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Capacity: 4 TB
HardDiskSATA Western Digital Purple, capacity 4 TB, suitable for use in CCTV
Capacity: 8 TB - 18 TB
The most scalabledrivesin the datasphere, Exos X seriesharddrivesintegrate the latest technology in support of a secure and reliable cloud data center. Powerful performance and ...
Seagate
Capacity: 4, 2, 1 TB
... and tablets*, thisdriveallows you to seamlessly access data and share between devices. Enjoy the convenience and flexibility for your storage needs with the Canvio Flex – your smart storage companion. 2.5“ External ...
Toshiba Europe Storage Device Division
Capacity: 900, 600, 300 GB
The 12.0 Gbit/s SAS interface AL14SX Series Enterprise PerformanceHDDsare Toshiba’s highest-performing 15,000rpm model line. Engineered for mission critical IT operations, an array of models are available with 512 ...
Toshiba America Electronics Components
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 PortableHDD
Netac Technology Co.,Ltd.
Capacity: 1, 2 TB
Backup in style with this beautiful mobileharddrive. Compact, lightweight and housed in a stylish brushed aluminium enclosure, the Freecom mHDD lets you take your digital life with you. When you ...
Capacity: 1, 2, 4 TB
... computer files the easy way by pairing LaCie USB 3.0Drivewith Time Machine. It’ll run frequent, automatic backups whenever you’re plugged in. USB 3.0DriveIs Plug-and-Play LaCie USB 3.0Drive...
LACIE
Capacity: 1 GB - 16 GB
... ATA Secure Erase and S.M.A.R.T. Functions Global Wear-Leveling and Block Management Apacer’s SDM5A (SATADiskModule 5A) is our next generationdisk-on-module (DOM) series that offers elevated speed boost ...
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.
驱动能力已经显著增加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
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