Showing posts with label disk. Show all posts
Showing posts with label disk. Show all posts

Thursday, March 29, 2012

Cluster testing

I need to setup a 2 node cluster for testing.
I have 2 identical servers running Win2k3, but I have a question about the
shared disk device.
For the shared disk can I use a NAS device, one that connects thru a cat5,
or do I need a device that uses scsi?
Remember this is for a short term test.
Thanks
SQL Clustering won't support NAS. SCSI would work, but why not try Virtual
Server 2005? That works great!
Cheers,
Rod
MVP - Windows Server - Clustering
http://www.nw-america.com - Clustering
http://msmvps.com/clustering - Blog
"dutch" <dutch@.discussions.microsoft.com> wrote in message
news:2CCAEA46-6F5F-44D6-86A1-5BBAD07F8B18@.microsoft.com...
>I need to setup a 2 node cluster for testing.
> I have 2 identical servers running Win2k3, but I have a question about the
> shared disk device.
> For the shared disk can I use a NAS device, one that connects thru a cat5,
> or do I need a device that uses scsi?
> Remember this is for a short term test.
> Thanks
sqlsql

Tuesday, March 27, 2012

Cluster resource could not be found.

After a reboot of one of my node I am currently receiving the following
message:
The disk associated with the cluster disk resource 'Disk T:' could not be
found. The expected signature of the disk was XXXXXXX. If the disk was
removed from the server cluster, the resource should be deleted. If the disk
was replaced, the resource must be deleted and created again in order to
bring the disk online. If the disk has not been removed or replaced, it may
be inaccessible at this time because it is reserved by another server cluster
node.
How can I create another GUID? Will the installation of the Windows SP1
create a new GUID?
Burley,
You are not lonely. I got the same problem on MSCS.
"Burley" wrote:

> After a reboot of one of my node I am currently receiving the following
> message:
> The disk associated with the cluster disk resource 'Disk T:' could not be
> found. The expected signature of the disk was XXXXXXX. If the disk was
> removed from the server cluster, the resource should be deleted. If the disk
> was replaced, the resource must be deleted and created again in order to
> bring the disk online. If the disk has not been removed or replaced, it may
> be inaccessible at this time because it is reserved by another server cluster
> node.
> How can I create another GUID? Will the installation of the Windows SP1
> create a new GUID?
|||Lemme guess, SCSI-based cluster?
Sometimes a SCSI-based cluster can have problems with one node blocking
access to the shared disk. This is most common during node startup and
especially common when two nodes are started up at the same time. Always
boot one node at a time in a SCSI cluster.
Geoff N. Hiten
Senior Database Administrator
Microsoft SQL Server MVP
"Burley" <Burley@.discussions.microsoft.com> wrote in message
news:591F9019-BCCB-49FD-A749-03267C6A4591@.microsoft.com...
> After a reboot of one of my node I am currently receiving the following
> message:
> The disk associated with the cluster disk resource 'Disk T:' could not be
> found. The expected signature of the disk was XXXXXXX. If the disk was
> removed from the server cluster, the resource should be deleted. If the
> disk
> was replaced, the resource must be deleted and created again in order to
> bring the disk online. If the disk has not been removed or replaced, it
> may
> be inaccessible at this time because it is reserved by another server
> cluster
> node.
> How can I create another GUID? Will the installation of the Windows SP1
> create a new GUID?
sqlsql

Tuesday, March 20, 2012

Cluster Addresses

Hi,
I am a newbie to Clustering so please bear with me.
We have a db environment set up with Win 2003 and SQL 2000 connecting to a
single disk array.
The question I have is, what is the difference between the Cluster IP
Address and the SQL IP address.
What I really want to know is what is the purpose for the two different
addresses?
Thanks for any help.
JD
When you create a cluster, you start working with Virtual Servers. The
cluster itself becomes a Virtual server, as does each SQL instance you
install. Each virtual server consists of a minimum of a physical disk
resource, an IP address, and a network name. Of course, each virtual server
has other resources to make it actually do something useful. So, the
Cluster IP address is used to connect to Cluster control resources and the
SQL IP address is used to connect to SQL service resources. These addresses
are in addition to the IP addresses of the host nodes.
Geoff N. Hiten
Microsoft SQL Server MVP
Senior Database Administrator
Careerbuilder.com
I support the Professional Association for SQL Server
www.sqlpass.org
"jimmy" <jimmy@.discussions.microsoft.com> wrote in message
news:DC5A7EF8-C516-411B-823D-BA36A6E24A85@.microsoft.com...
> Hi,
> I am a newbie to Clustering so please bear with me.
> We have a db environment set up with Win 2003 and SQL 2000 connecting to a
> single disk array.
> The question I have is, what is the difference between the Cluster IP
> Address and the SQL IP address.
> What I really want to know is what is the purpose for the two different
> addresses?
> Thanks for any help.
> JD
|||Hi Geoff,
Thanks for the explanation. We have a single application that points at the
database, so should we use the SQL IP Address to point the application at the
db server?
So from your explanaition if a file share was one of the Cluster resources
and you wanted to acces it. This is when you would use the Cluster address
to access the file share. Like so:
\\ClusterIP\FileShare
Thanks Again
JD
"Geoff N. Hiten" wrote:

