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what is a CFS ?? [message #182908]

Tue, 18 July 2006 12:28

tridentadm
Messages: 142
Registered: March 2006

Senior Member

install can be done of following disk types for RAC

1) Cluster File System (CFS)
2) Shared Raw Devices

but what is a CFS ??

i thought otherwise also the RAC installation requires a Cluster to be in place. ??

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Re: what is a CFS ?? [message #182913 is a reply to message #182908]

Tue, 18 July 2006 12:48

Frank Naude
Messages: 4596
Registered: April 1998

Senior Member

Yes, you most definitely need a working cluster before you can install RAC. However, you can put the database on ASM, raw disks or a cluster filesystem.

Example cluster file systems:

OCFS - http://oss.oracle.com/projects/ocfs/
Sun Cluster's Cluster File System
HP Serviceguard Cluster File System (SG/CFS)
IBM's General Parallel File System (GPFS)
VERITAS Cluster File System (CFS)
Etc.

"Oracle Cluster File System (OCFS) presents a consistent file system image across the servers in a cluster. OCFS allows administrators to take advantage of a files system for the Oracle database files (data files, control files, and archive logs) and configuration files. This eases administration of the Oracle Real Application Clusters."

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Re: what is a CFS ?? [message #182960 is a reply to message #182908]

Tue, 18 July 2006 23:52

tridentadm
Messages: 142
Registered: March 2006

Senior Member

thx. for reply.

i presume OCFS is applicable to 10g only.

also
IBM's General Parallel File System (GPFS) is propritory to IBM (which is the hardware cluster that they use)

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Re: what is a CFS ?? [message #182973 is a reply to message #182960]

Wed, 19 July 2006 00:49

Frank Naude
Messages: 4596
Registered: April 1998

Senior Member

> I presume OCFS is applicable to 10g only.

No, OCFS is just a filesystem. However, it is not available on AIX.

> Also, IBM's General Parallel File System (GPFS) is proprietary to IBM (which is the hardware cluster that they use).

Exactly. You need to use whatever is available on your platform - provided that it is certified for RAC.

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