06-21-2005
We had both, they are based on U60 mobo, the differences are:
Netra 1125 is much smaller depth-wise
E220R is larger
E220R is slightly louder
E220R can have Redundant Power
E220R has hotswap disks
E220R is easier to service (Memory modules in Netra 1125 are hidden under Power Supply, which is a PITA to remove)
That is about all. You can equip 1125 with X1195A without problems.
I would choose E220R over Netra 1125 if possible, unless space is an issue.
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LEARN ABOUT OPENSOLARIS
ntwdt
ntwdt(7D) Devices ntwdt(7D)
NAME
ntwdt - Netra--based application watchdog timer driver
SYNOPSIS
/dev/ntwdt
DESCRIPTION
The ntwdt driver is a multithreaded, loadable, non-STREAMS pseudo driver that provides an application with an interface for controlling a
system watchdog timer.
The ntwdt driver implements a virtual watchdog timer that a privileged application (Effective UID == 0) controls via IOCTLs.
CONFIGURATION
You configure the ntwdt driver by modifying the contents of the ntwdt.conf file.
ERRORS
An open() fails if:
EPERM Effective user ID is not zero.
ENOENT /dev/ntwdt is not present or driver is not installed.
EAGAIN /dev/ntwdt has already been successfully open()'d.
FILES
/dev/ntwdt Special character device.
kernel/drv/sparcv9/ntwdt SPARC ntwdt driver binary.
kernel/drv/ntwdt.conf Driver configuraton file.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcakr.u |
+-----------------------------+-----------------------------+
|Architecture |SPARC |
+-----------------------------+-----------------------------+
SEE ALSO
driver.conf(4), attributes(5)
Writing Device Drivers
SunOS 5.11 05 Feb 2005 ntwdt(7D)