syn_anandtech: Seagate Announces Enterprise Capacity 12 TB HDD: 2nd-Gen Helium-Filled Hard Drives

Seagate Announces Enterprise Capacity 12 TB HDD: 2nd-Gen Helium-Filled Hard Drives

Seagate has introduced its second-generation of helium-filled HDDs. These drives will be aimed at capacity-demanding enterprise and cloud applications, and the new drives store up to 12 TB of data. The new drive uses eight platters, which is more than the first generation model, but its power consumption remains below typical air-filled HDDs. The new capacity point from Seagate should enable customers to increase the amount of data they store per standard rack by 20% when compared to previous-gen models.

The Seagate Enterprise Capacity v7 3.5-inch HDDs are based on the company’s seventh-gen enterprise-class platform, with multiple features designed to reduce the number of errors, as well as reducing the vibration impact on internal components and improving the security and the endurance of the device. Traditionally such drives have more robust mounting mechanisms for internal components anyway, such as the motor, and various vibration and environmental sensors to guarantee predictable performance and reduce risks. In addition, the new HDDs support PowerChoice technology that helps to manage idle power consumption. The new PowerBalance tech enables operators of datacenters to balance power consumption and IOPS performance of the hard drives. When compared to the previous-gen Enterprise Capacity HDDa, the new ones support RSA2048-signed firmware with a secure download and diagnostics (SD&D) feature that prevents unauthorized access, modification or installation of a tampered firmware.

The new Enterprise Capacity v7 3.5-inch 12 TB HDD has eight perpendicular magnetic recording (PMR) platters, each with a 1.5 TB capacity. This comes with 16 heads, and rotates at 7200 RPM. Cache is listed as 256 MB for each drive. Due to higher areal density and some other optimizations, the new-gen enterprise HDDs have up to a 261 MB/s maximum sustained transfer rate, which is a little bit higher than the helium-filled drives introduced last year. The random write performance of the new drives is also slightly higher when compared to that of their predecessors (it's still worth noting that 400 IOPS is behind that of even entry-level SSDs by orders of magnitude). Moreover, despite the addition of a platter, the maximum operating power of the new Seagate Enterprise Capacity Helium HDDs seems to be similar when compared to that of the first-gen helium hard drives, at around 8 W - 9 W (see the table for details). At the same time, the average idle power consumption of the new HDDs is slightly higher when compared to that of their predecessors.

Comparison of Seagate's Helium-Filled HDDs
		Seagate Enterprise Capacity v6 10 TB SATA	Seagate Enterprise Capacity v6 10 TB SAS	Seagate Enterprise Capacity v7 12 TB SATA	Seagate Enterprise Capacity v7 12 TB SAS
Capacity		10 TB		12 TB
RPM		7200 RPM
Interface		SATA 6 Gbps	SAS 12 Gbps	SATA 6 Gbps	SAS 12 Gbps
DRAM Cache		256 MB
Maximum Sustained Transfer Rate		254 MB/s		261 MB/s
Random Read/Write 4K QD16 WCD		170/370 IOPS		170/400 IOPS
Average Latency		4.16 ms
Rated Workload		Equivalent of 550 TB of Writes per Year
Acoustics	Idle	28 - 30 dBA	unknown
	Seek	32 - 34 dBA	unknown
Power Rating	Idle	4.5 W	5.5 W	5.0 W	5.5 W
	Random Write	8.0 W	9.0 W	7.8 W (50% read/ 50% write)	9.3 W (50% read/ 50% write)
	Random Read	8.4 W	9.4 W
MTBF		2.5 million hours
Warranty		5 Years
Price		~$490	~$505	unknown

The family of Seagate’s 12 TB Enterprise Capacity 3.5 HDDs includes 12 models with SATA 6 Gb/s or SAS-12 Gb/s interfaces, 4Kn or 512e sectors, self-encrypted drives (SEDs) as well as SED-FIPS HDDs. All of the hard drives are rated for 2.5 million hours MTBF and come with a five-year warranty.

Lineup of Seagate's Enterprise Capacity 3.5" 12 TB Helium HDDs
	Standard 4KN	Standard 512e	SED 4KN	SED 512e	SED-FIPS 4KN	SED-FIPS 512E
SATA	ST12000NM0047	ST12000NM0007	ST12000NM0057	ST12000NM0017	ST12000NM0157	ST12000NM0137
SAS	ST12000NM0067	ST12000NM0027	ST12000NM0077	ST12000NM0037	ST12000NM0167	ST12000NM0147

Seagate is expected to start shipments of its 12 TB HDDs shortly, but pricing is unknown.