| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> RE: OFA and Shared Storage
Greg,
I agree that OFA is a great concept for basing your standards on. At least DBA's who manage several servers can find stuff without spending time querying the database to find stuff.
But I worry less and less about spreading and balancing files across disk systems.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Monday, September 22, 2003 3:00 PM
To: Multiple recipients of list ORACLE-L
we use a single/double file system.. The LUN is made up of multiple physical disks, striped/mirrored across the multiple spindles based on the storage requirements.
The disk technology has come a long way. Plus there have been several bench marks/white papers similar to this topic...
But we still use the OFA file structure to maintain the consistency across
the many systems and databases...
greg
-----Original Message-----
<mailto:NDATFM_at_labor.state.ny.us> ]
Sent: Monday, September 22, 2003 2:45 PM
To: Multiple recipients of list ORACLE-L
In my opinion, SAN storage begs the question about whether OFA makes sense anymore. If you can configurte the SAN storage so that all files are striped across all disk, then everything is spread. And if the SAN is mirrored, then just why are we working so hard?
EMC SAN disk has such an incredible uptime, that worrying about losing things like control files are (almost) a thing of the past.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Monday, September 22, 2003 2:05 PM
To: Multiple recipients of list ORACLE-L
I read some posts on here with shared storage such as SAN and Network Appliances its no longer necessary to multiplex datafiles on different disks, since the storage array handles that for you.
How do you ensure that control files and redo log files are kept safely apart so that no one disk failure in the shared storage can take them all out?
According to the OFA(well the abbreviated version I have in front of me) 4-5
disks is optimal for multiplexing. Does this no longer apply with shared storage? How do you ensure database available with shared storage? if your not multiplexing datafiles?
I may have read some peoples posts incorrectly. Im just digging into backup and recovery.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
<http://www.orafaq.net>
--
Author: <rgaffuri_at_cox.net
INET: rgaffuri_at_cox.net
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
<http://www.fatcity.com>
San Diego, California -- Mailing list and web hosting services
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
<http://www.fatcity.com>
San Diego, California -- Mailing list and web hosting services
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Mercadante, Thomas F
INET: NDATFM_at_labor.state.ny.us
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services ---------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Mon Sep 22 2003 - 14:14:45 CDT
 |
 |