Databarracks backup infrastructure is based around an n+1 configuration. This simply means that all Databarracks storage and data centre infrastructure is redundant to ensure the availability of our backup systems and customer accessibility to data. We are naturally cautious and ensure that there are no single points of failure anywhere within our systems or data centre.

Examples of our n+1 infrastructure are as follows:

System Redundancy:

• Load balanced firewalls
• Clustered backup database servers
• Load balanced switches
• Four independent backup nodes for processing incoming data
• All redundant systems kept separately in different data centre areas
• System monitoring 24/7/365 using both Nagios and Cacti
• Mirrored operating systems
• RAID5 on all storage servers
• All storage servers replicated to a different data centre area
• All systems have multiple power sources and UPS

Data centre redundancy:

• Power - independent feeds direct from the national grid
• Backup generators allow the facility to run for 30 days in the event of a power loss
• n+1 redundant UPS into all data centre areas
• Fault tolerant, redundant core network
• Four independent communication links from different carriers
• CCTV with motion tracking
• Guarded by trained security guards with dogs 24/7/365

As well as ensuring that all of our backup systems are always available, the security and availability of our customers data is of course paramount. All data is stored on our RAID5 configured SANs, which give us a fast and reliabile way of saving and restoring customers data. RAID5 means that all data is stored on our SANs across multiple drives which means the data is not susceptable to individual disk failure. As well as this, all of our data is replicated, or copied in real-time to a second set of SANs which are kept in a different area of our primary data centre.

Combined with the local storage option of data within the customer's site, this means that there are always four copies of your data to retrieve from.

• 1. Your live data
• 2. Your local cached copy of your backup data
• 3. The primary copy of data on our systems
• 4. The seconday copy of data on our systems

Where additional replication is required, we can arrange for the data to be further replicated to our secondary data centre at the Greenham Common Airbase in Newbury, Berkshire.

We have built a storage system which is demonstrably the most secure available within our industry. Our systems are kept within a true TIER 4 ex-military data centre, arguably the most secure commercial data centre anywhere. All data is replicated across multiple SANs and stored in different parts of our facility seperated by 1,000s of tonnes of concrete.

We are also able to keep multiple copies of data across two data centres if required. Our secondary data centre in Newbury, Berkshire and is also a highly secure ex-military data centre within easy access of London.