They come in different sizes. There are two main ones: 3.5" and 5.25", which are the sizes of the standard bays in a desktop computer case. At one time, 5.25" was the most common, though it's now relatively rare.
You can upgrade Alienware desktops because of its many expansion slots.
Sony makes a desktop computer named the L series. It has customizable specifications such as the hard drive, memory, the processor, and the operating system.
The number of hard drives that can go in a desktop is more limited by the space you have within your computer's case and the number of ports on your motherboard rather than operating system limitations. I have heard that you can have up to 24 drives in Windows including internal and external drives. Right now, I have 5 drives attached to my desktop. To determine how many drives you can have in your desktop you should count up the number of SATA or IDE ports on your motherboard and count up the spaces in your computer case. Also, consider using external hard drives to increase your storage capacity.
There are many hard drive manufacturers. Seagate is a best solution.
how many types hard disk drives
The two terms are completely different. Your "Tower" is what your actual system ( computer ) is typically reffered to. A Hard drive is a small piece of hardware about 1 inch tall, 4 inches wide, and 6 inches long that sits in your "tower" and stores all of your information. Consider this like a gigantic floppy disk that you can not remove. Altough these terms are completely different, many people refer to the "Tower" as the "Hard drive," as incorrect as it may be.
The Major components of the typical desktop computer are the following: CPU (central processing unit) RAM (Random Access Memory) Hard Drive CD/DVD/BluRay/CD-ROM drive (optional) Video Card
For hard drive space, it is not only possible, but is the norm for today's computers. Desktop computers do not have the physical space for the sticks of RAM that would be required for 100 GB's worth. Many servers do, however.
The following applies to Windows XP and below only. First, open My Computer. Then, right click the icon of the hard drive and choose 'Properties' from the menu that appears. On this screen there will be a pie chart which shows how much free space (pink) there is compred to how much space is used (blue). To get the exact figure, look above at the key which states how many bytes and gigabytes are free on your hard drive. For those running Windows Vista, it is even easier: open Computer from the desktop or start menu, and on the window that appears, under the drive named BOOT there should be text telling you how many gigabytes are free, and how many gigabytes your hard drive can hold in total.
No volts need a hard drive. However hard drives need a voltage. Usually about 5 for the data more for the physical movement of the drive.
It has a 1TB hard drive already, and there is space to add one other hard drive.
The PlayStation 3 is not designed to work without a hard drive. When the hard drive is worn out after many rewrites, the PlayStation 3 will no longer function and the hard drive should be replaced.