This post will tell you what server hard disk is.
Brief Introduction
The hard disk which is used on server is the server hard disk.
For users, the drive reliability is very important since the drive contains massive important data.

In addition, low-end servers can use common SATA hard disk.
Hot-swappable hard drives typically use SAS interface.
But the entire function must be supported by an array of cards and hard disk backplane.
This bang out shelf usually has external wrench.
Simple-swap hard drives are common drives.
Its shelf is blue.