A technician must expand storage by cabling a new 24-bay JBOD shelf to an existing rack server. The shelf's documentation lists external SFF-8644 (mini-SAS HD) connectors that run at 12 Gb/s per lane and require dual-ported drives so every disk can be reached through two redundant HBAs for multipath I/O. Which interface type on the server's host-bus adapter will meet all of these design requirements?
Serial Attached SCSI (SAS) is designed for enterprise backplanes and enclosures. SAS-3 delivers 12 Gb/s per lane, uses mini-SAS HD connectors such as SFF-8644 for external cabling, and every SAS drive exposes two independent ports so that redundant controllers can reach the same disk. SATA and its external variant eSATA top out at 6 Gb/s and are single-port only, so they cannot provide dual-path access. USB 3.2 Gen 2×2 offers high throughput but is a peripheral bus, not a block-storage interface intended for dual-port, multipath disk shelves.