Western Digital Launches Ultrastar DC HC530 - TDMR 14TB HDD

Subject: Storage | April 18, 2018 - 05:39 PM |
Tagged: wdc, WD, ultrastar, sata, SAS, HelioSeal, hdd, DC HC530, 14tb

Following up on the prior release of a 14TB SMR (shingled magnetic recording) HDD, WD has launched a PMR (parallel magnetic recording)version of the same - the Ultrastar DC HC530:

UltrastarDC-HC530.jpg

While the new model does not yet incorporate MAMR, it does couple PMR with TDMR (two-dimensional magnetic recording), which gives a slight boost to platter density, reaching over 900 Gbit/sq. inch. The DC HC530 naming is a departure from the previous HGST Ultrastar line products, which were labeled as 'He8', 'He10', etc. High-level specs are as follows:

  • Rotational speed: 7200 RPM
  • Data buffer: 512MB
  • Seek time (typ): 7.5 ms
  • Sequential transfer rate: 267 MB/s (start of disk)
  • Available sector sizes: 512e (advanced format emulation), 4Kn (4KB sectors)
  • Warranty: 5 years

The SAS models offer double the interface throughput (12Gbps) and some additional custom sector sizes but require higher operating power to drive that faster interface. While track linear density is high enough (at least at the start of the disk) to saturate a SATA 3Gbit link, SATA 6Gbit and SAS 12Gbit links will still see a cache-hit benefit from the drives' relatively large 512MB data buffer.

WD's press release appears after the break, and more information is available on the Ultrastar DC HC530 product page.