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Operating Systems AIX StorWize v3700 and Power8 (S822) AIX, configuration best practice for LUNs? Post 302937506 by dukessd on Thursday 5th of March 2015 07:09:24 PM
Old 03-05-2015
AIX supports the SVC / storwize product natively so you don't need to install SDDpcm and the associated HAS.

The IBM SSIC shows most of the supported options:
https://www-304.ibm.com/systems/supp...perability.wss

Given the mess SDDpcm + HAS can make with being forgotten during AIX updates, or especially during AIX migrations, and that the SDDpcm code is already being integrated into AIX native MPIO, I'd have to think long and hard about whether it's even worth installing these days.

Either way AIX / SDDpcm will cope with lost paths in much the same way as each other, as long as there is an available path you should have nothing to worry about.

Load balance, round robin, Etc, read the docs and make your choice.
Guide to selecting a multipathing path control module for AIX or VIOS

Don't forget to look at the "timeout policy" docs too!
IBM AIX MPIO: Best practices and considerations

Oh, and things like dynamic tracking and fast fail for the fibre interface attributes and the way the two interact....
IBM Knowledge Center

Lots to read, several decisions to make, please feel free to keep discussing things here if anything is unclear - I appreciate it's a bit of a mine field when you are new to this arena.

HTH
Duke.
 

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URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.16.2 2012-02-11 URI::URL(3)
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