That's exactly what IBM did for the world's first computer with a disk drive: the RAMAC 305.

这正是 IBM 为世界上第一台带有磁盘驱动器的计算机所做的：RAMAC 305。

While great for storage, this was not nearly fast enough for memory, so the RAMAC 305 also had drum memory and magnetic core memory.

虽然这对于存储来说非常好，但对于内存来说速度还不够快，因此 RAMAC 305 还具有磁鼓内存和磁芯内存。