This is a general listing of Personal Computer Hard Disk Drive [HDD]
manufacturers. While 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.
Internal Interface types; ATA [IDE], Ultra ATA, SATA [Desk-top], SCSI, Ultra SCSI, Serial SCSI [Enterprise]
External Interface types; SATA [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.
0.85 inch drives are 0.13" x 0.94" x 1.26" [example size]
1.8 inch drives are 0.315" x 2.12" x 3.09" [example size]
2.5 inch drives are 0.370" x 2.75" x 3.94" [example size]
3.5 inch drives are 1.000" x 4.00" x 5.74" [example size]
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
Adtron Corporation {SATA 2.5", SCSI 2.5"/3.5", Solid State IDE 2.5" UDMA-100, IDE 3.5" UDMA-66, RAID}
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}
HP{SATA, ATA/100, SAN}
Quantum {Disk-based backup systems-Networks}
Samsung {Hard Disk Drive SATA, SAS, Ultra ATA - 100}
Seagate Disc Storage {Serial Attached SCSI (SAS), Ultra320 SCSI and 2 Gbits/sec Fibre Channel interfaces, SATA, Ultra ATA/100}
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}
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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. |
Engineering Design Key words: SCSI, SAS, ATA, SATA, ATA Interface Bus, Ultra ATA, UATA, IDE, Advanced Technology Attachment, Integrated Drive Electronics, ATAPI, AT Attachment with Packet Interface Extension, Parallel bus, Personal Computer, PC, IBM Compatible, Hard Drive, Floppy Drive, Interface Standard Data Bus, Standard, Specification, Spec, Interface, IC, Physical Interface, Physical Layer, Harddrive, Disk Drive Interface, RAID Controller, Description, Pinout, Pin out, Signal Names, Direct Attached Storage [DAS], Networked Attached Storage [NAS], Storage Area Network [SAN]
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