Impossible Cloud Documentation
  • Company overview
    • What is Impossible Cloud
  • Getting Started
    • Getting Started with Impossible Cloud Storage
      • Setting up
      • Next steps
      • Getting support
  • Feature Release Notes
    • 29th April 2025
  • Impossible cloud storage Guide
    • Storage Console URLs and API Endpoints
    • Storage Console
      • Accessing the console
        • Signing up for Impossible Cloud Storage
        • Signing in to Impossible Cloud Storage
        • Session lifetime limits
      • Interacting with the console
        • Navigating the menu
        • Using the panel
    • Buckets and Objects
      • Creating a bucket
      • Storing objects in a bucket
      • Interacting with objects
      • Creating folders in a bucket
      • Interacting with folders and buckets
      • Public File Sharing via URLs
      • Emptying a Bucket
      • Limitations
      • Versioning and object lock
        • Enabling versioning
        • Using versioning
        • Enabling object lock
        • Using object lock
    • Access keys
    • CLI User Guide
      • AWS CLI installation instructions
      • AWS CLI configuration
      • Using Impossible Cloud with AWS CLI
      • AWS CLI basic commands
      • AWS CLI advanced commands
        • Examples
      • AWS CLI for cloud-to-cloud migration scenarios
      • AWS CLI Credentials & Config chain
      • AWS CLI: IAM
        • Limitations
        • List of supported operations
        • Operations Descriptions and Examples
    • Usage
      • Storage Calculation
      • Fair use policy
    • Profile settings
      • Multi-Factor Authentication (MFA)
        • Enabling and Disabling MFA
        • MFA Reset
        • Organization-Wide Policies
  • Security
    • Securing Your Data
    • Identity Access Management (IAM)
      • Managing Users
      • Managing Groups
      • Managing Policies
    • CORS support
      • Limitations
      • CORS Configuration
  • Integrations with other applications
    • Backup Software Integrations Guides
    • Cloud Storage Browsers Integrations Guides
    • Media Management Software Integrations Guides
    • NAS Applications Integrations Guides
  • Other support resources
    • Impossible Cloud Management Console (ICMC)
    • Knowledge Base
    • Help Center
    • System Status
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  • Number of buckets limitations
  • Restrictions on Operating System/Filesystem level
  • S3 API limitations
  • Object conflicts

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  1. Impossible cloud storage Guide
  2. Buckets and Objects

Limitations

Number of buckets limitations

You can keep any quantity of items in a single bucket, and your account can have a maximum of 100 buckets.

Restrictions on Operating System/Filesystem level

Object names are primarily limited by the local operating system and filesystem. Some operating systems such as Windows restrict certain characters in file names, such as:

; ^ / * | " &

Please note that this list may not be exhaustive and the restrictions may vary based on the operating system and filesystem in use. Consult the documentation of your operating system vendor or filesystem for a comprehensive list of restrictions for your specific situation.

Impossible Cloud Storage currently does not support the following object names:

  1. Forward slashes at the beginning.

  2. Empty path segments.

S3 API limitations

Max size of any object

50 TiB

Min size of any object

0 B

Max length for bucket names

63

Max length for object names

1024

Max length for / separated object name segment

255

Object conflicts

Objects must have names that are unique and do not conflict with their parent objects. To prevent naming conflicts, applications must assign keys to objects that are unique and non-conflicting. For instance, the second PUT operation in the following sequence will fail because of a naming conflict with the object created by the first operation:

PUT <bucketname>/xxx/yyy/textfile.txt
PUT <bucketname>/xxx/yyy
PUT <bucketname>/xxx/yyy
PUT <bucketname>/xxx/yyy/textfile.txt

To avoid issues, please ensure that object names are always unique and do not conflict with their parent objects.

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Last updated 1 year ago

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