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Why is file system data size different from object storage usage?

  • Random write produces more slices than other write patterns, causing higher actual storage usage in object storage. After a large number of random writes / overwrites, many slices will be generated, but many of these slices will continue to occupy space in the object storage even if they are already overwritten and become stale data. However, they will be compacted and released via background job, preventing object storage leaks.
  • If trash is enabled, deleted files as well as slices that has already been compacted will be kept for a specified period of time, and then be garbage collected (also carried out in background job).
  • If compression is enabled, object storage usage may be smaller than the actual file size (depending on the compression ratio of different types of files).
  • Billing size may vary with different storage classes across different service providers, For example, the minimum billable size for Alibaba Cloud OSS IA storage is 64KB. If a file is smaller than 64KB, it will be calculated as 64KB.
  • On-prem For self-hosted object storage services, for example MinIO, actual data usage is affected by storage class settings.

Which public cloud and region is supported?

Currently, all regions from Amazon Web Service (AWS), Google Cloud Platform (GCP), Microsoft Azure, Alibaba Cloud, Tencent Cloud, Huawei Cloud, UCloud, QingCloud, Qiniu, Baidu Cloud, Kingsoft Cloud, Netease Cloud, JD Cloud, and DigitalOcean are supported (many region may not open for public).

Any public cloud which supports Linux instance and object storage, could be easily supported by JuiceFS. If a public cloud or a region is not listed in web console, please contact us.

JuiceFS also supports self-hosted deployment in the enterprise's own public cloud VPC and data center, contact us if you're in need.