/share/man/man4/ida.4

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  1. .\" $FreeBSD$
    2. 

  2. .\" Written by Tom Rhodes
    3. 

  3. .\" This file is public domain
    4. 

  4. .\"
    5. 

  5. .Dd August 8, 2004
    6. 

  6. .Dt IDA 4
    7. 

  7. .Os
    8. 

  8. .Sh NAME
    9. 

  9. .Nm ida
    10. 

  10. .Nd Compaq Intelligent Drive Array Controllers
    11. 

  11. .Sh SYNOPSIS
    12. 

  12. To compile this driver into the kernel,
    13. 

  13. place the following lines in your
    14. 

  14. kernel configuration file:
    15. 

  15. .Bd -ragged -offset indent
    16. 

  16. .Cd "device scbus"
    17. 

  17. .Cd "device ida"
    18. 

  18. .Ed
    19. 

  19. .Pp
    20. 

  20. Alternatively, to load the driver as a
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  21. module at boot time, place the following line in
    22. 

  22. .Xr loader.conf 5 :
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  23. .Bd -literal -offset indent
    24. 

  24. ida_load="YES"
    25. 

  25. .Ed
    26. 

  26. .Sh DESCRIPTION
    27. 

  27. The Compaq Intelligent Drive Array (IDA) technology is used to
    28. 

  28. distribute data across an array of hard drives.
    29. 

  29. It unites these hard drives into one or more high-performance logical drives.
    30. 

  30. The drive array is managed by an array controller.
    31. 

  31. .Pp
    32. 

  32. These controllers have the ability to provide fault tolerance for the connected
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  33. drives and optionally provide write cache for the logical drives.
    34. 

  34. It is also possible for an application to access the SCSI bus subsystem
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  35. directly by using the pass-through interface.
    36. 

  36. .Sh HARDWARE
    37. 

  37. The following controllers are supported by the
    38. 

  38. .Nm
    39. 

  39. driver:
    40. 

  40. .Pp
    41. 

  41. .Bl -bullet -compact
    42. 

  42. .It
    43. 

  43. Compaq SMART Array 221
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  44. .It
    45. 

  45. Compaq Integrated SMART Array Controller
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  46. .It
    47. 

  47. Compaq SMART Array 4200
    48. 

  48. .It
    49. 

  49. Compaq SMART Array 4250ES
    50. 

  50. .It
    51. 

  51. Compaq SMART 3200 Controller
    52. 

  52. .It
    53. 

  53. Compaq SMART 3100ES Controller
    54. 

  54. .It
    55. 

  55. Compaq SMART-2/DH Controller
    56. 

  56. .It
    57. 

  57. Compaq SMART-2/SL Controller
    58. 

  58. .It
    59. 

  59. Compaq SMART-2/P Controller
    60. 

  60. .It
    61. 

  61. Compaq SMART-2/E Controller
    62. 

  62. .It
    63. 

  63. Compaq SMART Controller
    64. 

  64. .El
    65. 

  65. .Sh IMPLEMENTATION NOTES
    66. 

  66. Extreme caution should be exercised when using the pass-through interface.
    67. 

  67. It is possible to interfere with normal system I/O and cause hangs if
    68. 

  68. pass-through is used to an active device.
    69. 

  69. Pass-through should only be used to a device that is otherwise quiescent.
    70. 

  70. .Sh SEE ALSO
    71. 

  71. .Xr cam 4 ,
    72. 

  72. .Xr pass 4 ,
    73. 

  73. .Xr xpt 4 ,
    74. 

  74. .Xr camcontrol 8
    75. 

  75. .Sh AUTHORS
    76. 

  76. .An -nosplit
    77. 

  77. The
    78. 

  78. .Nm
    79. 

  79. driver was written by
    80. 

  80. .An Jonathan Lemon Aq jlemon@FreeBSD.org
    81. 

  81. and
    82. 

  82. .An Matthew N. Dodd Aq mdodd@FreeBSD.org .
    83. 

  83. This manual page was written by
    84. 

  84. .An Tom Rhodes Aq trhodes@FreeBSD.org .
    85.