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):
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
- Compaq SMART-2/E Controller
- Compaq SMART 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⟩.