Yes I know but can we pickup whatever 1 disk and make it use AIX PCM or vice versa? Just want to know the possibility.
But I wonder why how they can have the 2 different drivers. I detect hdisk18 belongs to IBMSVC which is using AIX PCM whereas the others are using SDDPCM.
So what is IBMSVC? can we move disk from IBMSVC to 2017DS8K? I can see that all the LUNs comes from 1 source storage and visible to all 4 FCs adapters.
We are looking at running MPIO for it's redundancy and load balancing benefits. Does anyone know what pieces of software or modules are needed on the VIO server to get load balancing to work. Remember we are using EMC's DMX3500 storage system. We no longer want to use Powerpath. :rolleyes: ... (2 Replies)
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... (8 Replies)
Hi folks,
does anybody have a link to a documentation how to implement native MPIO on AIX? We are using EMC PowerPath and Datacore SanSymphony/Cambex for this so far and I wasn't able to find a good description on that topic. All I know so far is that mkpath, chpath and lspath are used to... (3 Replies)
Can anyone recommend me some reading material surrounding how AIX handles LUNs:
- with and without MPIO installed
- with and without SDD or SDDPCM installed
Where does lspath sit in all of this (MPIO layer?). Can a system be built with just MPIO software? Is MPIO software even needed?
I guess... (0 Replies)
On a particular LPAR, I was running AIX 5.3 TL 3. On Monday I did an update of the LPAR to 5.3 TL 9 SP2. The install was smooth, but then I ran into a problem.
The MPIO driver does not work with LSI's StoreAge (SVM4). I did some looking, and looks like
5.3 TL3 = IBM.MPIO 5.3.0.30
5.3... (0 Replies)
Hi,
we have a vew boxes using MPIO and they are connected to some virtualization software managing some disk subsystems, offering volumes to the AIX boxes.
Sometimes when a cable has been plugged out for a test or when a real problem occurs, using lspath to show the state of the paths shows... (8 Replies)
Hello,
we are planning to deploy some of our databases on AIX/LPAR based servers (we didn't bought it yet ...). IBM's engineers says that if we want to boot them from SAN the hardware array has to be compatible with MPIO but they don't want to deliver any document with list of arrays supported... (5 Replies)
We have AIX 6.1 system attached to SAN disks (DS4700 and DS8100) thru SVC.
Initially when the system was I forgot to install sddpcm drivers. and wanted to know how can i go with the installation of the sddpcm drivers.
My understandin going thru the manual ... (3 Replies)
This is getting very confusing for me, and appreciate if someone can help.
Platform: Power VM ( Virtual I/O Server)
ioslevel 2.1.3.10-FP23
# oslevel -s
6100-05-00-0000
Storage: IBM DS4300
Two HBAs - Dual Port Fibre Adapter Channels
Each card has two ports , so a total of 4 ports going... (3 Replies)
Discussion started by: filosophizer
3 Replies
LEARN ABOUT DEBIAN
chi::driver::rawmemory
CHI::Driver::RawMemory(3pm) User Contributed Perl Documentation CHI::Driver::RawMemory(3pm)NAME
CHI::Driver::RawMemory - In-process memory cache that stores direct references
VERSION
version 0.54
SYNOPSIS
use CHI;
my $hash = {};
my $cache = CHI->new( driver => 'RawMemory', datastore => $hash );
my $cache = CHI->new( driver => 'RawMemory', global => 1 );
DESCRIPTION
This is a subclass of CHI::Driver::Memory that stores references to data structures directly instead of serializing / deserializing. This
makes the cache faster at getting and setting complex data structures, but unlike most drivers, modifications to the original data
structure will affect the data structure stored in the cache, and vica versa. e.g.
my $cache = CHI->new( driver => 'Memory', global => 1 );
my $lst = ['foo'];
$cache->set('key' => $lst); # serializes $lst before storing
$cache->get('key'); # returns ['foo']
$lst->[0] = 'bar';
$cache->get('key'); # returns ['foo']
my $cache = CHI->new( driver => 'RawMemory', global => 1 );
my $lst = ['foo'];
$cache->set('key' => $lst); # stores $lst directly
$cache->get('key'); # returns ['foo']
$lst->[0] = 'bar';
$cache->get('key'); # returns ['bar']!
CONSTRUCTOR OPTIONS
Same as CHI::Driver::Memory.
SIZE AWARENESS
For the purpose of size-awareness, all items count as size 1 for this driver. (Because data structures are not serialized, there's no good
way to determine their size.)
# Keep a maximum of 10 items in cache
#
my $cache = CHI->new( driver => 'RawMemory', datastore => {}, max_size => 10 );
ACKNOWLEDGEMENTS
Thanks to Yuval Kogman whose Cache::Ref inspired me to do this.
SEE ALSO
CHI::Driver::Memory, CHI
AUTHOR
Jonathan Swartz <swartz@pobox.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Jonathan Swartz.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
perl v5.14.2 2012-05-30 CHI::Driver::RawMemory(3pm)