems

* Setup:

** Core systems are connected to UPS that last between 7-30 minutes

** Virtualisation systems are not (yet) fully connected to UPS

* Expected outages

h2. Internal Network

* What: The connection between servers, routers and switches.

* Setup: All systems are connected twice internally, usually via fiber

* Expected outages

** Single switch outage: no outage, maybe short packet loss (LACP link detection might take some seconds)

** Double switch outage: full outage, manual replacement

* Uptime objectives

** 2019: >= 99.999%

** 2020: >= 99.9995%

** 2021: >= 99.9995%

h2. L2 external Network

* What: the network between the different locations

* Setup:

** Provided by local (electricity) companies.

** No additional active equipment / same as internal network

* Expected outages

** 1 in 2018 that could be bridged by Wifi

** If an outage happens, it's long (digging through the cable)

** But it happens very rarely

** Mid term geo redundant lines planned

* Uptime objectives

** 2019: >= 99.99%

** 2020: >= 99.995%

** 2021: >= 99.995%

h2. L3 external Network

* What: the external (uplink) networks

* Setup

** Currently one uplink by EDIG / HIAG

* Expected outages

** Based on 2018

** Partially unresponsive / unwilling to cooperate

** Multiple smaller, one bigger outage

**  2nd and 3rd line providers are evaluated / phased in

** Plan 2019 phase in 1 connection per DC + third at the hub

* Uptime objectives

** 2019: >= 99.9%

** 2020: >= 99.99%

** 2021: >= 99.995%

h2. Routers

h2. Servers

* What: Servers host VMs and in case of a defect VMs need to be restarted on a different server