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ASR(4)		       BSD/i386 Kernel Interfaces Manual		ASR(4)

NAME
     asr — driver for Adaptec I2O based SCSI/ATA host bus adapters

SYNOPSIS
     device asr

DESCRIPTION
     The Adaptec asr driver provides access to disks and disk arrays con‐
     trolled by I2O based host bus adapters and SmartRAID SCSI RAID adapters
     through the standard SCSI disk da(4) interface.  The adapters currently
     supported include the following RAID adapters:

     Adaptec SCSI RAID 2100S
     Adaptec ATA-100 RAID 2400A
     Adaptec SCSI RAID 3200S
     Adaptec SCSI RAID 3400S
     Adaptec SmartRAID PM1554
     Adaptec SmartRAID PM2554
     Adaptec SmartRAID PM2564
     Adaptec SmartRAID PM2664
     Adaptec SmartRAID PM2865
     Adaptec SmartRAID PM3754
     Adaptec SmartRAID PM3755
     Adaptec SmartRAID PM3757

     Some of the adapters provide 64 bit PCI, Compact PCI, ACPI and up to four
     channels of Ultra 160 SCSI, or two channels of 1GB Fibre.	All support
     RAID-0, RAID-1, RAID-10, RAID-5 and RAID-50 arrays.  All SCSI target
     types are supported.  For the ATA based controllers, one IDE drive per
     channel is supported.  Hot-swapping of IDE drives is not supported at
     this time.

     The PCI adapters automatically configure using the configuration mecha‐
     nism of the bus they are on.  With PCI adapters the IRQ sometimes has to
     be assigned from a BIOS configuration menu (some BIOS's do this automati‐
     cally).

     All host bus adapters must be configured before they can be used with any
     operating system.	Please contact Adaptec directly to obtain the latest
     information on configuration utilities for the adapters.  Currently there
     are both a GUI Motif based configuration utility and a CLI based configu‐
     ration utility available from the Adaptec Web site.  Note that in the
     absence of a native DragonFly version of the configuration utilities does
     not mean one cannot configure the devices via the BIOS based configura‐
     tion tool Storage Manager on ROM (SMOR).

FILES
     /dev/asr*	Adaptec SCSI RAID control nodes

NOTES
     The ATA based controllers present their devices as SCSI-like devices via
     CAM.  For IDE drives attached to these cards, a subset of standard SCSI
     commands and mode pages are understood via translation performed in the
     card's firmware.

SEE ALSO
     da(4)

HISTORY
     The asr (Adaptec SCSI RAID) driver first appeared as the dpti2o driver
     under BSDi BSD/OS 3.2, then under FreeBSD 2.2.8 and was ported over to
     the CAM layer represented in 4.0.

AUTHORS
     The asr driver was kindly donated by Adaptec and is maintained by Mark
     Salyzyn ⟨mark_salyzyn@adaptec.com⟩.  This manual page was written by Mark
     Salyzyn and fixed up by Jeroen Ruigrok van der Werven
     ⟨asmodai@FreeBSD.org⟩.

BSD			       October 27, 2000				   BSD

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