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IBM 1311磁盘存储器是 IBM 1440数据处理系统所用的一种新部件。该装置主要由两个部分——磁盘组和驱动器组成。操作者可把磁盘组装到驱动器上或从驱动器上卸下,整个操作时间不需一分钟。一个磁盘组有六个磁盘。磁盘组的高度为3时,直径为14时,重量不超过十磅。IBM 1440可与五个驱动器连用,而每个驱动器可放置一个磁盘组。每组可存储信息约3,000,000位,五组共存储信息15,000,000位和100,000个地址单元。而且由于磁盘组可以随时更换,所以存储器的容量实际上可以任意加大,以至无限。
IBM 1311 disk storage is a new part of the IBM 1440 data processing system. The device consists of two parts - the disk group and drive components. The operator can assemble the disk to the drive or remove it from the drive, and the entire operation takes less than a minute. A disk group has six disks. Disk group height of 3, the diameter of 14, the weight of not more than ten pounds. The IBM 1440 can be used with five drives, one for each drive. Each group can store about 3,000,000 bits of information, and five groups store a total of 15,000,000 bits and 100,000 address locations. And because the disk group can be replaced at any time, so the memory capacity can be arbitrarily increased, and even unlimited.