What Are the Differences Between System Disks and Data Disks?

• A system disk runs the server OS. It is like drive C in a PC.

  When a server is purchased, a system disk is automatically purchased and attached. You cannot purchase a system disk separately. The maximum size of a system disk is 1,024 GiB.

• Data disks store the server data. They are like drive D, drive E, and drive F in a PC.

  Data disks can be purchased during or after the server purchase. If you purchase data disks during the server purchase, the system will automatically attach the data disks to the server. If you purchase data disks after the server purchase, you need to manually attach the data disks. The maximum size of a data disk is 32,768 GiB.

If one system disk already meets your business needs, you do not need to purchase data disks. As your business grows, you can purchase data disks when needed.

If the disk paths in your service systems cannot be changed or are difficult to change, you are advised to purchase data disks according to your system planning.