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Disk data format

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From Wikipedia, the free encyclopedia

The SNIA common RAID disk data format (DDF) defines a standard data structure describing how data is formatted across disks in a RAID group. The DDF structure allows a basic level of interoperability between different suppliers of RAID technology. The common RAID DDF structure benefits storage users by enabling in-place data migration or recovery after controller failure using systems from different vendors.[1]

DDF is an external metadata format that is compatible with the mdraid subsystem in the Linux kernel. The mdadm command-line utility is a part of the mdraid subsystem.[2]

References

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  1. ↑ "Common RAID Disk Data Format (DDF)". SNIA.org. Storage Networking Industry Association.
  2. ↑ "Chapter 21. Managing RAID Red Hat Enterprise Linux 8". Red Hat Customer Portal. Retrieved 2023-01-06.

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