01-17-2012
Help: Disable write cache for battery replacement
Hello Everyone,
I have a AIX 5.2 and saw the following entry in the error report in one of my servers.
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
FFDFB692 0705111911 P H sisraid0 BATTERY PACK FAILURE
Now, we're ready to replace the battery pack but I heard I need to disable the write cache first before doing any replacements. I have no idea on how to do it or check if the write cache is enabled.
Could someone please help?
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LEARN ABOUT MINIX
upscode2
UPSCODE2(8) NUT Manual UPSCODE2(8)
NAME
upscode2 - Driver for UPScode II compatible UPS equipment
NOTE
This man page only documents the hardware-specific features of the upscode2 driver. For information about the core driver, see
nutupsdrv(8).
SUPPORTED HARDWARE
This driver supports UPS equipment which can be controlled via the UPScode II protocol. This is mainly Fiskars, Powerware equipment, but
also some (probably OEM'ed) products from Compaq.
EXTRA ARGUMENTS
This driver supports the following optional settings in the ups.conf(5):
manufacturer=value
Autodetection of this parameter is not possible yet (and it probably never will be). Therefore, this user-defined string accepts any
name. The default is unknown.
input_timeout=value
The timeout waiting for a response from the UPS. Some UPS models have shown to be rather slow, resulting in frequent messages about
empty responses from the UPS. If you see this, try increasing this value.
output_pace=value
Delay between characters sent to the UPS. This was added for completeness with the above parameter. It has not shown to be needed yet.
baudrate=value
The default baudrate is 1200, which is the standard for the UPScode II protocol.
full_update_timer=value
Number of seconds between collection of normative values.
use_crlf
Flag to set if commands towards to UPS need to be terminated with CR-LF, and not just CR.
use_pre_lf
Flag to set if commands towards to UPS need to be introduced with an LF. A Compaq T1500h is known to need this.
COMMANDS
The driver supports the following commands for those UPSen that support them. The available commands are autodetected during
initialization, so you should check availability with upscmd -l.
o test.panel.start - Start UPS self test
o test.battery.start - Start battery self test
o beeper.enable - Enable UPS beeper
o beeper.disable - Disable UPS beeper
o shutdown.return - Shut down in 1 second and wait for power to return
o shutdown.stayoff - Shut down in 1 seconds
o shutdown.reboot - Shut down in 1 seconds and reboot after 1 minute
o shutdown.reboot.graceful - Shut down in 20 seconds and reboot after 1 minute
NOTES
The Powerware UPS models that this driver has been tested against until now have not returned a value for battery.charge. Therefore, the
driver will guestimate a value based on the nominal battery min/max and the current battery voltage.
AUTHOR
Havard Lygre <hklygre@online.no>, Niels Baggesen <niels@baggesen.net>
SEE ALSO
The core driver:
nutupsdrv(8)
Internet resources:
The NUT (Network UPS Tools) home page: http://www.networkupstools.org/
Network UPS Tools 05/21/2012 UPSCODE2(8)