Raid storage systems having arrays of solid-state drives and methods of operation

A controller for use in a RAID storage system, the RAID storage system comprising an array of solid-state drives, the controller comprising:

• software or circuitry configured to operate to combine the array of solid-state drives into a logical unit, utilize data striping to segment data to form data stripe sets comprising data blocks that are written to individual drives of the array of solid-state drives, utilize distributed parity to write parity data of the data stripe sets to individual drives of the array of solid-state drives, and write the data blocks and the parity data to different individual drives of the array of solid-state drives;
• and
• means for detecting the number of data blocks of at least one of the data stripe sets,
• wherein the RAID storage system comprises means for inverting bit values of the parity data depending on the number of data blocks detected by the detecting means.

A controller for use in a RAID storage system, the RAID storage system comprising an array of solid-state drives, the controller comprising:

• software or circuitry configured to operate to combine the array of solid-state drives into a logical unit, utilize data striping to segment data to form data stripe sets comprising data blocks that are written to individual drives of the array of solid-state drives, utilize distributed parity to write parity data of the data stripe sets to individual drives of the array of solid-state drives, and write the data blocks and the parity data to different individual drives of the array of solid-state drives;
• means for detecting the number of data blocks of at least one of the data stripe sets;
• and
• means for inverting bit values of the parity data depending on the number of data blocks detected by the detecting means.