NAME

       ida — Compaq Intelligent Drive Array Controllers

SYNOPSIS

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             device scbus
             device ida

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             ida_load="YES"

DESCRIPTION

       The  Compaq  Intelligent  Drive Array (IDA) technology is used to distribute data across an array of hard
       drives.  It unites these hard drives into one or more high-performance logical drives.  The  drive  array
       is managed by an array controller.

       These  controllers  have  the  ability to provide fault tolerance for the connected drives and optionally
       provide write cache for the logical drives.  It is also possible for an application to  access  the  SCSI
       bus subsystem directly by using the pass-through interface.

HARDWARE

       The following controllers are supported by the ida driver:

       •   Compaq SMART Array 221
       •   Compaq Integrated SMART Array Controller
       •   Compaq SMART Array 4200
       •   Compaq SMART Array 4250ES
       •   Compaq SMART 3200 Controller
       •   Compaq SMART 3100ES Controller
       •   Compaq SMART-2/DH Controller
       •   Compaq SMART-2/SL Controller
       •   Compaq SMART-2/P Controller

IMPLEMENTATION NOTES

       Extreme  caution  should be exercised when using the pass-through interface.  It is possible to interfere
       with normal system I/O and cause hangs if pass-through is used to an active device.  Pass-through  should
       only be used to a device that is otherwise quiescent.

SEE ALSO

       cam(4), pass(4), xpt(4), camcontrol(8)

AUTHORS

       The   ida   driver   was   written   by   Jonathan   Lemon   <jlemon@FreeBSD.org>  and  Matthew  N.  Dodd
       <mdodd@FreeBSD.org>.  This manual page was written by Tom Rhodes <trhodes@FreeBSD.org>.

Debian                                          February 15, 2017                                         IDA(4)