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ASE CE on IBM AIX and HACMP

4 posts in Cluster Last posting was on 2009-04-15 18:31:24.0Z
Juan Avila Posted on 2009-04-14 22:37:31.0Z
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From: Juan Avila
Newsgroups: sybase.public.ase.cluster
Subject: ASE CE on IBM AIX and HACMP
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Currently we're in the process of testing ASE CE on IBM AIX,
and we have the following question, regarding software
requirements.

The Installation Guide doesn't mention anything about
requiring HACMP installed, but IBM says that the only way to
have shared raw logical volumes is using HACMP to provide
shared storage. In fact, they say that Oracle RAC uses HACMP
for this. There's also a similar issue regarding the use of
GPFS to provide shared file system.

So, I don't if anyone could confirm us if in fact these two
packages are mandatory for an ASE CE installation on IBM
AIX. The problem is that since the documentation doesn't
clearly mention these requirements, our customer needs to
know if they have to license these additional software
packages.

Thanks a lot!


Sherlock, Kevin [TeamSybase] Posted on 2009-04-15 18:16:24.0Z
From: "Sherlock, Kevin [TeamSybase]" <kevin.sherlock@teamsybase.com>
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Subject: Re: ASE CE on IBM AIX and HACMP
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Your IBM rep is confusing the term "shared raw logical volumes" with a
failover scenario which is what HACMP is all about. In HACMP the raw
devices are only "shared" in the sense that the failover node is able to
mount/import all of the disk volume information of the failed node to the
failover node during the failover process. For ASE CE, you simply need to
be able to mount your same raw volumes to different "active" nodes on the
cluster.

In fact, you don't really want HACMP go through all of the failover steps of
stopping the application (Sybase server), restarting application, remounting
filesystems, importing logical volumes etc.

<Juan Avila> wrote in message news:49e5102a.35e2.1681692777@sybase.com...
> Currently we're in the process of testing ASE CE on IBM AIX,
> and we have the following question, regarding software
> requirements.
>
> The Installation Guide doesn't mention anything about
> requiring HACMP installed, but IBM says that the only way to
> have shared raw logical volumes is using HACMP to provide
> shared storage. In fact, they say that Oracle RAC uses HACMP
> for this. There's also a similar issue regarding the use of
> GPFS to provide shared file system.
>
> So, I don't if anyone could confirm us if in fact these two
> packages are mandatory for an ASE CE installation on IBM
> AIX. The problem is that since the documentation doesn't
> clearly mention these requirements, our customer needs to
> know if they have to license these additional software
> packages.
>
> Thanks a lot!


J Posted on 2009-04-15 18:31:24.0Z
From: jtotally_bogus@sbcglobal.net (J)
Newsgroups: sybase.public.ase.cluster
Subject: Re: ASE CE on IBM AIX and HACMP
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On 14 Apr 2009 15:37:31 -0700, Juan Avila wrote:

I received the following replies on this:

HACMP is not required for ASE CE on IBM AIX.

GPFS does require HACMP, but that's a GPFS requirement and not an
ASE CE requirement as ASE CE does not require GPFS.

Jay

>Currently we're in the process of testing ASE CE on IBM AIX,
>and we have the following question, regarding software
>requirements.
>
>The Installation Guide doesn't mention anything about
>requiring HACMP installed, but IBM says that the only way to
>have shared raw logical volumes is using HACMP to provide
>shared storage. In fact, they say that Oracle RAC uses HACMP
>for this. There's also a similar issue regarding the use of
>GPFS to provide shared file system.
>
>So, I don't if anyone could confirm us if in fact these two
>packages are mandatory for an ASE CE installation on IBM
>AIX. The problem is that since the documentation doesn't
>clearly mention these requirements, our customer needs to
>know if they have to license these additional software
>packages.
>
>Thanks a lot!


Chris N. Brown [Sybase, Inc.] Posted on 2009-04-15 17:40:15.0Z
From: "Chris N. Brown [Sybase, Inc.]" <chris.dot.brown@sybase.dot.com>
Subject: Re: ASE CE on IBM AIX and HACMP
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I've not done an ASE CE install on AIX (yet!), but I can tell you that in
the current release (ESD#4), you need to have shared raw devices
accessible from all of the nodes. They need to be raw however; not
filesystems. If HACMP is needed, then this is an IBM-specific thing; all
other installs that I've done haven't need a cluster manager. The raw
partitions are just exported from the SAN, and mounted at the same place
on each node.

I'd also recommend a clustered filesystem for $SYBASE (not NFS), so you
may very well need HACMP for this too; and $SYBASE needs to be mounted
and accessible by all nodes in the cluster concurrently (This
requirement *MAY* and I repeat, *MAY* change in future releases).

On Tue, 14 Apr 2009 15:37:31 -0700, Juan Avila wrote:

> Currently we're in the process of testing ASE CE on IBM AIX, and we have
> the following question, regarding software requirements.
>
> The Installation Guide doesn't mention anything about requiring HACMP
> installed, but IBM says that the only way to have shared raw logical
> volumes is using HACMP to provide shared storage. In fact, they say that
> Oracle RAC uses HACMP for this. There's also a similar issue regarding
> the use of GPFS to provide shared file system.
>
> So, I don't if anyone could confirm us if in fact these two packages are
> mandatory for an ASE CE installation on IBM AIX. The problem is that
> since the documentation doesn't clearly mention these requirements, our
> customer needs to know if they have to license these additional software
> packages.
>
> Thanks a lot!