Can we configure link based IPMP in private connectivity in Oracle RAC Post: 302771045

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Operating Systems Solaris Can we configure link based IPMP in private connectivity in Oracle RAC Post 302771045 by DGPickett on Tuesday 19th of February 2013 11:56:00 AM

02-19-2013

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Actually, it will take about 3.2 seconds on average coax, because it does not propagate at full light speed.

When at Honeywell, the IRS bought additional one microsecond cycle core memory for their H-2050 from Cambridge Memories. Somehow someone made some parallel interface cables with slower dialectrics or different effective conducter diameters: slow coax! While they did not exceed cable length, the timing was too late. As my friend Jasper Farrington told them, 9 nanoseconds late is still late. Late means broken.

The ARRL Handbook I perused throught my youth ARRL Handbook 2013 had interesting tables on how much to shorten an antenna from the nominal quarter wave length for different conductor diameters and such. Interestingly, a quarter wave whip over a ground plane is 75 ohms like many flavors of coax, and a half wave antenna with the ends connected together is 300 ohms, so you can make a nice antenna from 300 ohm flat lead, shorting the ends and attaching the 300 ohm feed in the middle, or sometimes a little off middle to widen the banwidth for shorter and longer half waves. You see this on a lot of FM sets, where the 100 MHZ into 300 million meters per second gives you a 1.5 meter antenna, but a bit shorter as the propagation is a bit slow. These work on VHF tv as well, as FM is adjacent to channel 6, which many FM radios can hear at the bottom.

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sgmgr

sgmgr(1M)																 sgmgr(1M)

NAME

       sgmgr - Serviceguard Manager

SYNOPSIS

       filename ] | COMserver username password cluster_name ...]]  COMserver2

   Remarks
       Serviceguard Manager is the graphical user interface for Serviceguard or Serviceguard Extension for RAC software, Version A.11.12 or later,
       Serviceguard products are not included in the standard HP-UX operating system.

DESCRIPTION

       The command starts Serviceguard Manager, the graphical user interface for Serviceguard clusters.  Serviceguard Manager can be installed	on
       HP-UX,  Linux,  or  Windows.  Serviceguard Manager can be used to view saved data files of a single cluster, or to see running clusters. To
       see the "live" cluster map, Serviceguard Manager connects to a Serviceguard node on the same subnet as those clusters,  specifically  to  a
       part of Serviceguard called the Cluster Object Manager (COM).

   Options
       supports  the  options  listed below. No options are required. If any option is not specified, the user will be prompted to supply it after
       the interface opens.

	      Open a previously saved or example object data file. The file will have the .sgm extension. It can display only  one  cluster.  This
	      option cannot be used with any other options.

	      Specify  the  Serviceguard node that will be the server. This node's COM will query cluster objects running on its subnets, and will
	      report their status and configuration.  Servers with Serviceguard Version A.11.12 or later can monitor clusters. Servers	with  Ser-
	      viceguard Version A.11.14 or later can also perform administrative actions. Servers with Version A.11.16 or later can also configure
	      clusters.  To specify multiple sessions, repeat the -s option.

	      The user login name for the COMserver node. Valid only if COMserver is specified.

	      The user password on the COMserver node. Valid only if username is specified.

	      In creating the map, the COMserver will include the cluster where it is a member.

	      In creating the map, the COMserver will report information
			     about the specified cluster_name(s). Specify clusters with the following cluster software installed:  MC/Serviceguard
			     Version  A.10.10  or  later,  MC/LockManager  Version A.11.02 or later, Serviceguard OPS or Extension for RAC Version
			     A.11.08 or later, and all versions of MetroClusters and ContinentalClusters.

	      To see several clusters, repeat the -c option.

	      If you specify this unused nodes option all COMservers will report information about nodes that have Serviceguard installed, but are
	      not currently configured in any cluster.

	      To connect to another COMserver for another session, repeat the -s options.

AUTHOR

       was developed by HP.

SEE ALSO

       See documents at http://docs.hp.com/hpux/ha including:

       Managing Serviceguard.
       Configuring OPS Clusters with Serviceguard OPS Edition.
       Using Serviceguard Extension for Real Application Cluster (RAC).

Series 700 or 800		    Works with Optional Serviceguard or Serviceguard Extension for RAC Software 			 sgmgr(1M)