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


      device asr


      The Adaptec asr driver provides access to disks and disk arrays con‐
      trolled by I2O based host bus adapters and SmartRAID SCSI RAID adapters
da(4) interface.
      The supported adapters provide 64 bit PCI, Compact PCI, Zero Channel PCI,
      and up to four channels of Ultra2, Ultra 160, or Ultra320 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.
      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 Motif based GUI configuration utility and a CLI based configu‐
      ration utility available from the Adaptec Web site.  The cards and arrays
      can also be configured via the BIOS based configuration tool (SMOR).


      The adapters currently supported by the asr driver include the following:
            Adaptec Zero-Channel SCSI RAID 2000S, 2005S, 2010S, 2015S
            Adaptec SCSI RAID 2100S, 2110S
            Adaptec ATA-100 RAID 2400A
            Adaptec SCSI RAID 3200S, 3210S
            Adaptec SCSI RAID 3400S, 3410S
            Adaptec SmartRAID PM1554
            Adaptec SmartRAID PM1564
            Adaptec SmartRAID PM2554
            Adaptec SmartRAID PM2564
            Adaptec SmartRAID PM2664
            Adaptec SmartRAID PM2754
            Adaptec SmartRAID PM2865
            Adaptec SmartRAID PM3754
            Adaptec SmartRAID PM3755U2B / SmartRAID V Millennium
            Adaptec SmartRAID PM3757
            DEC KZPCC-AC (LVD 1-ch, 4MB or 16MB cache), DEC KZPCC-CE (LVD 3-ch,
          64MB cache), DEC KZPCC-XC (LVD 1-ch, 16MB cache), DEC KZPCC-XE (LVD
          3-ch, 64MB cache) -- rebadged SmartRAID V Millennium


      /dev/asr*  Adaptec SCSI RAID control nodes


      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.


      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.


      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


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