Usually one in a typical home PC. Power users may have more. Servers can have arrays of hundreds of disks
Most laptops support only one internal hard drive. Some support a second hard drive in a removable bay.
It depends on the kind of computer.
One or two is most common.
You have no hard drives listed. You have the ability to assign any drive letter (except the Main 'C' ) to your hard drives using "Computer Management"
Bestbuy.com has many great deals on many of the leading hard drives on the market today. Additionally, I'd suggest looking at solid slate drives (SSD) over the traditional hard drives.
240 hard drives, 20 floppy drives and 40 CD-ROM drives.
External hard drives are used for storing documents, pictures, videos and any other computer files. The external hard drive can be plugged into any computer so it makes the files more portable. Many people use external hard drives as a way of backing up files.
There are many different computer magazines that rate the top external hard drives. Magazines such as CIO insight and Computer Edge. Both are extremely credible.
It all depends on how many your computer will hold.
External hard drives are used for storing documents, pictures, videos and any other computer files. The external hard drive can be plugged into any computer so it makes the files more portable. Many people use external hard drives as a way of backing up files.
In the computer's HARD
The most common problem with large hard drives is computer crashes.
Assuming that when you say system unit of a computer you mean the computer case A.K.A. the tower, then no, hard drives are not always installed internally. Hard drives can be in external enclosures, hard drive docks, and even network attached devices.
The best place to visit about purchasing computer hard drives is an online website. A person can go on Amazon, Ebay, Newegg, or Bestbuy website to find the best place to visit about purchasing computer hard drives.
hard drives