Configure shared storage (RAC setup in Windows)

Hi,
Can I use mapped drive instead of direct connect to the external drive while configuring the shared storage?
My problem is:
I have a LaCie Group SA LaCie Big Disk Extreme LUN 0 IEEE 1394 SBP2 Device (500g). It can only be directly attached to one node because there is only one FW400 port. When I use switch and tried to connect both nodes directly to the device by switch, only one node show it as a disk drive. On another node, the device is utomatically stopped by windows and unaccessible.
Then I tried to map it, but the shared storage test failed.
Any idea?
Thanks
Laura

Hi.
I struggled with this problem, but then I gave up and used VMware to solve the problem:
http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnWindows2003UsingVMware.php
http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnCentos4UsingVMware.php
Howard Rogers has some stuff that might give you a clue also:
http://www.dizwell.com/oracle/articles/laptop_rac.html
Cheers
Tim...

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Shared Storage RAC

Hello,
This is my Oracle RAC 11gR2 real world installation, I need to configure the shared storage for RAC 2 nodes on redhat enterprise linux 5.
could please send me a step by step how to do it? I want to use Device Mapper Multipath for that and ASM for Storage.
Thank you

899660 wrote:
Hello,
This is my Oracle RAC 11gR2 real world installation, I need to configure the shared storage for RAC 2 nodes on redhat enterprise linux 5.
could please send me a step by step how to do it? I want to use Device Mapper Multipath for that and ASM for Storage.
Thank youHi,
Shared storage is a hardware device, which cant be created by you. Ofcourse you can use that shared device to configure ASM.
Check the below links
http://martincarstenbach.wordpress.com/2010/11/16/configuration-device-mapper-multipath-on-oel5-update-5/
http://www.oracle.com/technetwork/database/device-mapper-udev-crs-asm.pdf

Fetch shared storage usage info from windows server.

I am trying to retrieve usage related info of shared storage attached to a server by using:
WMIC logicaldisk get size,freespace,caption,drivetype /Format:csv
The output is fine. But here the Drive type for drive-D is showing as 3, though its a Netapp Lun. Please let me know how to get Lun information. Its becomes tough for me to identify a Netapp volume if it is showing Netapp as Drivetype 3.
I do not have powershell installed in all the servers.So i can not use PS.
OUTPUT:
Node,Caption,DriveType,FreeSpace,Size
Hostname,C:,3,1522081792,20973137920
Hostname,D:,3,38534803456,751148986368
Hostname,E:,3,2867924992,52395274240
Hostname,F:,3,44005818368,73364254720
Hostname,R:,5,,

The link I gave you was not meant to be a exact copy/paste of what you should run, it was just so you could see that someone else managed to determine whether a particular volume was an iSCSI drive or not by using WMI to query the Win32_DiskDrive class and
look at the Model property.
In their case, as you can see from the link I posted (regardless of the language used), the Model property had a value of "iSCSI" when it was an iSCSI drive.
How you use this information is completely up to you: batch/VBScript/PowerShell/C#, whatever. I'm just pointing out what WMI classes to query and what values to compare against.
You're already using WMIC, so just continue using that if you're more comfortable with it.

Oracle 9i RAC setup on Windows 2003.

Hi All,
I am trying to setup the installtion for Oracle 9i RAC on Windows 2003 platform.I am running with the follwing Questions.
1. How to setup the Cluser Files System on the Windows?
My Understainding : I need to have one shared disk so that I can create the Extended Unformateed partition on it and then Set the appropriate logical drive size for each tablespace datafile.
Questions : 1.1 Like I have three WIndows 2003 servers.Can I add this shared disk on any Server and use it.?
2. HOw to install the Cluster databas eon it?

