You can easily understand the hard drive specifications for computers. Most of the time we want to know about speed and capacity of a drive. There are several things to look for in a hard drive.
Guide to Desktop Hard Drives
The measurement tool for hard drives is GB and TB (Gigabytes and terabytes) used by the manufacturers and computer systems. This is the unformulated capacity of a storage drive having a large number of bytes. After the formatting the drive have less number of bytes. This is something related to advertised vs. actual storage capacities.
You can easily determine the size of the drive because the higher the number the more capacity of the drive is. So the hard drives have become popular in terabytes now.
Majority of the PCs spin at a 7200rpm rate. Even there are some high-performance drives which can spin at 10000rpm rate. Many of the high capacity hard drives are produced for desktop computers. They are known as green drives and can spin at 5400rpm rate. Green drives offer speed like 7200rpm but use much less power and produces less heat.
SSDs, Hybrid Drives and Caching
Solid state drives are the advance form of hard drives and best replacement. SSDs unlike the hard drives with moving parts and magnetic disks, uses flash memory modules where data is stored and has no moving parts. This makes them faster as well as less prone to corruption of data and are highly reliable to any shocks and knocks. They are quite but expensive storage solution. SSDs are available in same size to HDDs but are expensive.
The most common use of SSDs is for caching to increase the performance of the desktop system. This is only available for the certain level-based desktop systems and its smart response technology. Though there are several other caching solutions available but they have their own software and hardware requirements.
Similarly another option is the SSHD (Solid State Hybrid drive). This is the combination of hard drive and solid state drive in one physical case. The real advantage is to achieve speed and space. With SSD caching you can achieve speed and with HDD size you can store large amount of data and access it with speed.
Hybrid drives are best for smaller notebook-class drives but can be used for desktops as they are smaller and have less capacity. They are used for accelerating non-windows based systems as the ISRT caching option simply works for Microsoft Windows operating system.
How Drive Capacity Requirement
You can determine the size of the drive by your tasks of computers. Depending upon the tasks you can choose your desired size and type of hard drive. Fortunately, the storage drives are grown in size to certain level allowing you to store several terabytes in few dollars. Let’s see the common computing tasks and the requried hard drives for them.
Word Processing: 250GB and Higher, 5400rpm
Web Surfing: 320GB and Higher, 7200rpm
Digital Music: 750GB and Higher, 7200 rpm
Gaming: 1TB and Higher, 7200 rpm
Graphics Editing: 1.5TB and Higher, 7200 rpm
Digital Video: 2TB and Higher, 7200 rpm
Using these guidelines you can consider the amount of storage space you need to tackle these processes. You can find large capacity storage drives for your computer system and sometimes mixing them with SSD will be good for boot/OS system.
RAID stand for redundant array of inexpensive disks which generally makes the HDDs live longer while protecting the data. In RAID multiple drives are piled up to determine a RAID level ranging from 0 to 5 and then 10. Every RAID level has certain requirements and advantage as well as drawbacks.