Creating a Bucket
A bucket is a container that stores objects in OBS. Before you store data in OBS, you need to create a bucket.
An account can create a maximum of 100 buckets and parallel file systems.
Procedure
- In the upper right corner of the OBS Console homepage, click Create Bucket.
- Configure bucket parameters.
Table 1 Bucket parameters Parameter
Description
Region
Geographic area where a bucket resides. For low latency and faster access, select the region nearest to you. Once the bucket is created, its region cannot be changed.
AZ
Isolated physical location where a bucket resides. If a region has multiple AZs, you can create buckets in clusters in different AZs and implement cross-AZ disaster recovery using cross-cluster replication. For details, see Cross-Cluster Replication.
Cluster Group
Cluster where a bucket resides. OBS provides cross-cluster replication to implement cross-AZ disaster recovery. For details, see Cross-Cluster Replication.
Bucket Name
Name of the bucket. A bucket name must be unique across all accounts and regions. Once a bucket is created, its name cannot be changed.
According to the globally applied DNS naming rules, an OBS bucket name:
- Must be unique across all accounts and regions. The name of a deleted bucket can be reused for another bucket or a parallel file system at least 30 minutes after the deletion.
- Must be 3 to 63 characters long. Only lowercase letters, digits, hyphens (-), and periods (.) are allowed.
- Cannot start or end with a period (.) or hyphen (-), and cannot contain two consecutive periods (..) or contain a period (.) and a hyphen (-) adjacent to each other.
- Cannot be formatted as an IP address.
NOTE:
When you access OBS through HTTPS using virtual hosted-style URLs, if the bucket name contains a period (.), the certificate verification will fail. To work around this issue, you are advised not to use periods (.) in bucket names.
Cluster Type
- Public cluster: If you select this option, the bucket you are creating will be in a public cluster shared with others.
- Dedicated cluster: If you select this option, the bucket you are creating will be in the dedicated cluster you purchased.
NOTE:
The cluster type feature is only available to users who have purchased dedicated clusters. For the other users, the bucket they create is in a public cluster by default.
Disaster Recovery
- Disable: Data is stored only in one single AZ at a lower cost.
- Enable: Data is redundantly stored in two AZs in the same region. This delivers a higher reliability but costs more. Once enabled, the two-AZ disaster recovery cannot be disabled.
Data Redundancy Policy
- Multi-AZ storage: Data is stored in multiple AZs to achieve higher reliability.
- Single-AZ storage: Data is stored in a single AZ, with lower costs.
Once a bucket is created, the data redundancy policy cannot be changed, so choose the policy that can meet your needs.
Bucket Policy
Controls read and write permissions for buckets.
- Private: No access beyond the bucket ACL settings is granted.
- Public Read: Anyone can read objects in the bucket.
- Public Read and Write: Anyone can read, write, or delete objects in the bucket.
- Click Create Now.
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