| 1. | Taking all sorts of factor like cost and storage capability into account , people mostly use tertiary storage equipment like tape library or optical disk library as the primary storage medium to store massive data . at present , a three layer storage system composed of main memory , disk and tertiary storage has already been the primary storage structure of massive data
从成本和存储容量等因素综合考虑,目前人们大都采用将磁带库、光盘库等第三级存储设备作为海量数据的主要存储介质,并与主存、磁盘一起构成一个三级的存储系统作海量数据的存储结构。 |
