21U of dedicated rack space. Your power. Your network.
Half a 42U APC cabinet — lockable, contiguous and yours alone. Dual 16A A+B PDUs, a 10Gbps port, BGP sessions and free cross-connects in our privately owned Cambridge Tier III data centre.
- 21U dedicated, lockable space in a 750mm APC cabinet
- Dual 16A A+B PDUs from independent UPS paths
- 10Gbps port with BGP, VLANs and free carrier cross-connects
- 600Gbps Corero DDoS protection included as standard
Find the right rack size
Compare all tiers & pricingHalf rack, fully equipped
One monthly price — power, cooling, network, DDoS, BGP, cross-connects and remote hands all included.
21U Dedicated Space
Half a 750mm APC cabinet, contiguous and lockable — yours alone, with room to grow to a full rack.
Dual 16A A+B PDUs
Two dedicated 16A metered PDUs from independent UPS-backed power paths, 32A available on request.
10Gbps Network Port
10Gbps port included as standard with custom bandwidth commits and dedicated internet access available.
BGP & Cross-Connects
Bring your own ASN, announce your own IPv4/IPv6 ranges, and connect to peering partners via included cross-connects.
Private VLANs & Extended LAN
Tagged VLANs to your rack with optional layer-2 extension across the facility to your office or other sites.
600Gbps DDoS Protection
Always-on Corero SmartWall filtering included — sub-second mitigation with no NULL routes or traffic charges.
Priority Remote Hands
Free monthly remote hands plus priority response for incidents — our UK engineers are on-site 24/7/365.
24/7 Access & Security
Multi-level authentication, mantrap, CCTV and ANPR. Access by appointment with 24/7 emergency access.
From a single 1U to a full 42U cabinet
Predictable monthly pricing across every size — start small and scale into a full rack at your own pace. All tiers include power, bandwidth, IPs and our 600Gbps Corero DDoS shield.
21U half rack, dual 16A A+B PDUs, 10Gbps port, 1Gbps unmetered, /29 IPv4.
Indicative starting prices. Final quote depends on power draw, bandwidth and contract length. VAT not included.
When you need substantial space, fast
Half rack is for teams that have outgrown quarter rack but don't yet need a full 42U cabinet — substantial, dedicated, networked-up infrastructure with a clear upgrade path.
Departmental deployments
Consolidate dev, staging and production stacks in one private, well-organised footprint.
ISPs & carriers
Drop a substantial PoP into Cambridge with diverse fibre, BGP and free LINX/LONAP peering.
Regulated workloads
UK data sovereignty, locked cabinet, full audit trails — suited to FinTech, healthcare and legal.
Hosting & MSPs
Bring your hardware, run your platform, scale predictably without dedicated full-rack overhead.
Half rack at a glance
21U of dedicated, lockable space with 10Gbps networking, BGP and cross-connects included — a substantial step up from quarter rack with a clear path to a full 42U cabinet.
- 10Gbps port and BGP sessions included as standard
- Free cross-connects to LINX, LONAP and major UK carriers
- Upgrade to full rack without re-cabling your IP space
Rack & facility
- Footprint
- 21U dedicated, lockable
- Cabinet
- 750mm × 1070mm APC 42U
- Cooling
- N+N Stulz, hot-aisle containment
Power
- Power feeds
- Dual 16A A+B PDUs (32A on request)
- Power resilience
- N+N UPS + diesel standby generator
Network & IP
- Network port
- 10Gbps included
- Bandwidth
- 1Gbps unmetered commit + DIA available
- IPv4 / IPv6
- /29 IPv4 + /48 IPv6 standard
- BGP
- Bring-your-own ASN & IP space supported
- Cross-connects
- Free to LINX, LONAP & major carriers
- DDoS
- 600Gbps Corero SmartWall — included
Support & SLA
- Remote hands
- Free monthly + priority response
- SLA
- 100% power, ≥99.99% network uptime
Half rack sits in the middle of our colocation range
8 common questions
Transparent, predictable pricing
Power is often the single largest operational cost in colocation, so it pays to size it accurately. Use our power calculator to estimate your draw and the true monthly cost — including cooling, UPS and generator overhead.
- Per-Amp capacity-based billing
- Reserved N+1 UPS and generator capacity
- All-in cost: energy + cooling + UPS + generator
Prices shown are for guidance only — contact us for tailored quotes, volume discounts or large-scale requirements.
Request a call back
Considering 21U in our Cambridge Tier III DC? Request a call back — we'll talk through power, 10Gbps ports and BGP without the hard sell.
- UK engineers, no offshore call centre
- Free no-obligation quote
- 10Gbps port and BGP guidance included
- Average call back: under 30 minutes (working hours)
Or call us directly
+44 (0)1480 260 000