The difference for ordinary Hard disk and monitor Hard disk
Source: www.mvteamcctv.com
Date: 2015/01/05
With the continued growth of the security surveillance industry,especially for the DVR.the importance of monitoring the hard drive has become increasingly prominent. So what is the difference between ordinary hard drives and monitors one? Why must choose a professional monitor hard disk? From the practical applications, the difference between the hard disk and the general monitoring mainly in power, cooling environments, data reading and writing and working time.
1-Working time:
The design for ordinary hard disk on working time is 5 * 8 hours of continuous working time, which means five working days, the hard disk work eight hours every weekday, From this data, the ordinary hard disk is not suitable for long sequential read and write, if long uninterrupted read it, is bound to be overwhelmed problems; and monitor class hard drives can achieve 7 * 24 continuous year-round work, MTBF 1,000,000 hours, so in terms of stability and reliability, monitor hard undoubtedly superior.
2-Power:
The management on Ordinary hard disk is poor,while it is more strict on monitor hard disk.
Monitoring often need to install multiple hard drives, if without good power management, power and security will be compromised. Ordinary hard disk inrush current will reach 2.5A or higher. The current monitor will be hard to start when it strictly control to 2A, you can use the low power supply to avoid excessive current moment is burned. In addition, the monitor hard drive as well as have the power optimization function, when the hard disk is idle own transition to a low-power mode to save power.
3-Radiating environment:
Ordinary hard drive cooling environment is poor, good hard drive cooling environment monitoring
Monitoring the number of hard drives to different needs, but often have few or even many hard drives, in this context, there are higher demands on the thermal environment. Ordinary hard drive power consumption is about 14.5W, if it is a hard drive installed in a host basically no problem, but this needs to monitor multiple hard drives in extreme environments, the cooling problems caused by this power can not be ignored. Monitoring drive power consumption is very low, 2TB operating power <5W, naturally low heat dissipation, install multiple hard drives will not have too much power, to ensure a relatively good thermal environment.
4-data reading and writing
The most important feature is the requirement to monitor the hard drive for a long time continued to write, but not too high demands for data read. This is common on the hard disk from the design can not meet the requirements. Regular hard drive in the home environment, tend to be random small file read write speed pursuit, while the hard drive is suitable for continuous monitoring sustained write large files, with good stability.
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