Most hard drives have three characteristics of main importance for performance.
1. Size - The size of the hard drive is expressed in terms of Gigabytes which is roughly 1000 Megabytes. It is difficult to buy a drive less than 40 GB today. Typical size is 80 through 120 GB.
2. Speed - The data output of a hard drive is primary limited by the amount of time it takes for the electromagnetic head to reach the data at specific locations on the drive. The primary factor of limitation is hard drive rotation speed. Common speeds today are 5400 RPM (revolutions per minute), 7200 RPM, and 10000 RPM. Considering price and performance, we currently recommend 7200 RPM hard drives.
3. Reliability - The other performance factor that is worth considering is reliability. This is expressed as mean time between failures (MTBF) The higher the number, the better. Look for this specification on the manufacturer's specification sheets for each product.
File System
Index of Hard Disk. It used to locate the data. Normally file system is present in the 2nd sector of the hard disk. Hard disk will store the data in different sector or track even in a single document. When computer read that data, it will be little bit slow. To minimize the slowness there will be one table called FAT (File Allocation Table). File System created by operating system during the installation.
1. Size - The size of the hard drive is expressed in terms of Gigabytes which is roughly 1000 Megabytes. It is difficult to buy a drive less than 40 GB today. Typical size is 80 through 120 GB.
2. Speed - The data output of a hard drive is primary limited by the amount of time it takes for the electromagnetic head to reach the data at specific locations on the drive. The primary factor of limitation is hard drive rotation speed. Common speeds today are 5400 RPM (revolutions per minute), 7200 RPM, and 10000 RPM. Considering price and performance, we currently recommend 7200 RPM hard drives.
3. Reliability - The other performance factor that is worth considering is reliability. This is expressed as mean time between failures (MTBF) The higher the number, the better. Look for this specification on the manufacturer's specification sheets for each product.
File System
Index of Hard Disk. It used to locate the data. Normally file system is present in the 2nd sector of the hard disk. Hard disk will store the data in different sector or track even in a single document. When computer read that data, it will be little bit slow. To minimize the slowness there will be one table called FAT (File Allocation Table). File System created by operating system during the installation.
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