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Home > Archive > Data Storage > December 2004 > Boot AIX from SAN using DMP
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Boot AIX from SAN using DMP
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| daniel 2004-12-01, 5:46 pm |
| We are trying to have a diskless AIX system... Booting AIX from our HDS
lightning box it not a problem, works fine. The issue comes up when we
try to frovide redundancy to the rootvg. There are a number of DMP
products we can use HDLM, MPIO or VxVM. However it seems none of them
are supported and the certified configuration from IBM and HDS is to
give two seperate disks to each HBA and use LVM to mirror to these two
disks. Well I dont have to explain to anyone what a rediculous situation
this is... So my question is, is there any other way we can do this,
does anyone have any experiance booting AIX with redundant paths from a SAN?
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| Rob Turk 2004-12-02, 2:45 am |
| "daniel" <falcon_spac_89@hotmail.com> wrote in message
news:41ae4616$1@news.velocitynet.com.au...
> We are trying to have a diskless AIX system... Booting AIX from our HDS
> lightning box it not a problem, works fine. The issue comes up when we try
> to frovide redundancy to the rootvg. There are a number of DMP products we
> can use HDLM, MPIO or VxVM. However it seems none of them are supported
> and the certified configuration from IBM and HDS is to give two seperate
> disks to each HBA and use LVM to mirror to these two disks. Well I dont
> have to explain to anyone what a rediculous situation this is... So my
> question is, is there any other way we can do this, does anyone have any
> experiance booting AIX with redundant paths from a SAN?
It's not as ridiculous as you think. Unless DMP is implemented as an
inherent part of the system or HBA firmware it's impossible to run any DMP
services before AIX is booted. So keeping a mirror is about the only thing
you can do once the system is up. You can do that in hardware too, you don't
need to use software mirroring.
Rob
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