NAME¶
tws
—
3ware 9750 SATA+SAS 6Gb/s RAID controller card
driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel
configuration file:
device scbus
device tws
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
DESCRIPTION¶
The
tws
driver provides support for LSI's
3ware 9750 SATA+SAS 6Gb/s RAID controller cards.
These controllers feature the LSISAS2108 6Gb/s SAS RAID-on-Chip (ROC) and are
available in 4- and 8-port configurations, supports RAID levels 0, 1, 5, 6,
10, 50 and single disk, with 96 SATA and/or SAS hard drives and SSDs.
For further hardware information, see
http://www.lsi.com/.
HARDWARE¶
The
tws
driver supports the following
SATA/SAS RAID controller:
- LSI's 3ware SAS 9750 series
LOADER TUNABLES¶
Tunables can be set at the
loader(8) prompt before
booting the kernel or stored in
loader.conf(5).
- hw.tws.cam_depth
- The maximum queued CAM SIM requests for one controller. The default value
is 256.
- hw.tws.enable_msi
- This tunable enables MSI support on the controller if set to a non-zero
value. The default value is 0.
- hw.tws.queue_depth
- The maximum queued requests for one controller.
- hw.tws.use_32bit_sgls
- Limit the driver to use only 32-bit SG elements regardless whether the
operating system is running in 64-bit mode. The default value is 0.
FILES¶
- /dev/da?
- array/logical disk interface
- /dev/tws?
- management interface
DIAGNOSTICS¶
Whenever the driver encounters a command failure, it prints out an error code in
the format: “
ERROR: (<error source>: <error
code>):
”, followed by a text description of the error. There
are other error messages and warnings that the driver prints out, depending on
the kinds of errors that it encounters. If the driver is compiled with
TWS_DEBUG
defined, it prints out a whole
bunch of debug messages.
SEE ALSO¶
da(4),
scsi(4)
AUTHORS¶
The
tws
driver was written by
Manjunath Ranganathaiah for LSI and this
manual page was written by
Xin LI
⟨delphij@FreeBSD.org⟩ for iXsystems, Inc.