G2G54: Dell (ST1200MM0099 – 1XH230-150) 1.2TB 2.5 inch SAS Server HDD

G2G54 is the Dell part number for a 1.2TB 2.5 inch SAS hard drive that carries the Seagate model ST1200MM0099, a 512 native Instant Secure Erase model from the Seagate Enterprise Performance 10K HDD v9 family. The spindle turns at 10.5K rpm with 2.9 ms average rotational latency, and the dual-port SAS interface runs at 3.0, 6.0 or 12.0 Gb/s with a 1,200 MB/s maximum instantaneous rate per port.

The 1,200 GB capacity point uses four read/write heads. Logical block size defaults to 512 bytes, with 520 and 528 selectable, and sustained transfer for 512 native models runs from 124 to 238 MiB/s. Mean time between failures is 2,000,000 hours, an annualized failure rate of 0.44 percent, and unrecovered read errors at less than one sector in 10^16 bits.

Average idle draw at 12.0Gb mode is 3.65 W from the 5 V and 12 V rails. The drive weighs 0.191 kg (0.422 lb), operates across a 5 to 55 C drive temperature range, and mounts vertically, horizontally or top down. SAS Power Disable, RAID Rebuild and support for up to 32 initiators are part of the feature set.

Other Dell 2.5 inch 10K SAS drives include the 300GB Seagate PGHJG and the 1.2TB Western Digital T6TWN.