0WRRF: Dell 1.8TB 12Gbps SAS 2.5in SFF 10000 RPM (Toshiba AL15SEB18EQY)

0WRRF is the Dell part number for a 1.8TB 12Gb/s SAS hard drive in the 2.5 inch format that carries the Toshiba model AL15SEB18EQY. The AL15SEB series is Toshiba's enterprise performance line, aimed at mission critical servers, transaction-based applications and hybrid storage platforms.

The AL15SEB18EQY has a formatted capacity of 1,800 GB and spins at 10,500 rpm, which yields an average latency of 2.86 ms. The EQ models are 512e: the host sees 512-byte blocks while the disk stores 4,096-byte sectors, and 520 and 528-byte host block sizes map to 4,160 and 4,224-byte disk sectors. The trailing Y identifies the Sanitize Instant Erase option, which invalidates the recorded data almost at once.

A 128 MiB buffer sits in front of a sustained transfer speed of 260.0 MiB/s on a SAS-3.0 link that runs at up to 12.0 Gbit/s. Toshiba Persistent Write Cache protects data after an unexpected power loss. Write/read power at a 200 I/O load is 8.1 W and active idle is 4.6 W from 12 V and 5 V supplies, with 31 dB typical idle sound power.

Mean time to failure is 2,000,000 hours for 24 hours a day, 7 days a week duty. The drive operates from 5 to 55 C and tolerates 100 G of operating shock for 2 ms. Comparable Dell 1.8TB drives are the 2TRM4 and, in a 15,000 rpm class, the 1W7HC.