CORRECTION: internal rewrite of storage engine to a max of 18 Billion terabytes. Blocks are not 640MB, just the individual pieces are. 640MB is the size of a compressed single piece of virtualized disk space.
更正：将存储引擎内部重写为最大 180 亿 TB。块不是 640MB，只是单个块。 640MB 是压缩后的单个虚拟磁盘空间的大小。