Before using ZOS, we recommend acquainting yourself with fundamental ZOS concepts such as bucket, object, region, and endpoint. For more information, see Concepts.

ZOS provides the following features:

Feature	Description	Applicable Region
Storage Type	ZOS provides three storage types that are suitable for diverse data storage needs from frequently accessed to archival, including standard storage, infrequent access (IA) storage, and archive storage. Standard storage: This storage type provides robust reliability, high availability, exceptional performance, and low latency. It is suitable for scenarios that demand frequent access (multiple times per month) at high speeds. Examples of such scenarios include mobile applications, websites, audio/video content, social networking images, and big data analysis. IA storage: This storage type provides robust reliability and cost-effectiveness. It is suitable for scenarios that require infrequent access (approximately once per month) and lower storage costs, while still ensuring high real-time access speed when necessary. Examples of such scenarios include data backup and monitoring data storage. Archive storage: This storage type provides robust reliability at very low costs. Data can be accessed after being unfrozen. It is suitable for scenarios where data is stored for an extended period and accessed very infrequently (approximately once per year). Examples of such scenarios include archival data, medical images, and long-term backups.	All resource pools of ZOS.
Bucket Management	ZOS enables you to easily create, query, view, and delete buckets. Create buckets: Buckets are containers that store objects. In ZOS, you can store data only after creating buckets. Query buckets: You can search for specific buckets using their names. View buckets: You can view attributes of buckets, including their basic information, data statistics, and fundamental configurations. Delete buckets: You can remove empty buckets to reduce resource consumption.	All resource pools of ZOS.
File Management	ZOS allows you to upload, download, query, or share files, and upload segments of files or append to existing files. These features cater to your diverse file management needs. Upload files: You can upload files to existing buckets. To categorize files, create directories first, and then upload the files. Download files: You can download files from ZOS to your local devices. Query files: You can search for specific files using their names. Upload segments: You can divide a large file into smaller segments for uploading. Each segment represents a continuous part of the file. If a segment fails to upload due to network fluctuations, you only need to upload that specific segment again, saving overhead compared to uploading the entire file. Append to existing files: You can create an object of the appending type and add data to the end of that object. Share files: You can share files by providing links. Recipients can open the files by simply clicking on the shared links.	All resource pools of ZOS.
Bucket and file read/write permissions	ZOS allows you control access by setting bucket read/write permissions and bucket authorization policies. By default, ZOS resources are privately owned, and only owners can access the resources. You can set different permissions for a bucket and objects within the bucket. You have the option to grant role-based permissions for accessing resources. You can set a bucket or files to private or public read.	All resource pools of ZOS.
STS Temporary Authorization	This feature allows you to manage user roles and temporary permissions for accessing resources. With Secure Token Service (STS), you can create roles and grant those roles temporary credentials with a customized validity period and specific access permissions. These temporary credentials are referred to as STS tokens.	To use this feature, submit a ticket to apply for the necessary permissions.
Bucket ACL	Bucket access-control lists (ACLs) allow you to control which accounts can access buckets. Bucket owners can grant or modify the bucket ACLs to specify read/write permissions for these accounts.	ACLs are currently supported on Hong Kong 2 and Singapore 4 nodes. To use this feature, submit a ticket to apply for the necessary permissions.
Bucket Policies	Bucket policies control bucket access permissions. Bucket owners can grant other users specific permissions. They can customize bucket policies to define and manage bucket access permissions.	To use this feature, submit a ticket to apply for the necessary permissions.
Compliance-based Retention	This feature enables you to store and utilize data under the condition that you cannot delete or modify it.	To use this feature, submit a ticket to apply for the necessary permissions.
Lifecycle Management	Lifecycle management policies allow you to efficiently manage the lifecycle of objects. With policy-based automatic layered storage, you can define policies that automatically transition objects between different storage layers. For instance, objects can be periodically moved from standard storage to IA storage or archive storage. A unified namespace ensures that the access address for objects remains consistent after the transition.	All resource pools of ZOS.
Static Page Settings	ZOS allows you to configure a static website for objects within a bucket. By doing this, you can use the domain name of the bucket to access the static website hosted in that bucket.	All resource pools of ZOS (To use this feature, submit a ticket to apply for the necessary permissions.)
Cross-domain Access Settings	This feature enables you to build web applications using JavaScript and HTML5 to directly access resources in ZOS, without the need for proxy servers. External webpages, style sheets, and HTML5 applications hosted on different domains can reference web fonts and images stored in ZOS. This approach allows these resources to be shared across multiple websites.	All resource pools of ZOS.
Hotlink Protection	To prevent unauthorized hotlinking of user data in ZOS, the storage service offers referer-based hotlink protection using HTTP headers, as well as trustlists and blocklists.	All resource pools of ZOS.
Picture Processing	You can utilize SDKs to process images within buckets. These SDKs allow you to perform actions like cropping, zooming, watermarking, rotating, and format conversion. You can store the processed images in specific buckets. ZOS supports various image formats, including JPG, PNG, WEBP, BMP, and TIFF.	All resource pools of ZOS.
Bucket List	You can configure bucket list rules to query information about specific objects within the bucket, such as the quantity, size, storage type, and encryption status. This feature allows you to upload the generated bucket list to a specific bucket, querying information about a large number of objects and manage the objects within the bucket.	This feature is currently supported on Hong Kong 2 and Singapore 4 nodes. To use this feature, submit a ticket to apply for the necessary permissions.
Log Management	This feature allows you to query access data for buckets. Once you enable the log management feature for a bucket, ZOS automatically logs access requests to that bucket and generates log files, which are then written to the specified bucket.	All resource pools of ZOS.
Multiple Versioning	You can retain multiple versions of an object within a bucket. This feature allows you to easily retrieve objects and restore data quickly in the event of inadvertent operations or application faults. By default, ZOS versioning is disabled. In this scenario, if data is deleted or overwritten, it cannot be restored. When versioning is enabled, deleted or overwritten data is preserved as historical versions.	All resource pools of ZOS.
Bucket Quota	Bucket quota refers to the maximum capacity or quantity of objects that can be uploaded to a bucket. If the number of objects exceeds this quota, any additional uploads will fail.	To use this feature, submit a ticket to apply for the necessary permissions.
Fragment Management	This feature enables you to remove fragments generated in specific scenarios during the process of uploading file segments. By doing so, you can save storage space.	All resource pools of ZOS.
API	ZOS provides an HTTP API utilizing JSON data exchange format. You can call this API to send HTTPS request and receive HTTPS responses to interact with the ZOS backend. Using a different data transmission framework, ZOS provides APIs independent from the SDK, such as enabling API and data statistics API), to enable more management operations. Direct uploading and downloading of objects is a distinctive function of the SDK approach.	All

Zettabyte Object Storage