> When you create a cluster, you start working with Virtual Servers. The
> cluster itself becomes a Virtual server, as does each SQL instance you
> install. Each virtual server consists of a minimum of a physical disk
> resource, an IP address, and a network name. Of course, each virtual server
> has other resources to make it actually do something useful. So, the
> Cluster IP address is used to connect to Cluster control resources and the
> SQL IP address is used to connect to SQL service resources. These addresses
> are in addition to the IP addresses of the host nodes.
> --
> Geoff N. Hiten
> Microsoft SQL Server MVP
> Senior Database Administrator
> Careerbuilder.com
> I support the Professional Association for SQL Server
> www.sqlpass.org
> "jimmy" <jimmy@.discussions.microsoft.com> wrote in message
> news:DC5A7EF8-C516-411B-823D-BA36A6E24A85@.microsoft.com...
>
>
|||Yes, you use the SQL vurtial server IP address as the connection target.
Personally, I prefer to use the network name. That way, I can play with
Aliases and DNS records during disasters.
You shouldn't use the cluster resource group and quorum disk for anything
extra. You should create another virtual server and add the file service to
that resource group. \\FileShareVirtualServerName\ShareName
Geoff N. Hiten
Microsoft SQL Server MVP
Senior Database Administrator
Careerbuilder.com
I support the Professional Association for SQL Server
www.sqlpass.org
"jimmy" <jimmy@.discussions.microsoft.com> wrote in message
news:641B055A-4878-4E12-AE77-DE4BFDEF3718@.microsoft.com...
> Hi Geoff,
> Thanks for the explanation. We have a single application that points at
the
> database, so should we use the SQL IP Address to point the application at
the
> db server?
> So from your explanaition if a file share was one of the Cluster resources
> and you wanted to acces it. This is when you would use the Cluster
address[vbcol=seagreen]
> to access the file share. Like so:
> \\ClusterIP\FileShare
> Thanks Again
> JD
> "Geoff N. Hiten" wrote:
server[vbcol=seagreen]
the[vbcol=seagreen]
addresses[vbcol=seagreen]
to a[vbcol=seagreen]
different[vbcol=seagreen]
|||Hi Geoff,
Thats great.
Thanks
Jamie.
"Geoff N. Hiten" wrote:

> Yes, you use the SQL vurtial server IP address as the connection target.
> Personally, I prefer to use the network name. That way, I can play with
> Aliases and DNS records during disasters.
> You shouldn't use the cluster resource group and quorum disk for anything
> extra. You should create another virtual server and add the file service to
> that resource group. \\FileShareVirtualServerName\ShareName
> --
> Geoff N. Hiten
> Microsoft SQL Server MVP
> Senior Database Administrator
> Careerbuilder.com
> I support the Professional Association for SQL Server
> www.sqlpass.org
> "jimmy" <jimmy@.discussions.microsoft.com> wrote in message
> news:641B055A-4878-4E12-AE77-DE4BFDEF3718@.microsoft.com...
> the
> the
> address
> server
> the
> addresses
> to a
> different
>
>
|||So...
Are there any restrictions on the Cluster IP and SQL IP?
If I have an internal and external NIC, should one go on each? Can they have neighboring IPs?
The reason I ask is that I set up a new cluster with the Cluster IP on the external NIC and the SQL IP on the internal NIC. At this point everything worked fine. However the requirements changed and I changed the SQL IP from the internal NIC to the external one - with an IP contigious to the Cluster IP. Ever since, I can not get my application to connect over TCP. Sometimes the sql services will not come online either until I change the IPs back to the original settings.
I have changed the IPs both in Cluster Admin and using the SQL installer as indicated in this KB article: http://support.microsoft.com/kb/244980.
Any thoughts?