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WD With Progressive Capacity HDDs For Cold Storage

6.1TB, 6.2TB, or 6.3TB

WD, a Western Digital company, announced its WD Ae line of HDDs designed for the unique operating characteristics of the emerging archive tier within web-scale datacenters.

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Built on a platform to achieve optimal TCO, Ae HDDs utilize the lowest possible power consumption and a Progressive Capacity model to enable a new tier of storage for large-scale cloud infrastructures.

Modern datacenter customers came to us with a need for an HDD solution designed specifically for ever-expanding cold-data repositories,” said Matt Rutledge, SVP and GM, storage technology, WD. “Now in our third generation with over 700PB deployed, WD is bringing the WD Ae drive to the broader market, representing another vital component of WD’s capacity storage portfolio, which delivers features and product attributes optimized for the rapidly evolving storage market.

The expanding scale of data creation and the corresponding need to retain, preserve and extract value from that data creates a new and unique challenge for large-scale datacenter entities. Reliable, long-term data management for massive-scale storage is becoming more critical. The conventional tools and technologies for cost-effective storage are not effective in massive-scale datacenters, so new approaches to storage architectures and associated component technology are emerging.

Cloud service providers have rapidly growing volumes of generally inactive data to store and manage, while at the same providing customers with access to the data at almost any time,” according to John Rydning, IDC’s VP for HDD drive research. “WD’s new WD Ae line of HDDs is aimed directly at these storage use cases, and is helping to define a new, active archive enterprise storage sub-segment, thus opening new HDD storage opportunities for the HDD industry.”

Focusing on the unique attributes of cold data, WD has led the cold/archive market with multiple generations of archive storage, evolving a product formula to deliver the combination of cost-effectiveness, power efficiency, storage density and application intensity. Ae drives are purpose-built archive HDDs with high areal density on a high volume mechanical platform that offers increased power efficiency and a Progressive Capacity model.

Part of the attributes of the WD Ae HDD family includes:

  • a dense five-platter platform, which renders an optimal mix of power, performance, capacity and cost;
  • capacities greater than 6TB;
  • 6Gb SATA interface; and
  • a workload and reliability rating of 60TB/yr workload and 500,000-hour MTBF.

WD Ae Progressive Capacity
As technology and manufacturing processes mature over time, incremental capacity increases are realized. WD’s Progressive Capacity model allows distribution of these incrementally higher capacity models to take advantage of their fullest available capacity: 6.1TB, 6.2TB, or 6.3TB, for instance. These more granular capacity increments result in greater capacity attainment through the life of a product platform. At the massive scale of modern applications, the availability of incremental capacity each quarter renders value to datacenters who can realize improvements in capacity-per-drive, capacity-per-volumetric space and reduced infrastructure overhead.

Hot vs. Cold storage – the Storage Temperature Continuum
While approximately 20-30% of data on most networks is active, commonly referred to as hot, the majority of data, 70-80% is inactive or cold, meaning it is unchanging and infrequently accessed.

Given the challenges of storing petabyte- or exabyte-scale data, public cloud and private cloud ecosystems are focused on creating new tiers of storage to deal with the varying degrees of ‘data temperature.’ The cold data tier is emerging in a manner very similar to the way the tier 0 emerged over the past decade to deal with critical performance requirements. Now the industry is adding a new tier on the opposite end of the data temperature spectrum, often referred to as tier 3 storage.

Cold storage is the practice of creating a new tier of important information not frequently accessed for long periods of time, and can include structured, unstructured, or semi-structured data that has timeless value, and of which the exact schedule of retrieval is uncertain. As a result, data retrieval times can be relaxed, compared to the speed at which hot data needs be retrieved.

With purpose-built and cost-optimized cold storage infrastructure and devices, IT departments can deliver improved time-to-archive and time-to-retrieve cold/archive data that outstrips capabilities of monolithic tape libraries, while utilizing standard HDD-based storage solutions that are used and understood to realize application value and storage cost savings.

Ae HDDs will be sold in box quantities of 20 and available to select distributors and integrators starting late 2014.

They are covered by a three-year limited warranty.

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