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OE version 4.5 introduces File-Level Retention (FLR). FLR enables the ability to lock files, preventing them from being modified or deleted until a specified retention date. This functionality is also known as write once, read many (WORM). FLR is available on the physical Dell Unity family as well as Dell UnityVSA systems. This feature is only available for file systems and is not available for VMware NFS datastores.
There are two versions of FLR available: Enterprise (FLR-E) and Compliance (FLR-C). FLR-E prevents file modification and deletion by users through access protocols such as SMB, NFS, and FTP. However, an authorized storage administrator can delete the entire file system even if it contains locked files. FLR-C prevents administrators from deleting a file system that contains locked files. The administrator must wait until all files to expire before the file system can be deleted. FLR-C also has other differences including a data integrity check, hard infinite retention, and snapshot restrictions. FLR-C is designed to meet the requirements of SEC Rule 17a-4(f).
Files in a FLR-enabled file system can be in one of the following states:
For more information about File-Level Retention, reference the Dell Unity: File-Level Retention (FLR) white paper on Dell Technologies Info Hub.