Zip drive, desk-top model
OEM Equipment

Hard Drive Manufacturers

Computer Hard Disk Drive Types

This is a general listing of Personal Computer Hard Disk Drive [HDD] manufacturers.
Solid State Disk Drives which are completely Flash are listed on the SSD page.
Hybrid Hard Disk Drives which rely on a large amount of Flash are listed on the HHD page.
The different types of disk drive bus interface types are listed below. Keep in mind that the IDE drives, Parallel ATA [PATA], Bus is being replaced by the Serial ATA: [SATA] bus.
Electrical Interfaces:
Internal Interface types; ATA [IDE], Ultra ATA, SATA [Desk-top], SATA, SCSI, Ultra SCSI, Serial SCSI [Enterprise]
External Interface types; eSATA [Desktop], SCSI, Serial SCSI [SAS] [Enterprise], Fibre Channel [Enterprise], Firewire, or USB

The four common Hard Disk Drive applications are Desk Top Computers, enterprise servers, workstations, and notebook computers.
Laptop Computers are normally the slowest and smallest
Desk Top Computers are middle of the range speed drives
Workstations use high-end disk drives
Enterprise servers use the fastest and most expensive hard drives

The four common physical drive sizes are 0.85 inch, 1.8 inch, 2.5 inch, and 3.5 inch [example size].
0.85 inch drives are 0.13" x 0.94" x 1.26"
1.8 inch drives are 0.315" x 2.12" x 3.09"
2.5 inch drives are 0.370" x 2.75" x 3.94"
3.5 inch drives are 1.000" x 4.00" x 5.74"

The three common disk rotation speeds are 5400 rpm, 7200 rpm, and 10000 rpms
5400 rpm Hard Disk Drives found in note book computers
7200 rpm Hard Drives found in desk top computers
10000 rpm Drives found in work stations, enterprise systems

Computer Hard Disk Drive Manufactures

Fujitsu {Mobile IDE, SATA - Enterprise SAS}

Hitachi {Server Drives ~ Ultra320 SCSI, SATA II, ATA-5, 3.5", 2.5", 1.8 inch hard disk drive}


Quantum {Disk-based backup systems-Networks}

Samsung {Hard Disk Drive SATA, SAS, Ultra ATA - 100, 3.5" desktop, 2.5" Laptop, 3.5" SATA enterprise, 1.8" SATA, SSD}

Seagate Disc Storage {Serial Attached SCSI (SAS), Ultra320 SCSI and 2 Gbits/sec Fibre Channel interfaces, SATA, Ultra ATA/100. USB3.0 External Drive}

Toshiba Hard Drives {0.85", 1.8" 100MBps Ultra DMA, 2.5 inch ATA-2/3/4/5/6 interface}

Western Digital Corp. {SATA 150MBps, SATA 300MBps, EIDE Drive, Enterprise, Desktop, Mobile, External Hard Disk Drives}

Personal Computer Hard Drives use a number of different types of electrical interface buses to interconnect the physical harddrive to the PC's mother board.
The most common interface is the IDE (Integrated Drive Electronics) bus; how ever the specification is more correctly known as the ATA (Advanced Technology Attachment) interface. A description of the IDE/ATA bus may be found on the IDE Bus page.
The second most common electrical interface is the SCSI bus.
A description of the SCSI [Small Computer Systems Interface] bus may be found on the Bus Design; SCSI Bus page.
Both bus types listed above are parallel buses, serial versions are also available.

Refer to the Personal Computer Buses page for links to all the different possible electrical interfaces.

Mini-IDE [MIDE] is a small form factor Solid State Drive.

Larry's Web Page

Electronic Parts and Equipment Distributors Electronic Component Manufacturers OEM Electronic Equipment Manufacturers EDA Software Producers CAD/CAE Software Engineering Standards, EE Publications Interface/Embedded Computer Bus Electronic Engineering Design Data Engineering Reference Information.
DistributorsComponents Equipment Software Standards Buses Design Reference

Modified 6/13/15
Copyright © 1998 - 2016 All rights reserved Larry Davis