HCSA provides storage devices that are connected to Alibaba Cloud Object Storage Service (OSS) and deployed in your own, on-premise data center. HCSA devices provide dedicated high-speed transmission channels for you to connect your Network Attached Storage (NAS) and block storage to the cloud. Additionally, you can choose to deploy 1-Gbit/s or 10-Gbit/s high-speed leased lines and manage your own AccessKeys for connecting to Alibaba Cloud OSS.