Dear Customers,

We would like to inform you of upcoming scheduled  maintenance to our fibre line between 4D Data Centre – Telehouse North, during which your services may be a subject to a brief packet loss, while the redundant paths re-route the traffic and OSPF protocol re-calculates the costs. Please note, this is an “Service affected” announcement.

You can find the full details of the maintenance listed below:

Start date and time: 17-03-2012 00:01:00
End date and time: 17-03-2012 07:00:00

Devices: Fibre link between devices: lo0-phoenix.c4l.co.uk (Telehouse North) and lo0-exor.c4l.co.uk (4D Data Centre)

Description of Work:
Due to essential splicing work to increase capacity, our provider will be moving our fibre to a new circuit. If any unexpected problems occur the circuit will be restored using the existing cable, fibre and patching.

Justification:
Essential network maintenance to increase capacity.

Regression Details:
This is a full cut, so if there are any issues then the circuits will be restored, as quickly as possible.

Contact:
Should customers have any queries, please raise a support ticket on the support site, https://support.c4l.co.uk or give the technical team a call on 01202 299799 ext. 3.

Kind Regards
C4L Technical Team

Dear Customers,

We would like to inform you of upcoming scheduled  maintenance to our fibre line between Telecity HEX 8&9 – Bluesquare Maidenhead, during which your services may be a subject to a brief packet loss, while the redundant paths re-route the traffic and OSPF protocol re-calculates the costs. Please note, this is an “SERVICE AFFECTED” announcement.

You can find the full details of the maintenance listed below:

- Date: 3 March 2012 – 04 March 2012
- Window: 21:00pm (UTC) – 09:00pm (UTC)
- Devices: Fibre link between devices: Ringo (Telecity HEX 8&9) and Diagmo (Bluesquare Maidenhead)
- Type of maintenance: A number of circuits require re-splicing due to Network Rail expansion in the London area
- Affected services: layer 2 services and IP Transit.

Contact:
Should customers have any queries, please raise a support ticket on the support site, https://support.c4l.co.uk or give the technical team a call on 01202 299799 ext. 3.

Kind Regards
C4L Technical Team

Dear Customers,

The following notification is to inform you of a scheduled maintenance on the C4L Network:

Start of work – At Risk period

Start Date: 25 February 2012 Start Time: 09:00

End of work – At Risk period

Risk End Date: 26 February 2012 Risk End Time: 18:00

Affected Services: No services should be affected.

Reason: Our fibre proivider will be performing necessary network maintenance on the fibre link between County Gates and 8/9 Harbour Exchange. This work will be “at risk” only, as spare fibres will be tested and all live fibres will not be worked on.

Should customers have any queries, please raise a support ticket on the support site, https://support.c4l.co.uk or give the technical team a call on 01202 299799 ext. 3

Kind Regards
C4L Technical Team

Dear Customers,

We have been advised of the following planned maintenance work being carried out at the 4D data centre:

What and Why

As part of our rigorous preventative maintenance schedule, please be advised that on Monday 27th February at 16:00, 4D will be conducting its monthly generator load test at our Sirius 2 facility in Byfleet. Please note that this is a routine system readiness test and will be performed in a controlled manner.

If you are on-site at the time of the test, you may notice the Computer Room Air Conditioning units and lighting turn off and on momentarily within the data floor and reception areas – this is expected and emergency lighting will be available in all areas for the duration of the test.

4D views this test to be of the category ‘low risk’ and does not foresee any disruption to on-going power or network services.

When

Start Date & Time: 27/02/2012 – 16:00

End Date: 27/02/2012 – 17:00

Regression Plan

Mains power from the national grid remains available and building load will be switched back to mains power.

Should you have any questions or queries, please don’t hesitate to contact us via the ticket system at https://support.c4l.co.uk

Kind Regards,

C4L Technical Team

Dear Customers,

We have been advised of the following planned maintenance work being carried out at the Bluesquare Milton Keynes data centre:

What

Lumison/Bluesquare will be carrying out routine maintenance on the UPS System that support the critical load on the B side of the Milton Keynes Data Centre

Each unit will be serviced individually and returned to the string before moving onto the next unit ensuring that your rack equipment will always have 1 backed up power supply throughout the exercise.

In keeping with the manufacturers recommendations, and the
Lumison/Bluesquare Planned and Preventative Maintenance regime we carry out this exercise at the prescribed times to ensure that all of our Data Centre systems continue to deliver the performance expected in a critical environment.

This work forms a major part of this regime.

The work is now scheduled to take place on 4th March at 21:00 and is scheduled to last for 4 hours.

Should you have any questions or queries, please don’t hesitate to contact us via the ticket system at https://support.c4l.co.uk

Kind Regards,

C4L Technical Team