 A 3.5" USB/FireWire hard disk enclosure A disk enclosure is essentially a specialized chassis designed to hold and power disk drives while providing a mechanism to allow them to communicate to one or more separate computers. Drive enclosures provide power to the drives therein and convert the data sent across their native data bus into a format usable by an external connection on the computers to which it is connected. In some cases, the conversion is as trivial as carrying a signal between different connector types. In others, it is so complicated as to require a separate embedded system to retransmit data over connector and signal of a different standard. Factory-assembled external hard disk drives, external DVD-ROM drives, and others are all built around disk enclosures. Bulkier models built around 2.5" & 3.5" hard drives and full-height 5.25" DVD-ROM drives use enclosures that are often nearly identical to OEM enclosures. Image File history File linksMetadata Download high-resolution version (2450x1850, 553 KB) Summary Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Disk enclosure User:Mrzaius/sandbox/disk enclosure Metadata This file contains additional information, probably added from...
Image File history File linksMetadata Download high-resolution version (2450x1850, 553 KB) Summary Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Disk enclosure User:Mrzaius/sandbox/disk enclosure Metadata This file contains additional information, probably added from...
Look up Chassis in Wiktionary, the free dictionary. ...
Disk Drive is the afternoon show on CBC Radio Two. ...
In computer architecture, a bus is a subsystem that transfers data or power between computer components inside a computer or between computers and typically is controlled by device driver software. ...
A router, an example of an embedded system. ...
A hard disk drive (HDD), commonly referred to as a hard drive or hard disk,[1] is a non-volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces. ...
Benefits
Key benefits to using external disk enclosures include: Image File history File links Size of this preview: 449 × 599 pixelsFull resolution (1454 × 1940 pixel, file size: 137 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Image File history File links Size of this preview: 449 × 599 pixelsFull resolution (1454 × 1940 pixel, file size: 137 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Melco Holdings Inc. ...
An external hard drive. ...
- Adding additional storage space and media types to small form factor and laptop computers, as well as sealed embedded systems, such as digital video recorders.
- Adding more drives to any given server or workstation than their chassis can hold.
- Transferring data between non-networked computers, jokingly known as sneakernet.
- Adding a backup source with a separate power supply from the connected computer.
- Sharing the data on a drive in a network-aware enclosure.
- Preventing the heat from a disk drive from increasing the heat inside an operating computer case.
- Simple and cheap approach to hot swapping.
- Recovering the data from a broken or damaged computer.
- Lower the cost of removable storage by reusing hardware designed for internal use.
- More memory than CDs, DVDs, and Flash Drives.
- Better protection of files from damage, age, weathering, and corruption, than CDs, DVDs, and Flash Drives.
The Shuttle XPC SN25P Small form factor (SFF) computers are housed in smaller cases than typical desktop computers. ...
For the band, see Laptop (band). ...
A router, an example of an embedded system. ...
Foxtel IQ, a digital video recorder and a satellite cable set-top box. ...
In information technology, a server is an application or device that performs services for connected clients as part of a client-server architecture. ...
In a non-network environment, the floppy disk was once the primary means of transferring data between computers. ...
This article or section is in need of attention from an expert on the subject. ...
For other uses, see Heat (disambiguation) In physics, heat, symbolized by Q, is energy transferred from one body or system to another due to a difference in temperature. ...
Hot swapping or hot plugging is the ability to remove and replace components of a machine, usually a computer, while it is operating. ...
Consumer enclosures In the consumer market, commonly used configurations of drive enclosures utilize magnetic hard drives or optical disk drives inside of USB, FireWire, or Serial ATA enclosures. External 3.5" floppy drive are also fairly common, following a trend to not integrate floppy drives into compact and laptop computers, started by Apple Computer with their iMac. Pre-built external drives are available through all major manufacturers of hard drives, as well as several third-parties. In physics, magnetism is a phenomenon by which materials exert an attractive or repulsive force on other materials. ...
Typical hard drives of the mid-1990s. ...
In computing, sound reproduction, and video, an optical disc is flat, circular, usually polycarbonate disc whereon data is stored. ...
Note: USB may also mean upper sideband in radio. ...
The 6-pin and 4-pin FireWire Connectors The alternative ethernet-style cabling used by 1394c FireWire is Apple Inc. ...
First generation (1. ...
A floppy disk is a data storage device that comprises a circular piece of thin, flexible (hence floppy) magnetic storage medium encased in a square or rectangular plastic wallet. ...
For the band, see Laptop (band). ...
Apple Inc. ...
The original Bondi Blue iMac G3 was introduced in 1998. ...
As a general rule of thumb, desktop models of optical drives such as DVD-ROM drives, CD-ROM drives, and CD or DVD burners require 5.25" wide enclosure, while 3.5" floppies and desktop hard drives require a 3.5" wide enclosure. Laptop hard drives are generally 2.5" drives, but older laptops and notebooks had hard drives that varied in height, which can make it difficult to find a well-fitting chassis. Laptop optical drives require "slim" 5.25" enclosures, since they have approximately half the thickness of their desktop counterparts, and most models use a special 50-pin connector that differs from the 40-pin connectors used on desktop ATA drives. DVD is an optical disc storage media format that is used for playback of movies with high video and sound quality and for storing data. ...
The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ...
A CD burner, CD recorder or CD writer is an internal or external writable Compact Disc drive that can be attached to a computer. ...
