10-08-2008
AIX 5.3 MPIO vs RDAC on DS4000 range
Hi
I would like to ask what the benefits are of changing from RDAC to MPIO when connecting to a DS4000 on AIX 5.3? I have heard that IBM MPIO "might" support more than 1 active path to a LUN when connecting to a DS4800 through more than 1 host connection on the same AIX client. I understand that this will require specific AIX levels as well as DS4000 firmware levels. I am currently converting from 2 seperate VIO servers in one system to dual redundant path VIOS. Thus I will need MPIO on the VIO clients. However is it advised to run MPIO on the VIOS as well? and are there benifits in changing to MPIO on AIX 5.3 from RDAC?
Thanx
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LEARN ABOUT DEBIAN
mheard
MHEARD(1) Linux Programmer's Manual MHEARD(1)
NAME
mheard - display AX.25 calls recently heard.
SYNOPSIS
mheard [-d cmns] [-n] [-o cfpt] [-v] [port...]
DESCRIPTION
Mheard displays information about most recently heard AX.25 callsigns, the interface upon which they were heard, the total packets heard,
the time at which the last one was heard and other information. Mheard displays different information, in different orders depending on
the settings of the arguments. Information on specific ports can be displayed by giving the port names as arguments.
OPTIONS
-d cmns Sets the information that is displayed for each AX.25 callsign heard. The different arguments are:
c Display all the information with regard to callsigns, from-callsign, to-callsign, port name, and any digipeaters that may
be in use.
m Display miscellaneous information, the from-callsign, port name, no frames heard, the last type of frames heard, and
which different PIDs have been heard from that station.
n Display the default information. This is the from-callsign, port name, no frames heard and the date and time last heard.
s Displays statistics about the station heard, the from-callsign, port name, no I frames, no S frames, no U frames, time
first heard, and time last heard.
-n Supress the displaying of titles.
-o cfpt Sets the ordering of the information displayed. The meanings of the different arguments are:
c Sort list by from-callsign.
f Sort list by number of frames heard.
p Sort list by port name.
t Sort list by the time last heard, this is the default.
-v Display the version.
FILES
/var/ax25/mheard/mheard.dat
/etc/ax25/axports
SEE ALSO
ax25(4), mheardd(8).
AUTHOR
Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>
Linux 19 August 1996 MHEARD(1)