As any existing software, Ceph is subject to minor and major releases. My entire series of posts has been realized using version Giant (0.87), but by the time I completed the series, Hammer (0.94) was released. Note that Ceph, as other linux softwares, uses a major release naming scheme based on the letter of the alphabet, so Giant is the 7th major release. Ceph releases both minor and major versions of the software, so it’s important to know how to upgrade it.