• Also known as seek time • Time to find desired data • Measured in milliseconds • Depends on two factors. • RPM- Revolutions Per Minute[r]
(1)Interfacing with Computer
ADE100- Computer
Literacy
(2)Knowledge test
• What is the difference between drives and folders • What is the purpose of file extensions? Give two
examples
• What is the purpose of windows explorer? • Differentiate between cut and copy
(3)Topics covered
• Types of storage devices
• Practically knowing and accessing storage
devices/drives
(4)(5)6B-5
Measuring & Improving Drive
Performance
•
Average access time
• Also known as seek time • Time to find desired data • Measured in milliseconds • Depends on two factors
• RPM- Revolutions Per Minute
• Time to access a track
(6)6B-6
Drive Performance
•
Data transfer rate
• How fast data can be read • Measured in Bps or bps
• Hard drive ranges from 15 to 160MBps • CD ROMS depend on X factor
• 24x CD transfers 24 x 150KBps
(7)(8)Optimizing Performance
•
Disk optimization (boosting)
• Handled by operating system tools • Routine disk maintenance
(9)Optimizing Performance
•
Clean up unnecessary files
• Delete temp files
• Uninstall unused programs • Delete obsolete data files
(10)Optimizing Performance
•
Scan a disk for errors
• Bad spots on the media • Find and fix the error
• Move data to a good spot
• Mark the spot as bad