Western Digital which made its HGST Ha10 10TB hard drives available for archival purposes last year has now made enterprise drives with same capacity available to storage world. WD Ultrastar He10 10 Tb hard disks hermetically seal helium gas in the drive to decrease friction. So, the new 3.5 inches Ultrastar He10 Hard disks consumes less power per terabyte of capacity than any previous drive the company has shipped.
According to the details available to the media and on the website of WD, the new drives use typical perpendicular magnetic recording to fit 10TB of capacity on seven platters with an areal density of 816Gbits per square inch.
Previously, WD through its HGST division released 8TB drives into the data storage market. The new Ultrastar He10 hard drives based on HelioSeal Platform represent 25% increase in capacity over the previous generation 8TB Ultrastar He8 HDD and uses 56% less watts/TB than traditional air filled HDDs.
Getting into deep specs, the drive uses as little as 0.5 watts per terabyte while idle; the SATA model uses 6.8 watts while operating and the SAS model uses 9.5 watts while spinning, which is still 56% less power than the previous generation.
Western Digital has credited its new Ultrastar He10 hard drives with a 2.5 million MTBF rating as well as a 5 year warranty. And these 7200RPM drives come with either a 6 Gbps SATA or 12Gbps SAS interface or have maximum sustained R/W data transfer rates of 249MB/sec and 225MB/sec
The highlight of these drives is that they need no additional software for the drives to function in a server or array. Remember, the Shingled Magnetic Recording (SMR) drives need software to work in an array.
WD and Seagate are interested in releasing 16TB and 20TB drives in 2018 and 2020 and already the latter has made this news official.
The difference between PMR and SMR is that the former makes data tracks rest side by side, while SMR overlaps the tracks on a platter like shingles on a roof, allowing more tracks to be squeezed together on a platter. As the tracks are overlapped, the read head on a HDD using SMR can be half the size of a typical one.
While SMR increase density, a need also arises to use software for additional data management, which slows the Read/write rates. That is because when applications attempt to overwrite data or write random data, tracks with existing data are already overlaid with other tracks. It means host applications data needs to be sequentialized to accommodate a write sequential transfer.
Essentially, an application needs to be taught to write sequentially and can mainly be used for read purposes. For this reason, both Seagate and WD brand their SMR drives as archival drives than primary data drives.
The cost of Western Digital Ultrastar He10 10TB hard drives will be revealed when you contact the online partners of WD’s sales channel and also authorized distributers. Amazon, Best buy, Walmart, Tigerdirect are some of the company’s selling WD drives online.