Samsung HM160JC, HD401LJ, HD400LJ, MP0402H, HD403LJ, HD501LJ, HD402LJ, HD500LJ, HM100JI Hybrid HDD, Dram

..	igher..
..Reliabilit	..
..Faster	oot and Resume..
..Better shock	esistance..
..	nstant access..
..Re	uce Power Consumption..

Hybrid HDD

Samsung Hard Disk Drive 2007 Product Guide

Overview

Along with the development of mobile applications, mobile storage media is fast emerging as a hot issue. The growing trend toward mobility can easily be witnessed at some companies where employees are provided with notebook computers so that they can move to conference rooms at their convenience. This is just one example, but it is clear that today there is a demand for improved mobility. At the center of this issue is the hard disk. Mobile applications require several features from hard disks, including low energy consumption and the ability to absorb external shock. These requirements are especially important in the case of notebook computers. Other features required by users of personal computers include fast boot times and data stability. Hybrid hard disk drive (HHDD) refers to a leading product that incorporates the advantages of flash into the hard disk drive, satisfying the requirements like energy consumption and reduced boot time. HHDD adds NV Cache ( Non-Volatile Cache ) to the conventional hard disk drive; significantly improving the read and write caching functions for the enhancement of data input/output as well as the computer's overall capacity. Indeed, this is the first type to combine a magnetic storage device with digital semiconductor. Unlike the hard disk drive, which requires a certain rotational speed (5400 RPM) in order to boot, HHDD stores the boot-related data in a built-in flash cache memory. This enables an ultra fast boot time of less than five seconds: a remarkable achievement compared to the current standard of between 20 and 30 seconds. Additionally, battery life is expected to increase by approximately 20-50 minutes.

New Era of Storage

Up to 90% Power Saving when powered down

Read and Write instantly while spindle stopped

R/W DRAM

Cache

spindle	SOIC/	ATA Interface
drive	CPU

OneNAND

seek Cache

Hybrid Disk Drive Benefits

The benefits of the Hybrid HDD

1. Reduced boot time and improved system capacity

HHDD has flash memory playing a supplementary role to DRAM in order to dramatically reduce the boot time and improve system capacity. As the read-function of flash memory is much faster than that of a hard disk drive, it is possible to have the boot image file for a personal computer or other user files stored using the flash beforehand and read in order to achieve a faster system speed. This is particularly valuable for an OS that employs a 3D interface, such as Windows Vista.

2. Reduced power consumption.

HHDD uses less electricity. Through the OS paging-out process (virtual memory manager stores unnecessary data onto the hard disk drive), personal computers regularly write data onto the hard disk drive. In other words, every time data is stored the hard disk drive, the hard drive needs to spin- up, consuming electricity: the more frequent the writing, the more electricity is consumed. HHDD, however, enables write-caching of regular data using flash memory in order to minimize the need for the hard disk drive to spin-up, thereby reducing the system's overall power consumption.

3. Improved durability and reliability

HHDD offers improved durability and reliability. Insofar as the need for the HDD to spin-up is minimized, this also serves to shorten the duty cycle of the HDD, lowering the probability of head- media collisions and errors (off-track write, etc). This can lead to increasing the MTBF.