Item	Description
Bandwidth	The bandwidth for accessing Zettabyte Object Storage (ZOS) is limited by both the local Internet capacity and individual user bandwidth. Each eSurfing Cloud account in every region has an uplink bandwidth cap of 10 Gbit/s and a downlink bandwidth cap of 10 Gbit/s.
Queries Per Second (QPS)	Each eSurfing Cloud account in every region has a QPS cap of 10,000, with 5,000 write request and 5,000 read request caps.
Bucket	Once configured, the bucket name and the region where the bucket resides cannot be changed. The bucket name must be globally unique and cannot be duplicated. By default, each resource pool can contain up to 100 buckets. To request an increase in this quota, submit a ticket. The maximum quota is 1000 buckets. A bucket created after September 30, 2023 is allowed to contain up to 400 million objects. Upon reaching this limit, creating new objects may be restricted. For buckets created before September 30, 2023, we recommend maintaining a single-bucket quota of no more than 400 million objects. If you require an increase beyond this limit, please submit a ticket for technical support.
Object	The maximum size for single objects uploaded through the console is 5 GB. The maximum size for single objects uploaded through the API is 48.8 TB. Versioning is disabled for buckets by default. Once objects are deleted, they cannot be restored. Exercise caution during operations.
Resource Package	You must activate the ZOS service before you can buy resource packages. A resource package cannot be shared among resource pools. You need to purchase a separate resource package for each resource pool. The resource package takes effect immediately upon payment. If your usage exceeds the monthly package quota, the billing mode will change to pay-as-you-go automatically. A newly purchased resource package cannot cover the already generated resource usage. Annual packages can only be used to offset usage of billing items including the storage capacity and outbound traffic over the Internet. You can buy multiple resource packages at the same time. However, you cannot upgrade a resource package.
Log Storage	Log storage takes effect immediately after being enabled. Logs are generated on the hour one or two hours later. For example, if you enable this feature at 8:05, logs are generated at 9:00 or 10:00.
Versioning	Once enabled, versioning cannot be disabled, but it can only be suspended.
Data Redundancy Policy	Once selected, the data redundancy policy cannot be changed. When multi-AZ storage is selected, data is stored in multiple availability zones within the same region, providing higher availability. When single-AZ storage is selected, data is stored in a single availability zone. Multi-AZ storage incurs more charges.
Lifecycle Rules	You can configure a maximum of 1000 lifecycle rules for a bucket.

Zettabyte Object Storage

Limitations