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Capacity: 2, 1 TB
... Plus Slim, an external hard drive for Windows, Mac, and Chromebook. This portable external hard drive features a minimalist brushed metal enclosure, making it a ...
Seagate
Capacity: 256, 320, 500, 1,000 GB
... The DIRECS removable hard disk is a mobile removable hard drive designed for local recording of image and sound data from the DIRECS recorder family. It supports linear recording and ...
Capacity: 4 TB
... Hard Disk SATA Western Digital Purple, capacity 4 TB, suitable for use in CCTV ...
Capacity: 1, 2, 3, 4 TB
... Connect the devlce through the data cable, plug and play, no need to set up Connecting to the MAC without formatting the Portable HDD ...
Netac Technology Co.,Ltd.
Capacity: 8, 12, 16 GB
... Enterprise-grade SAS HDDs for Synology systems Engineered for top performance and reliability in Synology systems Unmatched integration with DSM and Synology hardware enable HAS5300 SAS hard drives ...
Synology America
Capacity: 1, 2 TB
... Backup in style with this beautiful mobile hard drive. Compact, lightweight and housed in a stylish brushed aluminium enclosure, the Freecom mHDD lets you take your digital life with you. When you are on the move, ...
Capacity: 1, 2, 4, 5 TB
... to 500k high-resolution photos1Store up to 165 hours of videos2 An Ultra Compatible, Ultra Portable Hard Drive. Use LaCie Mobile Drive with both Mac and Windows out of the box. No need to reformat. Reversible ...
LACIE
... recommendations to our customers including selection of ideal thermoplastic for hard disk drive components such as air diverters and DSP. Product packaging Our double ...
A hard disk drive stores data permanently, contrary to random access memory (RAM). It is connected to the motherboard via an IDE, SCSI or SATA interface, or via a USB port, a firewire or an Ethernet port, in the case of an external hard drive.
ApplicationsHard disk drives are used as mass storage devices in computers or in networks.
TechnologiesThese drives are composed of stacked platters kept in rotation by a motor. A series of intermediary magnetic heads read and write data on the platters' surface.
Drive capacity has increased significantly faster than speed, which is limited by mechanics. One terabyte is a common standard. Hard drives feature cache memory to compensate for data access delays.
In low-capacity applications, hard drives are more and more often replaced by electronic memories, such as SD cards or SSD disks. They are composed of flash memory, feature no mechanical parts and withstand vibrations better, but are more costly.
The drive's capacity and data access speed are the main choice criteria. Furthermore, determine the required interface type, whether the disk should be external or not and the form factor. The harshness of the working environment also should be considered.
- Mass data storage
- Data access delays
the best suppliers