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Comparison Transcend StoreJet 25M3 TS4TSJ25M3S 4 TB vs A-Data HD720 AHD720-2TU3-CBK 2 TB

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Transcend StoreJet 25M3 TS4TSJ25M3S 4 TB
A-Data HD720 AHD720-2TU3-CBK 2 TB
Transcend StoreJet 25M3 TS4TSJ25M3S 4 TBA-Data HD720 AHD720-2TU3-CBK 2 TB
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Drop protection according to MIL-STD-810G 516.6. Support for AES encryption using bundled software.
Placementexternalexternal
TypeHDDHDD
FeaturespCpC
Size4000 GB2000 GB
Form factor2.5 "2.5 "
ConnectionUSB 3.2 gen1USB 3.2 gen1
Manufacturer's warranty3 years3 years
Technical specs
RPM5400 rpm5400 rpm
Features
Features
shockproof
data encryption
backup button
shockproof
 
 
General
Dustproof & waterproof
MIL-STD-810
Power source (external)USB portUSB port
Materialrubberizedrubberized
Size129x81x24 mm129x98x20 mm
Weight293 g223 g
Color
Added to E-Catalogjanuary 2021june 2016

Size

Rated capacity is one of the key parameters of a hard drive, which determines how much information can fit on it. For SSHD, this item indicates the capacity of only the hard drive, for RAID arrays, the total capacity of the array.

The volume of information in the modern world is constantly growing and require more and more capacious drives. So in most cases it makes sense to choose a larger disk. In fact, the question of choosing this parameter often rests only on the price: the cost of the drive directly depends on the volume.

If the question is in such a way that you need to choose a disk "smaller and cheaper, but that's enough" — it's worth evaluating the amount of information that you have to deal with and the specifics of use. For example, for an ordinary office PC, designed mainly for working with documents, an internal drive of 2 TB and even 1 TB will be more than enough, and an enthusiastic gamer will need 4 TB, 6 TB and even 8 TB will not be superfluous. If you use a disc for recording from camcorders, then you can get a 10 TB, 12 TB, 14 TB, 16 TB, 18 TB or more HDD.

Features

Wi-Fi module. The hard drive has its own Wi-Fi module. The Wi-Fi standard was originally created for building wireless computer networks, but can also be used for direct connection to various devices. Disks with this function can be used as network drives — data storages that can be accessed by every network user. They are also useful for smartphones and tablets: the built-in memory of such devices rarely exceeds a couple of tens of gigabytes, and external storage can come in handy. Many Wi-Fi drives are initially optimized for use with portable electronics (and some are even designed for specific popular models), but anyway, you should make sure that the drive and gadget are compatible in advance.

Shock-resistant body. A housing that protects the hardware of the hard drive from shock and shock. It is undesirable to specifically drop such media, but anyway, they endure falls better than unprotected counterparts. The specific degree of impact protection should be specified separately; the traditional indicator is resistance to falls from a height of 1 – 1.5 m.

— Data encryption. Ensures the security of storing information on the disk: access to encrypted information can only be obtained by someone who knows the password. The encryption module is an integral part of the drive and does not depend on the computer to which it is connected. The ability to encrypt data is critical if you pl...an to write confidential information to discs; this feature is especially useful for portable drives and laptop drives, which are more at risk of theft than fixed systems and their components.

— Built-in USB connector. USB plug provided in the design of the drive itself. Thus, no additional cables, adapters, etc. are required to connect such a disk to the computer's USB port.

— Backup button. A separate button for starting the file backup procedure, located on the case of an external hard drive. When pressed, the important information for the user contained on the disc is automatically copied to a predefined folder. It is worth considering that the backup settings must be manually configured beforehand.

— Energy saving mode. Drives with power save mode, other things being equal, consume less electricity than conventional drives — both during operation and in standby mode. They usually have a low rotational speed (see Spindle speed (rpm)). Reduced power consumption is especially important for laptop drives, as it allows longer battery life.

Dustproof & waterproof

The presence of a hard drive additional protection against dust and moisture.

This feature is typical for external models (see "Execution") — they are the most susceptible to negative factors. The degree of protection against dust and moisture can be different, it should be specified separately in each case. Nevertheless, additional security anyway has a positive effect on the reliability and durability of the media.
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