Difference between security dedicated hard disk and ordinary hard disk

Working time difference
The design of the ordinary PC hard disk is based on the working day; it means that the ordinary PC hard disk works 8 hours a day, and works 5 days a week (the hard disk work means that the hard disk is in the read/write state. It is necessary to pay special attention to the hard disk after powering up. Status: working status and waiting status, where the working status is the hard disk for reading and writing, and the waiting state is that the hard disk is not reading or writing but is in a standby state.

The SDVR dedicated hard drive is designed and developed according to the 7×24 enterprise environment requirements. 7×24 means working 24 hours a day, 7 days a week (that is, continuous work). Ordinary PC hard disks are not suitable for long-term continuous reading and writing. Ordinary PC hard disks can be read and written for a long time, which may cause abnormal sounds, read and write errors, work stoppages, etc., and cause data loss.

Digital DVRs require uninterrupted operation all the year round. Therefore, the hard disk that needs to store video data must first meet the long-term continuous operation. The SDVR dedicated hard disk can meet this requirement.

Power management
All 3.5-inch hard drives contain two motor systems (spindle motor and magnetic arm motor), so when the hard disk is powered up, it is similar to the case where the motor is powered on: it will have a large start at the initial time of power-on. Current to complete the hard drive boot. If the external power supply system of the hard disk does not guarantee sufficient current support when the power is turned on, the hard disk will fail to boot, resulting in the hard disk being unavailable. And if this happens multiple times, it is easy to cause damage to the hard disk.

Since the power supply of the hard disk motor is satisfied by the external power supply system DC 12V, the DC current of 12V is used as the standard when evaluating the starting current of the hard disk. The startup current of a normal PC hard disk is generally between 2.8A and 3.2A. The SDVR dedicated hard disk has a startup current of up to 2.0A.

Digital hard disk recorders often use multiple hard disks for data storage. For example, installing 8 hard disks is as follows: ordinary PC hard disk startup current is 2.8×8=22.4A, and the lowest power consumption is 22.4A×12V=268.8W. SDVR dedicated hard disk startup current 2.0A × 8 = 16A, the highest power consumption is 16A × 12V = 192W. It can be seen that the SDVR dedicated hard disk has lower requirements on the external power system in the case of the same number of hard disks (the number of SDVR dedicated hard disks that can be installed is more under the support of the external power supply of the same output power).

Operating power consumption and heat dissipation difference
The power consumption here refers to the power consumption of the hard disk during normal read and write states.
The operating power consumption of an ordinary PC hard disk is generally about 14.4 watts, and the operating power consumption of an SDVR dedicated hard disk is generally about 8 watts. It can be seen that the SDVR dedicated hard disk running power consumption is only 55% of the power consumption of the ordinary PC hard disk. The low operating power consumption is not only important for the power system, but also has important significance for the heat dissipation of the digital hard disk recorder system (operation power consumption). About 75% of it will be converted into heat).

In a digital hard disk recorder, if 8 hard disks are installed, the total power consumption of the ordinary PC hard disk is 14.5W×8=116W, and the total power consumption of the SDVR dedicated hard disk is 8W×8=64W. If you use a normal PC hard disk, you can imagine that there is such a high heat source in such a small space as the digital video recorder. The heat dissipation requirement for the system is very high. In order to ensure that the hard disk has a reasonable ambient temperature (0 to 60 ° C), The hard disk system must be effectively cooled. With the SDVR dedicated hard disk, the heating situation is much better----reducing the system cooling requirements to make the system more adaptable to the environment.

Transmission difference
In addition to the transmission mode of the traditional PC hard disk, the SDVR dedicated hard disk also introduces an updated transmission mode---uninterrupted transmission mode, which is up to 65MB/s. By introducing the uninterrupted transmission mode, the support of the hard disk to the streaming media is more reliable, and the smoothness and stability of the playback of the digital hard disk recorder while being recorded are fully guaranteed, which is a feature that is not possessed by other ordinary hard disks.

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