Hard drives last for many years
Western Digital makes some really good external hard drives. They are fairly inexpensive. Another great company is Toshiba. There hard drives last for a very long time.
There are two major types of solid-state hard drives - multi-level cell (MLC) and single-level cell (SLC) drives. MLC drives can generally last for five to six years before failure; on the other hand, SLC drives may potentially be able to last decades.
240 hard drives, 20 floppy drives and 40 CD-ROM drives.
Cheap external hard drives are designed to last around 3 years, but the life span varies greatly on how often it is used, and how well it is taken care of. If the hard drive is used infrequently and is powered down when not in use, it can easily last 5+ years. If the hard drive is used frequently, kept in less than ideal conditions (wet, cold, hot, etc.) then it might not even last a year.
Seagate has been in the bussiness for a long time and sell fast and reliable hard drives.
Not necessarily. As a matter of fact, nowadays you can get what are called Solid State Hard Drives, which are quite different from the old school IDE hard drives and the current standard SATA hard drives. I don't know much about Solid State Hard Disk Drives but it is my understanding that they tend to last a lot longer than both IDE and SATA. A 60 GB Solid State hard drive will cost about the same as a 500 GB SATA drive, apparently because they last longer and are better all around.
The top four brands of 1TB Hard Drives are amongst others Western Digital hard drives, Seagate hard drives, Toshiba hard drives, and Hitachi hard drives.
Hard disk drives
20 years
How are Hard drives indentified and what are their functions
One of the best external hard drives is made by Seagate. They have been a leader in the industry for a long time and are a very reliable brand.
Mac laptops may likely have solid state drives (not hard drives). Those drives are 2.5" form factor and can be replaced by hard drives.