Power out again at Telecity
It has been ... 2 ... weeks since we tripped over a cable
Telecity's Docklands hosting and back-up centre, Meridian Gate, is suffering a power outage.
We've had emails from several customers currently twiddling their thumbs waiting for services to be restored. No official word from the company yet, but we'll update this story should they return our phone calls.
Reg readers told us the power had failed earlier today but had no information on why back-up generators and power supplies had also failed.
The company's last outage was earlier this month, and was also blamed on power problems.
Such problems are often blamed on exceptionally hot weather – cooling is a major issue for data centres at the best of times. But given the rubbish summer we're suffering in the UK, it seems unlikely that heat is the problem.
Drop us a line if you know more. ®
erm no it isnt..
Tier 1: Guaranteeing 99.671% availability.
Tier 2: Guaranteeing 99.741% availability.
Tier 3: Guaranteeing 99.982% availability.
Tier 4: Guaranteeing 99.995% availability.
Tier 2 Definition:
Tier 2 data centres are less susceptible to disruption, as they have N+1 across their cooling and power units. As they feature UPS and generators they are more protected from outages, although these features will still travel across a single path. Tier 2 data centres also benefit from having raised flooring, therefore being more protected from flooding.
One Co-lo provider lists the following as tier 2..
■Telecity Meridian Gate
■Telecity Harbour Exchange 2
■Telecity Harbour Exchange 6 & 7
■Telecity Harbour Exchange 8 & 9
As for Tier 4 I thought the uptime institute specified it must have armed security gaurds?
this from telecity - although they are now NOT going to switch to generators
Following the power incident at Meridian Gate earlier today, we have identified a fault on a breaker in the power distribution system.
To ensure reliability of power supply to customer equipment and in order to carry out further investigation, TelecityGroup will need to isolate mains power to the site. The site load will be transferred to generator supply today at 17:30 (BST). The transfer to generator supply will be carried out in a controlled manner and TelecityGroup’s specialist contractors and engineers will monitor the power systems throughout the investigation.
The backup generators are set up in an N+1 configuration. We do not anticipate any impact to your service whilst these investigative works are carried out.
We will issue a further update once these works have been completed and site load has been transferred back to normal mains power supply.
Get what you pay for
It's a tier 3 datacentre so there are some common power components. Typically a single bank of UPS's will carry the building load in an N+1 configuration. A failure of the output side of the UPS banks, as seen at Blue Square recently iirc, will take out everything with no option to run on generator power.
If you want fully redundant N+N power, co-lo in a tier 4 datacentre.