external hard drive

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box.
Introduced by IBM in 1956, HDDs were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like cell phones and tablets, rely on flash memory storage devices. More than 224 companies have produced HDDs historically, though after extensive industry consolidation most units are manufactured by Seagate, Toshiba, and Western Digital. HDDs dominate the volume of storage produced (exabytes per year) for servers. Though production is growing slowly (by exabytes shipped), sales revenues and unit shipments are declining because solid-state drives (SSDs) have higher data-transfer rates, higher areal storage density, somewhat better reliability, and much lower latency and access times.The revenues for SSDs, most of which use NAND flash memory, slightly exceeded those for HDDs in 2018. Flash storage products had more than twice the revenue of hard disk drives as of 2017. Though SSDs have four to nine times higher cost per bit, they are replacing HDDs in applications where speed, power consumption, small size, high capacity and durability are important. As of 2019, the cost per bit of SSDs is falling, and the price ρrémíùm over HDDs has narrowed.The primary characteristics of an HDD are its capacity and performance. Capacity is specified in unit prefixes corresponding to powers of 1000: a 1-terabyte (TB) drive has a capacity of 1,000 gigabytes (GB; where 1 gigabyte = 1 billion (109) bytes). Typically, some of an HDD's capacity is unavailable to the user because it is used by the file system and the computer operating system, and possibly inbuilt redundancy for error correction and recovery. There can be confusion regarding storage capacity, since capacities are stated in decimal gigabytes (powers of 1000) by HDD manufacturers, whereas the most commonly used operating systems report capacities in powers of 1024, which results in a smaller number than advertised. Performance is specified as the time required to move the heads to a track or cylinder (average access time), the time it takes for the desired sector to move under the head (average latency, which is a function of the physical rotational speed in revolutions per minute), and finally the speed at which the data is transmitted (data rate).
The two most common form factors for modern HDDs are 3.5-inch, for desktop computers, and 2.5-inch, primarily for laptops. HDDs are connected to systems by standard interface cables such as PATA (Parallel ATA), SATA (Serial ATA), USB or SAS (Serial Attached SCSI) cables.

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  1. J

    Help External Hard Drive Issue

    How to fix this issue po, like nade detect naman na naka insert yung hard drive but the problem is hindi po sya nagpapkita sa folder , pa help naman po
  2. H

    Help How to format external hard drive to fat 32

    Pano po iformat si external hdd to fat 32? Dalawa lang po kasi nakalagay sa selection. Exfat and NTFS lang. Sana po may maka tulong. Salamat po
  3. K

    Pa Suggest po external hard drive

    Pa suggets naman po external hard drive ano pong maganda kaht sa lazada o sa shoppee Budgets po 2k
  4. P

    Help Toshiba External Hard Drive

    Good evening! Hello mga tropang PHC. Ask ko lang kung may possible way pa ba para makuha yung mga files na nasa external hard drive ko? Kapag pina-plug ko kasi siya sa natunog yung plug sound. Pero hindi siya maread ng PC. Nalaglag kasi to nung isang araw lang. Hindi ko naman akalain na yung...
  5. J

    Help WD Elements (External Hard Drive)

    Patulong po sa hard drive ko, di ko po kasi maopen yung mga files ko, may mga shortcut po yung mga folders like "Files and Drive" po, naka show hidden files na po and na-try ko na rin po yung attrib sa cmd kaso access denied po sya pag ganun
  6. H

    Help 0bytes external Drive

    Hi po, Yung external drive ko po kasi 0bytes pag sinaksak sa pc. May pag asa pa ho bang maayos to? 😏
  7. M

    Help Need help/info about External Hard drive

    Good day po mga ka PHC! Almost 4 years ko na pong gamit itong external hard drive ko mauga na po yung usb port na pakiramdam ko po malapit na masira sabi ng friend ko pwede daw po yun papalitan ng casing nag aalala lang po ako at baka corrupt lahat ng laman na files May chance po ba na ma...
  8. D

    Help External hard drive

    Hi mga paps. Meron po akong External hard drive. Nag copy po ako ng movies sa isang internet shop tapos pagsaksak ko sa laptop ko, gumagana naman po pero nung kinopya kona yung files biglang na disconnect yung driver ko. Paulit ulit ko syang sinaksak ulit sa laptop pero di sya dini detect ng...
  9. J

    Help External hard drive uli

    yung isa ko pong external nakakacopy naman sa PC ko pero kapag nagcocopy ako mula sa external papunta sa PC hindi completong nacocopy.. example yung size ng kinopy ko mula sa external is 1gb, yung lalabas lang sa computer is 66mb, parating ganun kahit ano icopy ko... pero yungnakalagay sa...
  10. J

    Help External hard drive

    patulong po mga boss sa external hard drive ko, hindi ko sya ma open... yan lang po lumalabas sa kanya( yung disk 1) pano po maayus yan?
  11. P

    Tools External hard drive

    Ano po magandang external hard drive for xiaomi redmi note x4? Salamat po sa sasagot
  12. C

    Help External hard disk problem. :(

    Hi guys, baka may makatulong po. May problem kasi ung external Hard Disk pag sinaksak ko siya. lumalabas ung format disk.. anyone, can solve this problem. Thank you in advance.. :))
  13. S

    Sino magaling sa mga external (wd passport)

    Ask ko lang po if theres a way para makuha pa yung mga important files kasi if iopen ko ang nakasulat ay Location not available J:\ is not accessible. Data error (cyclic resundancy check). Help po mga kaphc
  14. B

    Closed External hard drive raw cannot reformat?

    mga boss patulong nman pano ireformat yung external hard drive nka raw d kc ma reformat sa windows khit anong gwin..tnx
  15. H

    Closed Help for unrecognized external hard drive

    MGA PAPS PATULONG NMAN MERON AKO EXTERNAL HARD DRIVE MINSAN BINABASA SYA MINSAN NMAN HINDI... KAPAG BINASA NMAN SYA YUNG MGA FILE NYA DI KO NMAN MAKUHA... BKIT KAYA?? THANKS SA TUTULONG...
  16. P

    Closed Help!!! my seagate 1tb external hardrive back up slim

    Ayaw pong mabasa ng laptop ko at hindi na umiilaw yung light indicator nya? panu po ayusin to? nandito kasi mga important files ko.. thankyou sa makasagot
  17. J

    Closed Mga ka phcorner pa help po thanks.

    Guys meron po ba kau software na fast recovery for external hardrive for wd elements ..na dedetect nya po ung hardrive ko pero di mabuksan ..baka po may bad sector salamat po sa makakatulong saken ..
  18. 0

    Closed External HDD

    Pano po ba ayosin yung hard drive na ayaw magdisplay ang mass storage pero nadedetect naman yung drive. Thanks po sa makakasagot :)
  19. J

    Closed help po re: external Hard Drive detect as cd rom

    help po.. ung external hd ko po.. di ko na po kasi siya ma open... nadedetect siya as cd drive.. marerecover pa po kaya files nya? salamat po..
  20. W

    What has back up plus has install for you

    *3.0 *No reformatting needed whether you are using a mac or a windows operating system *has different color *comes up in different memory sizes
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