It is not known, but it is probable that they would think they use both.
HDD stands for Hard Disk Drive. SDD stands for Solid State Drive.
With capacities beginning to exceed 12TB, SSD provides the largest capacity by far. HDD (hard-disk drives) are not all that far behind but the high cost of high-capacity SSD puts them out of reach of most users. Both SSD and HDD can be configured as RAID allowing even greater capacities, but in terms of cost per megabyte, hard-drives still offer the greatest capacity (SSD is typically 10 times more expensive). However, that will change as the cost of SSD continues to fall. Flash drives use similar technology to SSD but on a much smaller scale, comparable to quad-layer BluRay discs which are capable of storing up to 150GB. But, as with SSD, we can fully expect flash drives to offer much greater storage capacity in the future, albeit to a lesser degree than SSD.
Solid-State Drives (SSD's)?
If you mean between hard drives and ssd's (solid state drives), then you need to read the wikipedia page on Solid State Drives, it has a comparison of the two technologies.
Small, No moving parts, No noise
RAM is Random Access Memory. It holds open programs and files. The more programs and files that you have open, the slower your computer gets. When you save a file, the program stays open on RAM, but the file gets saved to the Hard Drive. ROM is Read Only Memory. It is memory that is hard to change, modify, and update. SSD - Solid State Drive. Solid State drives stores/transfers files at a faster rate than Hard Disk Drives. They are also less volatile than HDD's. HDD - Hard Disk Drive. A Hard Disk Drive stores your files on a hard disk. It is slower than an SSD and is more volatile than SSD too and should avoid magnets. Hope this helps
USB flash drives, SSD drives, computer RAM,hybrid drives (small SSD + hard drive) and graphics cards. Sources: 5 years of working in a PC store.
ide hard drives are the old, slower, less capacity drives. sata are the modern, faster, large capacity drives. and ssd are the new, MUCH faster, medium capacity drives. ssd stands for Solid State Drive. it has no moving pieces inside. its basically a flash drive but in hard drive form. ssd's are also very durable u can drop them and they wont be damaged. ide drives have moving parts in them therefor the read/write head can scratch the disk easily if it is dropped and if shaked very hard it cna be damaged also. ssd's are VERY expensive though.
HDD is an abbreviation for Hard Disk Drive.
USB hard disk fast or not, depends on what it is connected to the port, and what is loaded inside. If the USB 3.0 or above, also with SSD, the speed of whoosh, like flying. But if the old HDD, or interface speed is slow, the speed is almost meaningless.
Absolutely! It has changed in size, speed, and access method. In a true sense of the word, HDD's don't even have to be physical any more. (Hense - - Direct Memory Drives)Also: I think maybe the first answer was referring to Solid State Drives (flash memory). But the rest is certainly true: now the market is trending toward the Solid State Drives (SSD) which access memory with a completely different method than the older standard hard drives (HDDs). SSD drives have no moving parts in them and can provide a very large amount of storage in a smaller, lighter package and they can access information much more quickly than a HDD. The only problem is that, for now at least, they are much more expensive.
The space inside the computer for DVD/CD/Floppy(who uses these anymore?) Drives and also Solid State Drives (SSD) and Hard Drives.