Help Center> Object Storage Service> User Guide (Paris Region) > FAQ> OBS Basics> What Are the Factors That Affect Upload and Download Speed of OBS?
Updated on 2024-03-04 GMT+08:00

What Are the Factors That Affect Upload and Download Speed of OBS?

The OBS upload and download speed may be affected by:

  • The default upper limit of the OBS read/write bandwidth allowed for a single account: 16 Gbit/s (which means the total GET and PUT bandwidths over both public and private networks)

    If the actual bandwidth reaches this upper limit, flow control will be triggered.

  • Bandwidth of the purchased VM NIC

    If the NIC bandwidth is lower than 16 Gbit/s, the node bandwidth will be limited by the VM bandwidth. You need to purchase multiple VMs to run concurrently to reach 16 Gbit/s.

  • Disk I/O and resources consumed by other processes