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SAS SSD drives use the legacy SCSI command set protocol. This command set worked well with traditional hard drives; however, as technology advanced, the protocol became inefficient for faster I/O processing and was surpassed by newer protocols with less overhead.
SAS SSD drives can deliver cost-effective performance for many applications at a lower cost per GB than NVMe SSD and Optane Storage class memory (SCM) drives. Consider SAS SSD drives for database environments where performance is not a priority and for those environments that might benefit from greater total available capacity in a limited data center space.