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Buying Guide

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Here are a few things that you need to consider when getting a hard drive.

Speed of Hard Drive

The speed of Hard Drive is measured in RPM (Revolution Per Minute), much like automobile.  The most common speeds are 5,400 RPM and 7,200 RPM.  How fast would you like to drive?

Sizes / Capacities of Hard Drive

The smallest size today stood at 20 GB (Gigabyte).  That is suitable for light users who only use word processor, e-mail, surf the net for leisure, etc.  For the average to heavy users who use multiple applications, download huge amount of movies and songs, choose a bigger size like 40 GB or 60 GB or even 80 GB.  You will never regret it when you need more storage space, trust me.  Besides, the larger sizes only cost you a bit more.  You certainly wouldnt want to save that bit of money and then end up paying more later when you buy a 2nd hard disk, would you?

Types of Hard Drives

The 3 typical types of hard drives are:

  • Internal Hard Drive / Fixed Disk Drive
  • External Hard Drive: This is really useful when you do a lot of traveling.  You can input and output your data anywhere you go!
  • Hard Drive Cartridges:  This type of hard drive is similar to the internal type but it can be easily removed.

Other Considerations

  • SATA (Serial ATA) Hard drive:  Provides fast data transfer rate of up to 150 MB/sec.  Bear in mind that you need a SATA controller card to connect the hard disk. 
  • RAID (Redundant Array of Independent Disks):  You can use multiple hard disks to increase disk capacity and speed.  It can also backup your data on the other disks when a drive fails.  You need a RAID controller card for it to work.