Which connection protocol supports dual-ported drives and is optimized for backplane interconnections?

ATA (Advanced Technology Attachment) is an older parallel interface primarily for single-user systems and does not support dual-ported drives or offer backplane optimization.

SATA (Serial ATA) is primarily a single-ported interface designed for consumer and entry-level enterprise drives, lacking the native dual-porting and extensive backplane optimization of SAS.

IDE (Integrated Drive Electronics) is synonymous with ATA, an older parallel interface that does not support dual-ported drives or offer optimization for enterprise backplanes.

SAS (Serial Attached SCSI) is an enterprise-grade interface specifically designed to support dual-ported drives, which provides redundancy and failover capabilities essential for high availability. It is also optimized for robust backplane interconnections in servers and storage arrays, facilitating hot-swapping and dense drive configurations.