When the disk is powered off or in idle, the heads of the disk are parked here The parking ramp is the orange part behind the center. Paul Alcorn of Tom's Hardware pointed out that of the 3 TB hard disk drive models that were in service with Backblaze, the ST3000DM001 was the only drive without a rotational vibration sensor that counteracts excessive vibration in heavy-usage cases. Hruska provided supplier-change or part substitution, shipping of substandard hardware to increase profits, and Backblaze's use of consumer hard drives in an enterprise environment as possible explanations.
Hruska pointed out that Seagate cut the warranty for these drives, along with most other hard disk drive manufacturers, from three years to one year in 2012. Joel Hruska of ExtremeTech noted that Backblaze was unable to explain the high failure rates of the ST3000DM001 compared to other products. Other 3 TB hard drives that Backblaze placed in service in 2012, which was operated in a similar environment as the Seagate drives, did not show signs of increased failure. Backblaze noted that the failure rates of the ST3000DM001 did not follow a bathtub curve typically followed by hard disk drive failure rates, instead having 2.7% failing in 2012, 5.4% failing in 2013, and 47.2% failing in 2014. Backblaze, which normally used HGST 3 TB hard drives, was only able to find Seagate 3 TB drives in "decent quantity". Īccording to Backblaze, the company switched to Seagate 3 TB hard drives after the 2011 Thailand floods disrupted the supply of hard drives and increased their prices by 200–300%. Only 251 of the 4,190 ST3000DM001 hard drives placed in service in 2012 were still in service as of 31 March 2015. Failures Observations at Backblaze īackblaze, a remote backup service company, observed that its ST3000DM001 drives have failed at rates far higher than the average of other hard drives. He said he was "personally OK" with the lower performance under heavy loads as long as the drive is used together with a solid-state drive (SSD) in a system.
ST3000DM001 as external hard drives in retail packagingĪnand Lal Shimpi of AnandTech noted that the ST3000DM001 is "a bit faster in sequential performance than the old Barracuda XT, at lower power consumption" and that "Seagate appears to have optimized the drive's behavior for lower power rather than peak performance". As part of the release of its 1 TB-platter drives, Seagate announced that it was phasing out its Barracuda Green line of 5900 RPM hard drives. The drive uses a 40 nm dual-core LSI controller and 64 MB of DDR2-800 as the DRAM cache.
The ST3000DM001 uses three 1 TB platters, compared to five platters in the previous generation Barracuda XT drive, and has a spindle speed of 7200 RPM. The failure rates were approximately 5.7 times higher in comparison to other 3 TB drives, for which Seagate faced a class-action lawsuit. This particular drive model was reported to have unusually high failure rates, due to a parking ramp that was made from different materials. It has a capacity of 3 terabytes (TB) and a spindle speed of 7200 RPM. The ST3000DM001 is a hard disk drive released by Seagate Technology in 2011 as part of the Seagate Barracuda series.
A ST3000DM001 drive manufactured in December 2012
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