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- When data is uploaded to the storage, the retention period must be defined.
- During the retention period, the data is immutable, it cannot be altered or deleted.
- During the retention period, the data can be read or downloaded at any time.
- The retention period of the data cannot be decreased, it can only be increased.
- Many vendors provide legal hold or litigation hold which can override the retention period of the data in such a way that even when the retention period expires, the data will still be locked until the legal hold is active on the data.
- Some vendors only provide WORM support on a folder/container/bucket level and not for individual data. In this case, the system cannot be integrated directly with the storage WORM features. Alternatively, the system can 't be configured to align the application level retention configuration with the settings on the storage. For example Immutable Blob Storage.
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| Storage Vendor | Storage Model | File Operations | WORM Operations | Retention Period | Increase Retention | Legal Hold |
|---|---|---|---|---|---|---|
| Dell EMC | Centera | SDK | SDK | Yes | Yes | Yes |
| ECS using the Centera API/SDK | SDK | SDK | Yes | Yes | Yes | |
| Unity FLR | SMB | SMB File Attributes | Yes | Yes | No | |
| Isilon SmartLock | SMB | REST | Yes | Yes | No | |
| NetApp | SnapLock | SMB | SDK | Yes | Yes | No |
| Hitachi | Content Platform | REST | REST | Yes | Yes | Yes |
| iTernity | iCAS | SMB | SMB File Attributes | Yes | Yes | No |
| Amazon | AWS S3 | REST | REST | Yes | Yes | Yes |
| IBM | COS | REST (AWS S3) | REST | Yes | Yes | Yes |
| Warning |
|---|
Many of the WORM storage platforms support a default (or minimum) retention setting on the container/bucket level. This setting is not compatible with the system and cannot be used because the system can upload additional files to the storage (e.g. transcription file, transcoded video file) in which case the retention of these files is adjusted to match the original recording. If default/minimum retention is configured, the retention of these files could be longer than required which will cause unnecessary alerts in the system, because the system will not able to delete these additional files when the retention of the recording expired. |
WORM features in data management policies
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