Data broadcasting is an important data dissemination approach in mobile environment. It can efficiently support access to hot data with common interest.

在移动计算机环境中，数据广播是一种发布数据的重要途径，能有效支持对具有公共访问兴趣的热点数据的访问。

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The magnetic disk backs up all files residing in the NAND, protecting the user from inevitable NAND wear and preserving it for the more hot data handling.

ENGADGET: Western Digital builds 5mm-thick hybrid hard drive, Ultrabook makers sign on early

Data accessed most frequently (often referred to as 'hot' data) is managed using speedy NAND flash to ensure fast response times, while data accessed less often ('cold' data) resides on the robust magnetic disks.

ENGADGET: Western Digital builds 5mm-thick hybrid hard drive, Ultrabook makers sign on early

The racks would rarely be nearing physical capacity, but might actually be maxed out in logical capacity due to power or cooling constraints at the rack level (the mantra to avoid creating hot spots in data centers has actually made floor and rack use a lot less efficient).

FORBES: The Case for the Infinite Data Center