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Oracle RAC comparison

Created: 28 Jan 2011 • Updated: 14 Feb 2011 | 4 comments
Muhammad Ishaq Khan's picture
This issue has been solved. See solution.

Hi there:

I need Symantec Storage Foundation (CFS HA/DR) and Oracle RAC comparison (technical comparison).

Best regards


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Gaurav Sangamnerkar's picture

Hello Ishaq,

I am quite unclear, what sort of comparision you are looking for ?  Oracle RAC is a parallel database in iteself however Symantec CFS/HA/DR will provide infrastructure to run Oracle RAC. Oracle has its own Clusterware software but with SFRAC, clusterware (Cluster ready services also called CRS) is configured with SFRAC stack.

If you talk about SFRAC:

About Veritas Storage Foundation for Oracle RAC

Veritas Storage Foundation™ for Oracle® RAC (SF Oracle RAC) leverages
proprietary storage management and high availability technologies to enable
robust, manageable, and scalable deployment of Oracle RAC on UNIX platforms.
The solution uses Veritas Cluster File System technology that provides the dual
advantage of easy file system management as well as the use of familiar operating
system tools and utilities in managing databases.
The solution stack comprises the Veritas Cluster Server (VCS), Veritas Cluster
Volume Manager (CVM), Veritas Cluster File System (CFS), and Veritas Storage
Foundation, which includes the base Veritas Volume Manager (VxVM) and Veritas
File System (VxFS).

Benefits of SF Oracle RAC

SF Oracle RAC provides the following benefits:

■ Support for file system-based management. SF Oracle RAC provides a generic
clustered file system technology for storing and managing Oracle data files
as well as other application data.
■ Support for high-availability of cluster interconnects. The combination of
LMX/LLT protocols and the PrivNIC/MultiPrivNIC agents provides maximum
bandwidth as well as high availability of the cluster interconnects, including
switch redundancy.
■ Use of clustered file system and volume management technologies for
placement of Oracle Cluster Registry (OCR) and voting disks. These technologies
provide robust shared block and raw interfaces for placement of OCR and
voting disks. In the absence of SF Oracle RAC, separate LUNs need to be
configured for OCR and voting disks.
■ Support for a standardized approach toward application and database
management.Asingle-vendor solution for the complete SF OracleRACsoftware
stack lets you devise a standardized approach toward application and database
management. Further, administrators can apply existing expertise of Veritas
technologies toward SF Oracle RAC.
■ Increased availability and performance using dynamic multi-pathing (DMP).
DMP provides wide storage array support for protection from failures and
performance bottlenecks in the HBAs, SAN switches, and storage arrays.
■ Easy administration and monitoring of SF Oracle RAC clusters from a single
web console.
■ Support for many types of applications and databases.
■ Improved file system access times using Oracle Disk Manager (ODM).
■ Ability to configure ASM disk groups over CVM volumes to take advantage of
dynamic multi-pathing (DMP).
■ Enhanced scalability and availability with access to multiple Oracle RAC
instances per database in a cluster.
■ Support for backup and recovery solutions using volume-level and file
system-level snapshot technologies. SF Oracle RAC enables full volume-level
snapshots for off-host processing and file system-level snapshots for efficient
backup and rollback.
■ Ability to failover applications without downtime using clustered file system

Source, -- SFRAC Installtion & Configuration guide, Guide can be found here:


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Muhammad Ishaq Khan's picture

Hi Gaurav,

Thanks for your kind reply...

Actually I nee Comparison between  Oracle® Real Application Clusters and Symantec Storage foundation for Oracle RAC.

Hope u will understand my query

Best regards,


Best Regards,                                     &nbsp

g_lee's picture


As Gaurav already pointed out above, Oracle RAC is database software that enables a single database to run across a cluster of servers, whereas Symantec Storage Foundation for Oracle RAC is infrastructure/storage solution that allows for deployment of Oracle RAC.

Perhaps you are asking for the difference between using SFRAC as opposed to Oracle ASM to support an Oracle RAC cluster?

If this is the case, take a look at the following article, under the section "Benefits of CFS" which gives some of the differences/advantages of using CFS (with SFRAC) instead of ASM

Migrating an Oracle RAC database from Automatic Storage Management to Veritas Cluster File System



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catkinso's picture


Below is a list of current functionality which we had the current 11gR2 release. This is meant o be fairly high level but gives you an idea of the value the SFRAC product brings. 

Can I ask what the implementation is around? I only ask because are also a whole bunch of enhacements for DR control with various types of replication control, and/or volume based mirroring.

I hope this sheds some light :) Please let me know if you have any other questions, we have a ton of collateral on this stuff :)


Higher Service Levels (inc. reduced maintenance)

•End-to-end service & resource control  (DB health and its dependant resources are monitoried)
•Instance & resource restart upon instance or resource failure
•Split brain protection (SCSI3 Reservation)
•DMP – Failover Groups, SCSI bypass
•Protects OCR & Interconnects
•Online Storage operations (Centrally Managed)
•Online DB Recovery from Checkpoint

Lower Storage Costs

•Storage tiering (Block&File/Table level, Local SSD& Array)
•Thin reclamation API (Low impact reclemation)
•Multi-pathing Included
•Deduplication & Compression (2011)

Better Consolidation (Improve Instance Stacking)

•Dynamic file system buffer cache (CODM Due Jun 11)
•Lessens load on SGA
•SGA capacity preserved

Higher Performance

•CODM improves up to 30% (Jun 11)
•Enable  auto spare capacity
•DMP (highest industry performance & recovery)
•Avoid excessive  backup workloads via off host processing
•Low impact thin reclamation

 Faster Provisioning to Backup/ETL/Dev

• Space optimised: File system & File snaps
• File based space optimised snaps, created anywhere in the File system
• Accessible from other nodes via underlying Cluster File System