IBM AIX-AK FZK 2005 manual Design, Upper level

IBM Systems Group

Design

			User Space
			Kernel Space
	SD	SR	ST	SG
upper level	disks	cdrom/dvd	tapes	pass-through
	block device	block device	char device	char device
	(sd_mod.o)	(sr_mod.o)	(st.o)	(sg.o)

IBMTape

char device (IBMtape.o)

mid level

lower level

SCSI unifying layer

(scsi_mod.o, scsi*.[hc], hosts.[hc], constants.c)

SCSI / FC Host Bus	Pseudo drivers for
Adapter drivers	non SCSI buses
(e.g. qla2300.o)	(e.g. ide-scsi.o)

SCSI / FC	SCSI / FC	SCSI / FC	Parallel SCSI / SAN	SCSI / FC
disks	disks	disks		tape

AIX-AK FZK 2005

© 2005 IBM Corporation