YG2KH: Dell 10TB 3.5in HDD HGST HUH721010AL4200

YG2KH is a Dell 10TB 3.5 inch 7.2K rpm hard drive that maps to the HGST HUH721010AL4200. It is formatted 4Kn, carries firmware LS21, is supported in MD1400 and MD1420 storage enclosures, and is not self-encrypting (non-SED).

The Ultrastar DC HC510, previously known as Ultrastar He10, is a 3.5-inch helium-filled drive built on third-generation HelioSeal technology with PMR recording. In the model number HUH7210xxAL420y the code means 7200 RPM, xx TB capacity and 4Kn SAS 12Gb/s, and the final digit 0 means the Instant Secure Erase data security mode, so this model is not a self-encrypting drive.

The 10TB drive has a 256MB buffer, 4.16 ms average latency and a 26.1 mm z-height. SAS interface transfer rate tops out at 1200 MB/s. Sector sizes for 4Kn SAS are 4096, 4112, 4160 and 4224 bytes, and SAS models add NVC Quick Cache for better random writes. Typical idle power is 5.8 W for SAS.

Reliability is a 2.5M hours MTBF with a 0.35 percent AFR, a non-recoverable error rate of 1 in 10^15 bits read, and 600,000 load/unload cycles. The workload rating is 550 TB per year and operation is 24x7. A dual-stage micro actuator and Rotational Vibration Safeguard keep head positioning accurate in multi-drive enclosures, and the drive weighs up to 660 g.