External Hard Drives - What do you consider before buying

There are many factors before deciding what to buy an external drive, keep these factors ...

Capacity

Absolutely the most important is the whole external hard drive size you choose depends on how much data you intend to keep, for example, if you keep all your receipts, so you probably do not have a major hard disk, USB flash drive is small enough, and if it is also a lot of graphics, photos, videos , making music, etc. would be better for the outdoor unit and select a range of up to 500 GB and 2 TB.

Safety

The simplest economic security and can be carried out computers, so if you are not careful to protect your files, so no need to go to anything spectacular, but there are a few options when it comes to the safety of an external hard drive is:

1) Software: There are several third-party software, passwords and data encryption protects the hard drive as well - three StorageCrypt, many external hard drives in their own built-in encryption and password protection

2) Access to fingerprint: Some manufacturers have external hard drives have integrated access to fingerprints, is an example of this position Aegis Bio developed a biometric fingerprint sensor.

Data transfer rate

Speed is important for some users, for example, if the video capture could be a faster data transfer rate through large files, do not need someone who is a transfer and material for two reasons. Factors affecting the amount should be considered:

1) data transfer speed is a manufacturer of disk revolutions per minute (RPM) and the measured value of the unit faster. 5400, 7200 or 10000 rpm speeds are often available.

2) interface combines the hard drive and the computer. Some of the common interfaces and the corresponding transfer rates are as follows:

USB 1.1 1.5 MB/s (Megabytes per second)

USB 2.0 60 MB/s

USB 3.0 625 MB/s

FireWire (IEEE 1394) 100 12.288 MB/s

FireWire (IEEE 1394) 200 24.576 MB/s

FireWire (IEEE 1394) 400 49.152 MB/s

FireWire (IEEE 1394b) 800 98.304 MB/s

FireWire (IEEE 1394b) 1600 196.6 MB/s

eSATA 3 GB/s

eSATA II 6 GB/s

The size and duration

Some people prefer small, portable devices, and must not be less than the USB stick. USB flash drive, small and handy, but they are small, said that they get up to 256 GB USB, for example, Kingston Data Traveler 310th We are the largest and most elegant models of portable and very useful for those who want to copy files from one computer to another, are very strong and sustainable models for severe cases, shock-resistant rubber sheet to protect the device accidentally drops. Also bulky and heavy equipment, lots of terabytes of data that are useful to users, the storage medium that stores the information and I am not going to do about the device can be maintained.

External hard drives are very useful devices for the protection and safeguarding of information are many styles available, and spend time on something that suits your needs to choose .