The following points summarize the key concepts in this chapter:
- CD-ROM data transfer rates are based on a factor of 150 KB per second.
- Before a CD-ROM drive can be accessed by the processor, the proper drivers must be loaded.
- To run a CD-ROM drive from MS-DOS, the real-mode drivers must be loaded.
Advanced Hard Disk Drives
- For many years, hard disk drives were limited to 528 MB.
- There are four ways to overcome the 528-MB Barrier: LBA, Enhanced CHS translation, Fast ATA, and DMA transfer.
- EIDE controllers and I/O cards support up to four EIDE drives including hard disk drives, tape drives, CD-ROM drives, and removable disk drives.
- SCSI chains can have up to eight devices, including the host adapter (or 16, depending on the configuration) connected together.
- SCSI chains must be terminated at both ends.
- Each device in a SCSI chain must have a unique ID.
- RAID uses SCSI drives to provide improved data storage and fault tolerance.