Linux supports software-based drive arrays, which can be configured through the mdadm utility. Most of the array options are designed to provide some level of data redundancy, but the exact benefits and trade-offs vary.
This RAID 6 mode is a complex, double-redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if one or even two drives fail. Selecting this option requires 4 or more drives, and effectively two drive's worth of capacity is lost to maintain the parity data. This is a good option for users who want high levels of data protection.
This RAID 6 mode is a complex, double-redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if one or even two drives fail. Selecting this option requires 4 or more drives, and effectively two drive's worth of capacity is lost to maintain the parity data. This is a good option for users who want high levels of data protection.
Complex double redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if one or two drives fail. Requires 4+ drives. Set up through the mdadm utility.