Hi,
Above all, I noticed that 2 similar threads are created before with one deleted and one locked. So do you still have the same issue?
Back to the case, please test to failover to the second node to see if it still cannot see these folders.
If you have any feedback on our support, please send to [email protected]

User equivalence test failed (RAC setup in Windows)

I am trying to set up user equivalence between 2 nodes, following instructions from "Oracle® Database Oracle Clusterware and Oracle Real Application Clusters Installation Guide 10g Release 2 (10.2) for Windows"
The Administrator account on both nodes have the same password. But the test failed. I can't find any trouble shooting doc from metalink.
Anyone can help?
Thank you very much.
Laura

Hi, Try to create a domain account and this domain account should be explicitly set in the local admin group for each node.
Bye
also check Note:388730.1 that can help on windows.
Message was edited by:
Romain VILCOQ
Note:412118.1 is valuable also
Message was edited by:
Romain VILCOQ

O2cb_ctl : unable to load cluster configuration file while RAC setup.

OCFS2: unable to load cluster configuration file
Hi,
I installed OCFS2 successfully.
I successfully install 3 RPMs.
I am getting error while running ocfs2console to do cluster configuration.
I tried to run this manully using "o2cb_ctl -C -n NODENAME -t node -a number=NODENUM -a ip_address=IPADDR -a ip_port=IPPORT -a cluster=CLUSTERNAME "
this commnd. but getting error as
"o2cb_ctl: Unable to access cluster service while creating node Could not add node "
Then I edited this file manually and copied to another nodes using SCP. Then tried to use o2cg_ctl utility as
# /etc/init.d/o2cb offline ocfs2
# /etc/init.d/o2cb unload
# /etc/init.d/o2cb configure
Configuring the O2CB driver.
Next, I configure /etc/ocfs2/cluster.conf:
cluster:
node_count = 2
name = oracle
node:
ip_port = 7777
ip_address = 140.187.222.222
number = 1
name = ocvmrh2053
cluster = oracle
node:
ip_port = 7777
ip_address = 140.187.222.222
number = 2
name = ocvmrh2051
cluster = oracle
Next, I try to load ocfs2 modules by command: o2cb load - everything messages is OK
And I try switch ocfs2 cluster to online (by o2cb online oracle), write this error message:
Starting cluster oracle: Failed
o2cb_ctl: Unable to load cluster configuration file "/etc/ocfs2/cluster.conf"
Stopping cluster oracle: Failed
o2cb_ctl: Unable to load cluster configuration file "/etc/ocfs2/cluster.conf"
I think both errors i get are due to same issue. Please kindly reply if anyone having idea.
Thanks.
Please anyone can help me to resolve this.
Message was edited by:
user596035

provide output of this command from all OCFS2 nodes:
ls -l /etc/ocfs2/cluster.conf
Regards,
Martin

Shared storage setup for 'RAC' env

Hi All ;
Good Morning !
My vmware machine version is : 10.
Could you please share how do we configure shared storage setup in vmware ?

Did you even tried :https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=oracle%2Brac%2Bvmware%2Bworkstation+

How to implement RAC with no shared storage available...

Hello Guys,
I have installed, configured single node RAC R2 with 2 database instances on windows 2000 platform with the help of vmware software. Installation was successfull.
I just meet my boss to explain him my acheivements and to get permission to go for prodcution environment where we will be developing 3 nodes RAC on linux platform.
I asked him that we need a shared stroage system that can be achieved by SAN or NAS or firewire disks... but he refuses to buy any additioan hardware as we have already spend a lot on servers. He wants to me have another computer with a large size Hard Disk Drive to be used as shared storage.
I just want to know can we configure 3 nodes RAC using HDD of an other computer as sommon shared storage...
Please guide me. I really want to implement RAC in our production environment.
Regards,
Imran

Yeah, but would openfiler work? Has any one
implemented RAC using open filer or software
configured shared storage.
Any other better solution as i have to implement it
in production environment and have to seek better
backup facilities.Are you looking for a production environment, or an evaluation environment?
For an evaluation environment OpenFiler works. I occasionally teach RAC classes using that. It works but it is not as fast or as robust as I'd like in production.
For a production environment, plan to pay some money. The least expensive commercial shared stored I have found is from NetApp - any NetApp F8xx or FAS2xx files with iSCSI or even NFS license will do for RAC.
Message was edited by:
Hans Forbrich

