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 5 mode is a complex redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if a single drive fails. Selecting this option requires 3 or more drives, and effectively one drive's worth of capacity is lost to maintain the parity data. This is a good option for users who want to protect their data but not lose as much capacity as mirroring requires.
This RAID 5 mode is a complex redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if a single drive fails. Selecting this option requires 3 or more drives, and effectively one drive's worth of capacity is lost to maintain the parity data. This is a good option for users who want to protect their data but not lose as much capacity as mirroring requires.
Complex redundancy option - reducing overall capacity in trade for keeping parity data that allows reconstruction of files if a single drive fails. Requires 3+ drives. Set up through the mdadm utility.
