It is right for internal and external hard drives but is especially vital for external hard drives to prevent loss of unauthorized data access.
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What are the features of eSATA?
External hard drives can differentiate according to different criteria. The most important distinguishing features are:
- used technique: SSD or HDD,
- 2.5- or 3.5-inch hard drives,
- applied interface technology (USB, Firewire, eSATA, Thunderbolt, etc.),
- external power supply necessary,
- Storage capacity.
What are the sizes of [eSATA]?
Depending on the diameter of the rotating magnetic disks used, whether 2.5 or 3.5 inches, the external hard drives have a specific size.
- 3.5-inch hard drives are larger and heavier, but have higher read and write speeds. Also, larger hard drives with higher storage capacity are available.
- 2.5-inch hard drives can often supply via the data interface with the required electrical energy for operation.
- 3.5-inch hard drives usually require an additional external power supply.
- Some external hard drives provide particularly resistant housings that protect against moisture, magnetic fields, or external forces.
- Less standard is the 1.8-inch format, which is still partly used today for external SSDs that work with electronic memory devices instead of rotating magnetic disks. USB sticks have replaced the 1.0-inch form.
- There are also external hard drive enclosures with two or four hard drives. These can work for a higher data transfer rate in the RAID-0 network or greater data security in the RAID-1 system.
What are the connection types of eSATA?
- Very often, USB interfaces used to connect external hard drives. Depending on the USB version (2.0, 3.0, 3.1, or 3.2), achieve specific data transfer rates.
- With USB 3.0, the achievable data rate is in the range of approximately 450 megabytes per second. Other standard interfaces are Firewire and Thunderbolt.
- All three interfaces offer the possibility of supplying connected devices with electrical energy at the same time.
- Another interface for external hard drives is eSATA. With eSATA, an external hard drive works just as fast as an internal SATA- connected hard drive.
- In principle, there are also external hard disk solutions that connect to a computer via LAN or WLAN.
What are the power supplies for [eSATA]?
- 3.5 inch IDE / PATA hard drives usually require 5 and 12 V operating voltage. Initially, the external power supplies used for the amount made these two voltages available.
- To connect to the hard drive, however, each manufacturer put on their plugs. Usually, they use mini-DIN connections with four, five, or six pins.
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