Buying or upgrading a mainframe is a significant undertaking that many organizations put off for as long as possible. First and foremost, mainframe replacements or upgrades are enterprise-class IT investments that typically require a significant capital budget. In today’s economically-conscious atmosphere, where every single upgrade is meticulously scrutinized, government agencies and private enterprises are extremely cost sensitive to new capital investments. Secondly, mainframe systems, hardware and software are all historically very reliable. So much so that many organizations are willing to take the risk of delaying upgrades or new purchases for as long as possible.