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#1 (**permalink**) 01-05-2008, 03:06 AM

- HACMP seems very complex to setup and maintain. What does it do
for you that some shell scripts would not? Seems the only thing
that it does is present known code for doing heartbeats across
various media and known code for IP aliasing and IP takeover.

- Given that I have *lots* of ssa disk, to setup the applications
such that they have application IP addresses that can move from
one server to another, and the current server mounts the application
filesystems and resources, etc., is there a way to take all
this ssa disk and make it available through the SAN fabric
(like a low-ball Shark)?

- I've not been comfortable with NIS, it's method of serving
encrypted passwords to multiple platoforms, etc. Is anyone using
NIS across AIX and Linux? How do you share the /etc/security/*
files?

Mike

#2 (**permalink**) 01-05-2008, 03:06 AM

Mike wrote:
> - HACMP seems very complex to setup and maintain. What does it do
> for you that some shell scripts would not? Seems the only thing
> that it does is present known code for doing heartbeats across
> various media and known code for IP aliasing and IP takeover.

Why buy any product? After all, *you* could have written AIX, couldn't
you? Have you ever tried to write and test a HA solution yourself? Be
cautious to ask the question unless you have.

> - Given that I have *lots* of ssa disk, to setup the applications
> such that they have application IP addresses that can move from
> one server to another, and the current server mounts the application
> filesystems and resources, etc., is there a way to take all
> this ssa disk and make it available through the SAN fabric
> (like a low-ball Shark)?

When ESS (aka Shark) first cam out you could integrate existing SSA disk
into one. You should contact IBM to see if that is still available. But
that doesn't help with what you seem to be expressing as the problem.

#3 (**permalink**) 01-05-2008, 03:07 AM

In article <cggfpo$hk2$1@titan.btinternet.com>, Simon Marchese wrote:
> Mike wrote:
>> - HACMP seems very complex to setup and maintain. What does it do
>> for you that some shell scripts would not? Seems the only thing
>> that it does is present known code for doing heartbeats across
>> various media and known code for IP aliasing and IP takeover.
>
> Why buy any product? After all, *you* could have written AIX, couldn't
> you? Have you ever tried to write and test a HA solution yourself? Be
> cautious to ask the question unless you have.

Yes, I have.

>> - Given that I have *lots* of ssa disk, to setup the applications
>> such that they have application IP addresses that can move from
>> one server to another, and the current server mounts the application
>> filesystems and resources, etc., is there a way to take all
>> this ssa disk and make it available through the SAN fabric
>> (like a low-ball Shark)?
>
> When ESS (aka Shark) first cam out you could integrate existing SSA disk
> into one. You should contact IBM to see if that is still available. But
> that doesn't help with what you seem to be expressing as the problem.

That answer does help some. It points to the potential of keeping
the investment in DASD in a form that multiple platforms can use.

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several questions (hacmp, san, nis/ldap)