Differences between hard disk IDE interfaces and disk arrays in Linux

In Linux, the hard disk IDE interface and the disk array can be distinguished by the sda and hda parameters. The IDE interface does not have the scsi-list: fdisk-l # scsi Disk array Disk/dev/sda: 18.2 GB, 18210037760 bytes255 heads, 63 sectors/track, 2213 cylindersUnits = cylinders of 16065*512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 13 104391 83 Linux/dev/sda2 14 2083 16627275 83 Linux/dev/ sda3 2084 2213 1044225 82 Linux swapmore/proc/scsi www.2cto.com Attached devices: host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: HP 18.2G Model: MAN3184MP Rev: HP04 Type: Direct-Access ansi scsi revision: 02 IDE: /sbin/fdisk-lDisk/dev/hda: 40.0 GB, 40027029504 bytes255 heads, 63 sectors/track, 4866 cylindersUnits = cylinders of 16065*512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/hda1 * 1 4605 36989631 4606 83 Linux/dev/hda2 4866 2096482 + 82 Linux swap/ solaris author asd1986_n