Previously they were classified into genus Micrococcus, but have now been removed from Micrococcus based on phylogenetic and chemotaxonomic analysis . This bacterial cluster consists of nine species and is generally considered to be non-pathogenic commensals that colonize the skin, mucosa and oropharynx.
Maximum disk size: 4 gigabytes. Maximum file size: 4 gigabytes. Maximum number of files on disk: 65,517. Maximum number of files in a single folder: 512 (if I recall correctly, the root folder / had a lower limit of 128). FAT32. There's no practical limit on the combined sizes of all the files in a folder, though there may be limits on the number of files in a folder..
Note that all these size limits are based, not on the original file size, but the MIME-encoded copy. The common Base64 encoding adds about 33% to the original file size, meaning that an original 20MB file could exceed a 25MB file attachment limit.