A system and method for loading a new data and searching data sets to identify data elements with the data set that meet user defined criteria. A notification that new data set is available is received by a first server, the new data set is transferred to the first server, and the first server stores the new data set and an old data. At least a portion of the old data set and the new data set are transferred from the first server to the second server, which is in communication with the first server, which stores the portions of the old data set and new data set. The second server receives user search requests and: (1) processes queries in response to the user search requests by running a first search process using the portion of the old data set prior to receiving a command to switch to the new data set; and (2) processes queries in response to the user search requests by running a second search process using the portion of the new data set after receiving the command to switch to the new data set.