684JT: Dell 2TB 3.5 inch 7.2K HDD Seagate ST2000NM013A

Dell part number 684JT is a 2TB 3.5-inch 7.2K rpm hard drive with 512n sectors. MD1400 and MD1420 enclosures support it as Seagate model ST2000NM013A at firmware CSJA, and it is not self-encrypting.

Seagate makes ST2000NM013A as part of the Exos 7E8 SAS family, a 512N model with Instant Secure Erase, which can cryptographically erase user data when a drive is repurposed or scrapped. The drive has 3 read/write heads and formats to 3,907,029,168 sectors at 512 bytes; the block size can be changed to 520 or 528 bytes.

The interface is dual-port SAS at 12, 6 or 3 Gb/s, with up to 1200 MB/s per port instantaneous transfer and 100 to 216 MiB/s sustained. The spindle turns at 7200 RPM with 4.16 ms average rotational latency. Seagate specifies a 2,000,000-hour MTBF, a 0.44 percent annualized failure rate, one nonrecoverable read error per 10^15 bits and a rated workload below 550 TB per year.

Standard 3.5-inch dimensions apply, 26.1 mm tall, at 620 g for 2TB models. Features include a 128-deep task set, SAS Power Disable, Seagate RAID Rebuild, Idle Read After Write and support for SAS expanders.