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The Sheffield Data Centre

Opened in June 2009, the Sheffield Data Centre is an N+1 Data Centre located in Holbrook, South Sheffield.

Located less than 8 miles outside Sheffield City Centre, and just over 5 miles from Junction 31 of the M1, the Sheffield Data Centre provides businesses of all sizes in Sheffield and South Yorkshire high quality, reasonably priced and professionally managed cloud servers, hosting, colocation, dedicated servers, and Data Centre services.

The Sheffield Data Centre is owned and run exclusively by High Availability Hosting Limited.

In mid-2012 we leased a second unit in the same business park, nicknamed the Sheffield Data Centre Extension (or DC1.5) it provides offices, meeting facilities, and room for a further 18 racks.

  • Our Blog contains pictures of the construction and fit-out, starting from April 2009.

Data Centre Specification

Tier: 2 (not accredited, but performs to)
Redundancy: N+1
Delivery paths: 2
Privately owned: Yes, since inception
Hosting floor space: 46 racks in two halls when at capacity
Floor: Raised access floor in Hall 1, solid concrete in Hall 2
Layout: "Airlock" from main entrance to data area
Monitoring: 24x7 internal and external monitoring of building + infrastructure with automatic out of hours callout
Building amenities: Car parking, toilets, kitchen/breakout (Hall 2)

Power Specification

Utility supply: On-site YEDL substation direct to local ring, 3-phase feed to building
Power: 600A directly connected, additional capacity available
Footprint: Up to 30A per rack
A+B to some racks with separate UPS and power phases
Backup UPS: Independent rack UPS protection for servers and core network
Backup generators: On site 100kVA diesel generator
Fuel supply: 8 hours continuous at 100% with fuel supply arrangements

Environmental Specification

Cooling: Three chilled water Evaporative Coolers with balanced ventilation / extraction
Air handling: Hot / cold rack isles with contained hot air extraction
Security: 24x7 off-site monitored Honeywell alarm
Paxton Access control throughout building
Internal and External off-site monitored CCTV
Access: 24 hour access available (for full and half rack customers)

Network Specification


Level3 Fibre (gigabit/gigabit barer)
Virgin Media Business Fibre (gigabit/gigabit barer)
BT/Openreach DP with copper (RedCare, ADSL, customer specific lines)

Core networking: Redundant Cisco & ZyXEL switches, active / passive site edge routers with failover
Equipment networking: Cisco & ZyXEL access switches, 100Mbit (Cisco), 1Gbit (ZyXEL) to the server, redundant switch ports available


The Sheffield Data Centre is located in Holbrook, Sheffield.

Back in late 2008 / early 2009 as part of the initial planning phase, after consultations with Sheffield City Council, the Environment Agency and prospective clients, it was decided to locate the Data Centre out of the City Centre and Don Valley areas - away from the locations affected by the flooding in 2007, but still within the city limits.

The Environment Agency report on the location of the Sheffield Data Centre says the area is not at risk of "Flooding from rivers or sea without defences", and not at risk of "Extent of extreme flood".

The yellow square is where the Sheffield Data Centre is located.

Flood Map Sheffield S20 - No risk of flooding here