An Apple DVD-R Disc A spindle with 50 Verbatim DVD-R discs A single DVD-R Disc A DVD-Recordable or DVD-R (pronounced DVD Are or DVD Dash Are) is an optical disc with a larger storage capacity than a CD-R, typically 4. ...
ATA connector on the left, with two motherboard ATA connectors on the right. ...
While they are less common now than they once were, it is also possible to purchase a drive chassis and mount that will convert a 3.5" hard drive into a removable hard disk that can be plugged into and removed from a mounting bracket permanently installed in a desktop PC case. The mounting bracket carries the data bus and power connections over a proprietary connector, and converts back into the drive's native data bus format and power connections inside the drive's chassis.
Enterprise enclosures In enterprise storage the term disk enclosure may refer to: Enterprise storage is the field of information technology focused on the storage, protection, and retrieval of data in large-scale environments. ...
A storage array is a method for storing information on multiple devices such as hard drives. ...
Network-attached storage (NAS) is a file-level data storage connected to a computer network providing data access to heterogeneous network clients. ...
In computing, a storage area network (SAN) is an architecture to attach remote computer storage devices such as disk array controllers, tape libraries and CD arrays to servers in such a way that to the operating system the devices appear as locally attached devices. ...
In information technology, a server is an application or device that performs services for connected clients as part of a client-server architecture. ...
A backplane is a circuit board (usually a printed circuit board) that connects several connectors in parallel to each other, so that each pin of each connector is linked to the same relative pin of all the other connectors, forming a computer bus. ...
For other uses, see Temperature (disambiguation). ...
A sensor is a technological device or biological organ that detects, or senses, a signal or physical condition. ...
A power supply unit (sometimes abbreviated power supply or PSU) is a device that supplies electrical power to a device or group of devices. ...
Connections
Native drive protocols -
SCSI, SAS, Fibre Channel, and eSATA protocols can be used to directly connect the external hard drive to an internal host adapter, without the need for any intervening controller. These native external drive protocols are extremely similar to the internal protocols, but expanded to carry power. This is the case with eSATA and the SCSI Single Connector Attachment standard. A host adapter with external port may be necessary to connect a drive, if a computer lacks an available external port. Direct Attached Storage (DAS) refers to a digital storage system directly attached to a server or workstation, without a storage network in between. ...
This article or section does not cite any references or sources. ...
2. ...
This article does not cite any references or sources. ...
A SATA power connector. ...
Fibre Channel Host Bus Adapter (64-bit PCI-X card) SCSI Host Bus Adapter (16-bit ISA card) In computer hardware, a host controller, host adapter, or host bus adapter (HBA) connects a host system (the computer) to other network and storage devices. ...
For meanings in specific fields, see protocol (computing) or protocol (cryptography). ...
Single Connector Attachment, or SCA, is a type of connection for the internal cabling of SCSI systems. ...
Fibre Channel Host Bus Adapter (64-bit PCI-X card) SCSI Host Bus Adapter (16-bit ISA card) In computer hardware, a host controller, host adapter, or host bus adapter (HBA) connects a host system (the computer) to other network and storage devices. ...
Direct attach serial protocols USB or FireWire connections are typically used to attach consumer class external hard drives to a computer. Unlike SCSI, eSATA, or SAS these require circuitry to convert the hard disk's native signal to the appropriate protocol. Parallel ATA and internal Serial ATA hard disks are frequently connected to such chassis because nearly all computers on the market today have USB or FireWire ports, and these chassis are inexpensive and easy to find. Note: USB may also mean upper sideband in radio. ...
The 6-pin and 4-pin FireWire Connectors The alternative ethernet-style cabling used by 1394c FireWire is Apple Inc. ...
ATA connector on the left, with two motherboard ATA connectors on the right. ...
Network protocols -
iSCSI, NFS, or Windows File Sharing are all commonly used protocols that are used to allow an external hard drive to use a network to send data to a computer system. This type of external hard drive is also known as Network-attached storage or NAS. Often, such drives are embedded computers running operating systems such as Linux or VxWorks that use their NFS daemons and SAMBA to provide a networked file system. A newer technology, Network-Attached Storage (NAS), has been applied to some disk enclosures, which allows network ability, direct connection (e.g. USB) and even RAID features. Network-attached storage (NAS) is a file-level data storage connected to a computer network providing data access to heterogeneous network clients. ...
Internet SCSI (iSCSI) is a network protocol standard, officially ratified on 2003-02-11 by the Internet Engineering Task Force, that allows the use of the SCSI protocol over TCP/IP networks. ...
Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network as easily as if the network devices were attached to its local disks. ...
Server Message Block (SMB) is an application-level network protocol mainly applied to shared access to files, printers, serial ports, and miscellaneous communications between nodes on a network. ...
Network-attached storage (NAS) is a file-level data storage connected to a computer network providing data access to heterogeneous network clients. ...
An embedded system is a special-purpose computer system, which is completely encapsulated by the device it controls. ...
This article is about operating systems that use the Linux kernel. ...
This article needs additional references or sources for verification. ...
Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network as easily as if the network devices were attached to its local disks. ...
For other uses, see Samba (disambiguation). ...
Network-attached storage (NAS) is a file-level data storage connected to a computer network providing data access to heterogeneous network clients. ...
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