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File System

4 posts in Cluster Last posting was on 2009-07-09 01:50:22.0Z
Leonid Posted on 2009-07-07 15:05:49.0Z
From: "Leonid" <lneizberg@gmail.com>
Newsgroups: sybase.public.ase.cluster
Subject: File System
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Article PK: 48436

In the Installation Guide written:

RHEL 4, 5
Global File System 6.1



But this file system is for Linux Cluster .
On the other I don't need Linux Cluster for ASE CE.

So can somebody advice with more details about file system in Linux RHEL5.

Thanks.
Leonid.


Chris N. Brown [Sybase, Inc.] Posted on 2009-07-07 15:55:44.0Z
From: "Chris N. Brown [Sybase, Inc.]" <chris.dot.brown@sybase.dot.com>
Subject: Re: File System
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Article PK: 48435

The clustered filesystem requirement is (was) for $SYBASE -- especially
in 15.0.1 CE. In that version, you only had 1 copy of the binaries, so
the $SYBASE installation was shared amongst all of the nodes. (If you
didn't want to use a clustered filesystem, you could use NFS for
$SYBASE). But, many customers didn't like using NFS, and so the only
other way to guarantee that the installation was accessible from each
node was to use a cluster-based filesystem.

In 15.0.3 CE, you have the option of installing $SYBASE locally on each
node (vs being shared among all of them) and thus you don't need a
clustered filesystem for that -- but bear in mind you'll need one for
either shared filesystems for things like backups, administrative
directories that need to be seen from all nodes, etc (or you can use NFS
filesystems for this if you don't want to use GFS).

Bear in mind that for database devices, cluster edition right now still
only supports raw partitions on Linux.

HTH,
Chris

On Tue, 07 Jul 2009 08:05:49 -0700, Leonid wrote:

> In the Installation Guide written:
>
> RHEL 4, 5
> Global File System 6.1
>
>
>
> But this file system is for Linux Cluster . On the other I don't need
> Linux Cluster for ASE CE.
>
> So can somebody advice with more details about file system in Linux
> RHEL5.
>
> Thanks.
> Leonid.


Leonid Posted on 2009-07-07 16:11:20.0Z
From: "Leonid" <lneizberg@gmail.com>
Newsgroups: sybase.public.ase.cluster
References: <4a53644d$2@forums-3-dub.sybase.com> <4a537000$2@forums-3-dub.sybase.com>
Subject: Re: File System
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Article PK: 48441

Thank You Chris,

>you could use NFS for $SYBASE

Can I use NFS also for shared Sybase devices(DB's)?

So I'll don't need GFS at all?

Leonid.

"Chris N. Brown [Sybase, Inc.]" <chris.dot.brown@sybase.dot.com> wrote in
message news:4a537000$2@forums-3-dub.sybase.com...
>
> The clustered filesystem requirement is (was) for $SYBASE -- especially
> in 15.0.1 CE. In that version, you only had 1 copy of the binaries, so
> the $SYBASE installation was shared amongst all of the nodes. (If you
> didn't want to use a clustered filesystem, you could use NFS for
> $SYBASE). But, many customers didn't like using NFS, and so the only
> other way to guarantee that the installation was accessible from each
> node was to use a cluster-based filesystem.
>
> In 15.0.3 CE, you have the option of installing $SYBASE locally on each
> node (vs being shared among all of them) and thus you don't need a
> clustered filesystem for that -- but bear in mind you'll need one for
> either shared filesystems for things like backups, administrative
> directories that need to be seen from all nodes, etc (or you can use NFS
> filesystems for this if you don't want to use GFS).
>
> Bear in mind that for database devices, cluster edition right now still
> only supports raw partitions on Linux.
>
> HTH,
> Chris
>
>
> On Tue, 07 Jul 2009 08:05:49 -0700, Leonid wrote:
>
>> In the Installation Guide written:
>>
>> RHEL 4, 5
>> Global File System 6.1
>>
>>
>>
>> But this file system is for Linux Cluster . On the other I don't need
>> Linux Cluster for ASE CE.
>>
>> So can somebody advice with more details about file system in Linux
>> RHEL5.
>>
>> Thanks.
>> Leonid.
>


Jeff Tallman [Sybase] Posted on 2009-07-09 01:50:22.0Z
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From: "Jeff Tallman [Sybase]" <jeff.tallman@sybase.com>
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To: Leonid <lneizberg@gmail.com>
Subject: Re: File System
References: <4a53644d$2@forums-3-dub.sybase.com> <4a537000$2@forums-3-dub.sybase.com> <4a5373a8$1@forums-3-dub.sybase.com>
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Article PK: 48445

NFS is strongly not recommended. Not only are there a lot of issues
with it normally when writing to it with any speed, I have had some real
bad experiences with it with ASE/CE.

No - you *must* use raw for data devices. GFS (which is a separate
install package under RHEL 5.3) was only used for $SYBASE - I wouldn't
even use it for that. Like Chris says, with ASE/CE 15.0.3 you can do
the local install - which is what I would do. Additionally with
multiple backup servers you don't even need GFS for backups - but
personnally, if using a SAN, it's backup speed/capabilities are the best
to explore as it has no cpu/IO impact on applications.

Jeff Tallman
Enterprise Data Management Products Technical Evangelism
jeff.tallman@sybase.com
http://blogs.sybase.com/database

Leonid wrote:
> Thank You Chris,
>
>> you could use NFS for $SYBASE
>
> Can I use NFS also for shared Sybase devices(DB's)?
>
> So I'll don't need GFS at all?
>
> Leonid.
>
> "Chris N. Brown [Sybase, Inc.]" <chris.dot.brown@sybase.dot.com> wrote in
> message news:4a537000$2@forums-3-dub.sybase.com...
>> The clustered filesystem requirement is (was) for $SYBASE -- especially
>> in 15.0.1 CE. In that version, you only had 1 copy of the binaries, so
>> the $SYBASE installation was shared amongst all of the nodes. (If you
>> didn't want to use a clustered filesystem, you could use NFS for
>> $SYBASE). But, many customers didn't like using NFS, and so the only
>> other way to guarantee that the installation was accessible from each
>> node was to use a cluster-based filesystem.
>>
>> In 15.0.3 CE, you have the option of installing $SYBASE locally on each
>> node (vs being shared among all of them) and thus you don't need a
>> clustered filesystem for that -- but bear in mind you'll need one for
>> either shared filesystems for things like backups, administrative
>> directories that need to be seen from all nodes, etc (or you can use NFS
>> filesystems for this if you don't want to use GFS).
>>
>> Bear in mind that for database devices, cluster edition right now still
>> only supports raw partitions on Linux.
>>
>> HTH,
>> Chris
>>
>>
>> On Tue, 07 Jul 2009 08:05:49 -0700, Leonid wrote:
>>
>>> In the Installation Guide written:
>>>
>>> RHEL 4, 5
>>> Global File System 6.1
>>>
>>>
>>>
>>> But this file system is for Linux Cluster . On the other I don't need
>>> Linux Cluster for ASE CE.
>>>
>>> So can somebody advice with more details about file system in Linux
>>> RHEL5.
>>>
>>> Thanks.
>>> Leonid.
>
>