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Top Forums UNIX for Dummies Questions & Answers UNIX Admin asking for Swap LUN Post 302223960 by zaxxon on Tuesday 12th of August 2008 01:25:38 AM
Old 08-12-2008
Swap space is like in Windows your RAM on hard disks where stuff that normally resides in your RAM is swapped/paged out so it is not lost. Needless to say, that this is many times slower than getting your data from RAM.
For you as Clariion admin you should take Raid 1, which is a bit faster than Raid 5 and absoluteley sufficient. If the box crashes, everything is in swap space is useless after a reboot anyways afaik.
If a Unix/Linux box and also a Windows box starts to swap, there is either a bad tuned system or just too few RAM, so it doesn't matter that much, how much effort you put in creating the fastest swap space you can provide with separate FC adapters etc.

Short version - if a box starts to swap, it's performance is degrading very bad and it will need tuning or more physical RAM. A fast or big swap space on disk is usually not as fast as real RAM.

Nevertheless, you just bind a LUN, Raid 1 as usual, assign it to a storage group as usualy and have you LUN masking with Access Logix, that's all. The Unix host will see new physical volume and the swap space can be created on it.

I hope this helped a bit.
 

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Module::Install::Admin(3)				User Contributed Perl Documentation				 Module::Install::Admin(3)

NAME
Module::Install::Admin - Author-side manager for Module::Install SYNOPSIS
In a Module::Install extension module: sub extension_method { my $self = shift; $self->admin->some_method(@args); } As an one-liner: % perl "-MModule::Install::Admin" -e'&some_method(@args);' The two snippets above are really shorthands for $some_obj->some_method(@args) where $some_obj is the singleton object of a class under the "Module::Install::Admin::*" namespace that provides the method "some_method". See "METHODS" for a list of built-in methods. DESCRIPTION
This module implements the internal mechanism for initializing, including and managing extensions, and should only be of interest to extension developers; it is never included under a distribution's inc/ directory, nor are any of the Module::Install::Admin::* extensions. For normal usage of Module::Install, please see Module::Install and "COOKBOOK / EXAMPLES" in Module::Install instead. Bootstrapping When someone runs a Makefile.PL that has "use inc::Module::Install", and there is no inc/ in the current directory, Module::Install will load this module bootstrap itself, through the steps below: o First, Module/Install.pm is POD-stripped and copied from @INC to inc/. This should only happen on the author's side, never on the end- user side. o Reload inc/Module/Install.pm if the current file is somewhere else. This ensures that the included version of inc/Module/Install.pm is always preferred over the installed version. o Look at inc/Module/Install/*.pm and load all of them. o Set up a "main::AUTOLOAD" function to delegate missing function calls to "Module::Install::Admin::load" -- again, this should only happen at the author's side. o Provide a "Module::Install::purge_self" function for removing included files under inc/. METHODS
SEE ALSO
Module::Install AUTHORS
Audrey Tang <autrijus@autrijus.org> COPYRIGHT
Copyright 2003, 2004 by Audrey Tang <autrijus@autrijus.org>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See <http://www.perl.com/perl/misc/Artistic.html> perl v5.16.3 2012-03-01 Module::Install::Admin(3)
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