Difference Description
Last updated:2025-12-05 18:42:25
Cloud Dedicated Zone (CDZ) provides you with an operating experience and APIs that are basically consistent with those of the public cloud. However, due to the characteristics of its deployment environment and exclusive resources, some product features may have differences.
This document details the differences between CDZ and the standard public cloud in terms of product features, performance, and usage limits, helping you better plan and use CDZ resources.
Storage Product Differences
CDZ - CSP
CDZ - Cloud Storage Private (CSP) is a localized and exclusive version of Tencent Cloud Object Storage (COS). It is deployed in your CDZ environment to provide you with object storage services featuring localized data and exclusive resources.
Feature Limitations
Compared with COS, CSP currently has the following limitations:
Object upload and download operations in the console are not supported.
Only the standard storage layer is supported. Other storage layers, such as infrequent access and archive storage, are not supported.
Static website hosting is not supported.
Object origin-pull settings are not supported.
Temporary link access is not supported.
Server-end encryption is not supported.
Object tags are not supported.
Hotlink protection and cross-origin access settings are not supported.
Bucket replication is not supported.
Domain name transfer and management are not supported.
Up to 20 million objects per bucket are supported.
In addition, some features that require integration with other cloud products are also temporarily not supported:
Log management is not supported.
Content review is not supported.
Data processing is not supported.
Data workflow is not supported.
Function calculation is not supported.
File system gateway is not supported.
Compared with COS, CSP also has performance limitations.
Since all loads are handled by on-premises servers, the achievable performance levels depend on the scale of the on-premises servers. In addition, all operations of CSP require authentication through Cloud Access Management (CAM) of the public cloud, so the additional network latency will also reduce the performance of CDZ - CSP. For example, in a typical cluster with 3 storage nodes, the expected performance level is 1,000 QPS (for small file scenarios) or 500 MB/s bandwidth (for large file scenarios), which is lower than the 30,000 QPS or 15 Gbit/s per bucket of the public cloud.
Product Billing Rule Description
The payment mode is prepaid, requiring the purchase of CSP resources through a capacity-based committed use method. After that, Tencent Cloud will deploy the cluster according to the purchased scale and provide storage services.
Billing Item | Billing Cycle | Billing Mode | Billing Rule |
Storage capacity fee | Month | Pay-as-you-go | Monthly settlement Storage capacity fee = Monthly storage capacity x Unit price of storage capacity Monthly storage capacity = Sum of daily storage capacity in the current month/30 Daily storage capacity = Average capacity obtained from time-based sampling on the day |
Read-write request fee | Month | Pay-as-you-go | The number of read-write requests refers to the number of request instructions sent. The fee is calculated based on the total number of requests in the month. Requests are charged regardless of success or failure. The minimum billing unit for requests is 10,000 times. If the number of requests in the month is less than 10,000, the fee is calculated based on the actual number of requests. |
Public network traffic fee | Month | Pay-as-you-go | Traffic that generated when data is downloaded from the cloud to your local end or client through the regular network (the public Internet). Pay-as-you-go: Public network downstream traffic (GB) x Unit price per GB. Note: This part is usually not included in committed use and requires payment based on actual public network usage. |
Usage Instructions
Configuration management: The CSP console is integrated into the Tencent Cloud console. You can select a dedicated cluster in the availability zone (AZ) of CDZ in the COS console to perform operations such as bucket creation, deletion, and configuration, which is consistent with the experience of using COS.
Data read and write: The method for accessing data on CSP is consistent with that of COS, and it is compatible with COS APIs and SDKs. There is only one key point to note: when accessing CDZ - CSP, you need to specify
<CDZ-Zone-name> corresponding to the target CDZ and concatenate it to the Region field. For example, the access address of a COS bucket is generally <BucketName-APPID>.cos.<Region>.myqcloud.com. When accessing CSP, you need to change the bucket address to <BucketName-APPID>.<CDZ-Zone-name>.cos-cdz.<Region>.myqcloud.com. Here, <CDZ-Zone-name> uniquely specifies a CDZ AZ to ensure that you can access the resources in this CDZ.
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