Their website still states 100% uptime
Look at their SLA page "The VESK SLA is 99.9%, guaranteeing uptime for 99.9% of the time in any given month. VESK are proud to report that we have maintained 100% uptime for many consecutive months"
[http://www.vesk.com/our-datacentres/the-vesk-sla/]
Their Datacentre page also make for interesting reading - how can they claim all this when a single hard drive failure can bork their whole system and make them switch to an alternate datacentre where a number of servers won't boot.
[http://www.vesk.com/our-datacentres/]
"Internal datacentre resilience
Internally within each server rack in our datacentres we operate n+2 redundancy across our servers. That means a server, or even two servers can fail at any one point in time and new servers are waiting to takeover the faulty servers.
Within our storage architecture we run n+1. That means any storage unit (SAN) can fail and we have immediate failover to another SAN, in fact end users wouldn’t even notice a failure if working on a document.
All networking equipment is mirrored, not only on a per-switch basis, but across multiple network switches. Our firewalls are mirrored resulting in immediate failover in the event of any part of our network failing.
We have multi-honed Internet connectivity into each datacentre from different providers.
We have dual electricity feeds from the National Grid in addition to a third party power supplier. Furthermore we have petrol and diesel generators and operate the only n+2 power datacentre facility in the UK.
We do not have any single points of failure internally within our datacentres."