Disk-drive performance characteristics

A disk-drive is like a big closet that stores all your data in different boxes. Imagine that you have a lot of toys and books spread out all over your room. If you want to put them away, you have to pick them up one by one and put them in boxes. Just like you need time to find and pick up each toy or book, a disk-drive needs time to find and read or write each piece of data.

Disk-drives have different characteristics that affect how long it takes to find and read or write data. One important characteristic is the spin speed. The disk-drive spins like a top, and the faster it spins, the faster it can find and read or write data. Another characteristic is the seek time, which is the time it takes for the disk-drive to move its arm to the right box to find the data. If the box is far away, it takes longer to find the data.

Disk-drives also have different capacities, which means they can store different amounts of data. Think of it like having different sized closets. Some are small and can only fit a few boxes, while others are big and can fit many boxes.

Overall, disk-drive performance depends on the spin speed, seek time, and capacity. The faster the spin speed and the shorter the seek time, the faster the disk-drive can find and read or write data. The bigger the capacity, the more data it can store.