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System Availability

Services

Service Hosted
Database Server Data centers
Web sites, API, webservices Data centers
Email Data centers
Fax Data centers
Documents and images Azure
SMS via Bulk SMS - http://www.bulksms.com/
Authentication Auth0 - https://auth0.com/

 

Data Centers

We use two data centers at geographically separate locations provided by Stratogen:

The web sites are load balanced over the two data centers. Failure at one data center will result in all web traffic automatically being routed to the other.

The databases are mirrored between the two data centers. If the secondary data center fails the primary will continue to operate as normal. If the primary fails we operate a warm fail over, whereby a minor manual configuration change is required.

Azure

All of our timesheet images and documents are stored in Azure.

We use European data centers with Geo Redundant Storage (GRS), which are located in:

  • North Europe Ireland (Primary)
  • West Europe Netherlands

From <https://azure.microsoft.com/en-us/regions/>

Database Backups

All database backups are stored on a distributed file system, on the SAN replicated between the Data Centers.

The database transaction logs are backed up every 15 minutes. If both sites go down, at exactly the same time, the maximum data loss would be 15 minutes.

A full database backup is done daily.

Monitoring and Alerts

We have offices in the UK and Australia, where the operations team monitor the site 24*7.

Continual monitoring of the system is done through using a variety of tools including:

  • Log Entries
  • Loggly
  • Microsoft Application Insights
  • Serilog with Seq
  • Google Analytics

We also have automated tests that run continuously, from three locations: Chicago, Dublin and Sydney. These tests perform basic availability and responsiveness checks and notify us immediately if the web site becomes unavailable from any of these locations.

Any and all alerts are e-mailed to dev and ops as well as being available to development and operations teams for further analysis.

Disaster recovery

Backups are tested daily through being restored to our test environment.

Cessation of Trade

In the unlikely event that we cease trading, we will provide, as a minimum, one month’s access to the system, with the aim of providing three months.