When installing clusterware, shared storage trouble

I was trying to install clusterware. When I typed location of OCR, I got error below:
Oracle Cluster Registry (OCR) is not shared across all the nodes in the cluster
Then, I found I can not mount ocfs2 on both nodes at the same time. But I can mount it on any one of nodes if it is umounted on the other one.
Can you anyone give me a hand?
Environment is as following:
- OS: Oracle Linux 5 (update 4)
- Openfiler 3 + ocfs2
- Oracle 10gR2

Hi;
Please see:
http://kr.forums.oracle.com/forums/thread.jspa?messageID=4254569
Oracle 10g RAC install- OPEN FAIL ON DEV
Oracle Cluster Registry (OCR) is not shared across all the nodes . . .
After OCFS2 install/configure ~ Shared storage check check fails
Problem of using OCFS2 as shared storage to install RAC 10g on VMware
Regard
Helios

Pointing existing RAC nodes to a fresh Shared Storage discarding old one

Hi,
I have a RAC Setup with the Primary Database on Oracle 10gR2.
For this setup, there is a Physical Standby Database Setup (using DataGuard configuration) also with 30min delay.
Assume that the "Shared Storage" of the Primary DB fails completely.
In the above scenario, my plan is to refresh a "fresh" shared storage device using Physical Standby Database Setup and then "point" the RAC nodes to the new "Shared Storage".
Is this possible?
Simply put, how can I refresh the Primary database using the Standby Database?
Please help with the utilities (RMAN, DatGuard, other non-Oracle products etc.) that can be used to do this.
Regards

Does following Shared Device configuration is fine for 10g RAC on Windows 2003?
. 1 SCSI drive
• Two PCI network adapters on each node in the cluster.
• Storage cables to attach the shared storage device to all computers.
regard.

DFSr supported cluster configurations - replication between shared storage

I have a very specific configuration for DFSr that appears to be suffering severe performance issues when hosted on a cluster, as part of a DFS replication group.
My configuration:
3 Physical machines (blades) within a physical quadrant.
3 Physical machines (blades) hosted within a separate physical quadrant
Both quadrants are extremely well connected, local, 10GBit/s fibre.
There is local storage in each quadrant, no storage replication takes place.
The 3 machines in the first quadrant are MS clustered with shared storage LUNs on a 3PAR filer.
The 3 machines in the second quadrant are also clustered with shared storage, but on a separate 3PAR device.
8 shared LUNs are presented to the cluster in the first quadrant, and an identical storage layout is connected in the second quadrant. Each LUN has an associated HAFS application associated with it which can fail-over onto any machine in the local cluster.
DFS replication groups have been set up for each LUN and data is replicated from an "Active" cluster node entry point, to a "Passive" cluster node that provides no entry point to the data via DFSn and a Read-Only copy on it's shared cluster
storage.
For the sake of argument, assume that all HAFS application instances in the first quadrant are "Active" in a read/write configuration, and all "Passive" instances of the HAFS applications in the other quadrants are Read-Only.
This guide: http://blogs.technet.com/b/filecab/archive/2009/06/29/deploying-dfs-replication-on-a-windows-failover-cluster-part-i.aspx defines
how to add a clustered service to a replication group. It clearly shows using "Shared storage" for the cluster, which is common sense otherwise there effectively is no application fail-over possible and removes the entire point of using a resilient
cluster.
This article: http://technet.microsoft.com/en-us/library/cc773238(v=ws.10).aspx#BKMK_061 defines the following:
DFS Replication in Windows Server 2012 and Windows Server 2008 R2 includes the ability to add a failover cluster
as a member of a replication group. The DFS Replication service on versions of Windows prior to Windows Server 2008 R2
is not designed to coordinate with a failover cluster, and the service will not fail over to another node.
It then goes on to state, quite incredibly: DFS Replication does not support replicating files on Cluster Shared Volumes.
Stating quite simply that DFSr does not support Cluster Shared Volumes makes absolutely no sense at all after stating clusters
are supported in replication groups and a technet guide is provided to setup and configure this configuration. What possible use is a clustered HAFS solution that has no shared storage between the clustered nodes - none at all.
My question: I need some clarification, is the text meant to read "between" Clustered
Shared Volumes?
The storage configuration must to be shared in order to form a clustered service in the first place. What
we am seeing from experience is a serious degradation of
performance when attempting to replicate / write data between two clusters running a HAFS configuration, in a DFS replication group.
If for instance, as a test, local / logical storage is mounted to a physical machine the performance of a DFS replication group between the unshared, logical storage on the physical nodes is approaching 15k small files per minute on initial write and even high
for file amendments. When replicating between two nodes in a cluster, with shared clustered storage the solution manages a weak 2,500 files per minute on initial write and only 260 files per minute when attempting to update data / amend files.
By testing various configurations we have effectively ruled out the SAN, the storage, drivers, firmware, DFSr configuration, replication group configuration - the only factor left that makes any difference is replicating from shared clustered storage, to another
shared clustered storage LUN.
So in summary:
Logical Volume ---> Logical Volume = Fast
Logical Volume ---> Clustered Shared Volume = ??
Clusted Shared Volume ---> Clustered Shared Volume = Pitifully slow
Can anyone explain why this might be?
The guidance in the article is in clear conflict with all other evidence provided around DFSr and clustering, however it seems to lean towards why we may be seeing a real issue with replication performance.
Many thanks for your time and any help/replies that may be received.
Paul

