University of Cambridge Computer Laboratory - WCDC power distribution unit replacement – Maintenance details
All systems operational
WCDC power distribution unit replacement
Completed
Scheduled for 30 January, 2025 at 14:30 – 17:25
Affects
Internal Services
Under maintenance from 2:30 PM to 5:25 PM
Other Internal Services
Under maintenance from 2:30 PM to 5:25 PM
Datacentres
Under maintenance from 2:30 PM to 5:25 PM
WCDC
Under maintenance from 2:30 PM to 5:25 PM
Updates
Completed
30 January, 2025 at 17:25
Completed
30 January, 2025 at 17:25
Maintenance has completed successfully.
In progress
30 January, 2025 at 14:30
In progress
30 January, 2025 at 14:30
Maintenance is now in progress
Planned
30 January, 2025 at 14:30
Planned
30 January, 2025 at 14:30
We will be replacing a power distribution unit (PDU) in our core infrastructure rack in the West Cambridge Data Centre, which powers the 1Gbps switches and a small number of other infrastructure systems. No user impact is expected, except for the following cases:
User servers tfc-app1, tfc-app2, tfc-app4 will lose networking for approximately half an hour
Verex access control management (card access updates etc.) will be unavailable for approximately half an hour
Minor delays in authenticating to Active Directory are possible, as one of the three domain controllers (adsrv07) will be turned off for approximately 45 minutes
BMC and serial console access to other systems in WCDC will be unavailable for approximately 30 minutes
One of the two DHCP servers (sxp12) will also be turned off, but the other server should seamlessly handle all DHCP requests.
This work is not related to the Estates electrical work happening in WCDC on the same day, but we have scheduled our work to take place during the same vulnerable period. Our PDU replacement will not reduce resilience any further.
