A caseless file lookup in a distributed file system is disclosed. A request to store a file in a volume may be received. In response to the request, the type of client system issuing the request may be identified. Based on the type of client system that has been identified, a first hash value or a second hash value may be calculated for the name of the file to generate and assign a hash value to the file. The file may be stored in a storage resource based on the first or second hash value that has been generated for the file.