The DTTN is designed to operate 24 hours a day, seven days a week
and the whole year round, with a maintenance window of six hours every
three months, and a targeted availability in excess of 99%. In the
event of a major disaster to the primary data centre, DTTN services
are targeted to resume on the secondary data centre within two hours
with no loss of data.
On average, each document sent through the DTTN is targeted to be processed, validated, transformed and delivered within 10 minutes - that is, some documents will be processed in less than 10 minutes, and some will be processed in more than 10 minutes, while almost all (95%) of the documents are targeted to be processed within 30 minutes.