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The Constellation ES.3 ST3000NM0023 is a 3 TB enterprise-grade 3.5-inch hard drive with a 7200 rpm spindle, 128 MB cache and a SAS 6Gb/s interface. It is built for always-on servers, RAID arrays and storage shelves rather than a desktop PC, and its SAS connection will not plug into a consumer SATA port without a SAS controller. Against SATA drives of the same capacity it offers dual-port SAS connectivity and a higher workload rating, but it is louder, hotter and older than current nearline drives. Buy it for a server or NAS that already has SAS backplanes, not for a home desktop build.
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Lowest price we've seen: $100.00 on Nov 10 at Newegg. Tracked across 2 stores since Nov 10.
Owners are mostly server and storage administrators who value the drive's reliability in RAID arrays and its steady throughput. Complaints center on noise, heat and the SAS-only connection tripping up buyers who expected a SATA drive.
