The 3.5-inch HDD is targeted at the data center where the 15TB drive can be slotted into a 4U rack to create a 900TB storage unit, or 60TB more than was previously possible with 14TB hard drives in the same size chassis, according to Western Digital.
Western Digital expects the new 15TB drives to be used to store video footage captured by smart city 4K surveillance cameras, which can produce about 28TB over half a year.
As with the 14TB hard drives, the 15TB hard drive uses host-managed SMR (shingled magnetic recording), a method of writing data to disk that is slow but also allows for greater density.
It's suited to workloads that require sequential writes and, aside from video surveillance, it could be useful for object storage and cloud services.
Western Digital customer Dropbox has talked about how it's using 14TB SMR HDDs to build Magic Pocket, its in-house exabyte storage system separate from AWS infrastructure it has traditionally relied on.
Western Digital, perhaps better known as WD, announces a series of products and initiatives designed to reflect the company they've become - and not the disk drive they used to be. Marketing hype? Or do they really have the goods?