
450 DS8800 Performance Monitoring and Tuning
12.2.4 I/O device driver
The Linux kernel takes control of devices using a device driver. The device driver is a
separate kernel module and is provided for each device (or group of devices) to make the
device available for the Linux operating system. After the device driver is loaded, it runs as a
part of the Linux kernel and takes full control of the device. We describe SCSI device drivers.
SCSI
The Small Computer System Interface (SCSI) is the most commonly used I/O device
technology, especially in the enterprise server environment. In Linux kernel implementations,
SCSI devices are controlled by de ...