Stephenmccarron.com

or Irish Datacenters if you’re of the American persuasion.

The following is a comprehensive list of all datacentres, based in the Republic of Ireland, who offer colocation and related services on an open basis (ie: open to the public on a commercial basis).

A note on Tiering: Currently, all Irish Datacentres are ‘Tier 3″ or equivalent, as a requirement of Tier 4 standards is duality of each key component – most notably power. As Ireland has a sole electricity transmission network, currently no Irish provider can enjoy a Tier 4 level. ‘Near Tier 4′ standards can be achieved by linking multiple physical datacentres that are geographically diverse, but such a move assumes your application or infrastructure will tolerate being ’split’ physically in a manner that will not impact its function.

The following lists all Irish datacentres, offering services to the public, with a Tier 3 or better standard with flags indicating carrier neutrality / multiple carriers present.