Hello Shaon Shan,
I am also having the same scenario at one of my customer place.
We have two FileServers running on Hyper-V 2012 R2 as guest VM using Cluster Shared Volume. Even the data partition drive also a part of CSV.
It's really confusing whether the DFS replication on CSV are supported or not, then what would be consequence if using.
In my knowledge we have some customers they are using Hyper-V 2008 R2 and DFS is configured and running fine on CSV since more than 4 years without any issue.
Appreciate if you can please elaborate and explain in details about the limitations on using CSV.
Thanks in advance,
Abul

Shared Storage for RAC

Dear All,
what is the best options for shared storage system for Oracle RAC 10g R2 on windows operating system.
How to share disk in windows so that it can be available in all RAC nodes in Dynamic mode.
Need help from people who have configured RAC on windows operating system and have used shared disk option.
Regards,
Imran

In production, the only realistic options are to turn to certified SAN or NAS vendors.
The issue is simplel - even though many types of shared storage allows you to have multiple machines connected to the same disk, certified shared storage allows these machines to write to the same disk sector and block. Most storage solutions have built-in protection to stop that from happening.
For a small shop, I certainly recommend NetApp NAS.

RAC and Shared Storage

Hi,
I am trying to build a two-node RAC on windows 2003. I have two nodes, RAC1 and RAC2. I have completed the network configuration and now intend to implement shared storage. On RAC1, i have two hard disks.
Is it possible if I create 5 logial partitions on one disk with out formatting and without any drive letter, and consider it a shared storage?
Please guide in this regard.
regards,

Hi, you need a shared storage (for OCR, voting disk and databases files) so DAS disk on one node is not correct.
Regards

RAC shared storage

Hi,
I am trying to build a two-node RAC on windows 2003. I have two nodes, RAC1 and RAC2. I have completed the network configuration and now intend to implement shared storage. On RAC1, i have two hard disks.
Is it possible if I create 5 logial partitions on one disk with out formatting and without any drive letter, and consider it a shared storage?
Please guide in this regard.
regards,

Does following Shared Device configuration is fine for 10g RAC on Windows 2003?
. 1 SCSI drive
• Two PCI network adapters on each node in the cluster.
• Storage cables to attach the shared storage device to all computers.
regard.

10g RAC on varitas Cluster Software & Shared storage

we are in process of making 10g RAC without using Oracle Clusterware , we will be using Varitas Cluster software and varitas shared storage , I am looking for some quick notes/article on setting up/Installing this RAC configuration.

Step-By-Step Installation of 9i RAC on VERITAS STORAGE FOUNDATION (DBE/AC) and Solaris
Doc ID: Note:254815.1
These are the notes i was looking for, Question is Only the RDBMS version will be changes , all other setup will be same as mentioned in Notes, and DBA work will start from creating DBs, right?

Configure shared storage (RAC setup in Windows)

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