https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655467#M614997 The first is a SCSI card which extends the bus, the second and third is the SCSI controller instance with SCSI ID 7. Thu, 01 Jul 2010 07:40:24 GMT Torsten. 2010-07-01T07:40:24Z https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655466#M614996 who can tell me the meaning to ext_bus,initiator, I really don't understand them, thanks for your support!<BR /><BR />#ioscan<BR />0/2/1/0 ext_bus SCSI Ultra320 A6961-60011<BR />0/2/1/0.7 target <BR />0/2/1/0.7.0 ctl Initiator Thu, 01 Jul 2010 07:36:38 GMT https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655466#M614996 study unix 2010-07-01T07:36:38Z https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655467#M614997 The first is a SCSI card which extends the bus, the second and third is the SCSI controller instance with SCSI ID 7. Thu, 01 Jul 2010 07:40:24 GMT https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655467#M614997 Torsten. 2010-07-01T07:40:24Z https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655468#M614998 It's a bit old, but still good:<BR /><BR /><A href="http://docs.hp.com/en/B2355-90053/ch01s04.html" target="_blank">http://docs.hp.com/en/B2355-90053/ch01s04.html</A> Thu, 01 Jul 2010 08:06:46 GMT https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655468#M614998 Torsten. 2010-07-01T08:06:46Z https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655469#M614999 HI<BR />Many thanks for your support! Thu, 01 Jul 2010 08:18:19 GMT https://community.hpe.com/t5/operating-system-hp-ux/ioscan-output/m-p/4655469#M614999 study unix 2010-07-01T08:18:19Z