RE: EMC Snapshot Technology

[Grabowy, Chris]

Hey Tom,   I'm in the same boat.   Have you looked over some of the red papers at www.storage.ibm.com/ess???   If not, check this one out...   Storage Management for SAP and Oracle8i on SUN SOLARIS Split Mirror Backup/Recovery with IBM's ESS.   Granted its for Solaris, but I would think the concepts are the same.  And of course, there are more about Oracle.   I believe were running RAID 5, which has me a bit concerned being a unofficial member of the BAARF organization.  The red papers speak to this problem, and supposedly it has been resolved.  Something about the entire stripe being cached.  Since I'm a SAN newbie, I'm starting with the Introduction to SAN paper, and reading my way up.  I don't want to raise a red flag until I can prove it.   Please keep me in mind with whatever path you take.  And if you present your findings let me know, I would love to read'em.   Thanks.   Chris -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Mercadante, Thomas F Sent: Thursday, October 09, 2003 9:10 AM To: Multiple recipients of list ORACLE-L Subject: RE: EMC Snapshot Technology Gene,   What happens when you need to perform a recovery from the Flashcopy backup?  Is Flashcopy done while the database is open or closed? If the database is open, then I assume that you would need to perform an incomplete recovery? Just curious.  I am in the middle of setting up new IBM/AIX boxes, and we will using either EMC or IBM Shark disk.  Flashcopy was mentioned as a possible solution for backups.  But I don't like being boxed in to performing an incomplete recovery.   Tom Mercadante Oracle Certified Professional -----Original Message----- From: Gene Sais [mailto:[EMAIL PROTECTED] Sent: Thursday, October 09, 2003 8:35 AM To: Multiple recipients of list ORACLE-L Subject: Re: EMC Snapshot Technology I don't use snapshots, but have used EMC BCV's in the past and now use IBM's Flashcopy for backups.  I backup 1TB db in ~20 mins using Flashcopy.  Then I take it off to tape, i.e. filesystems monted on a TSM Backup server, hence no resources needed from the production server :). hth, Gene >>> [EMAIL PROTECTED] 10/08/03 09:39PM >>> We are implementing Oracle RAC on two Windows nodes, connected to an EMC SAN. We'll also have a failover sight. We are using S.A.M.E. disk configuration, with only one logical volume, and backups/archivelogs dumping to another volume. The SAN is an EMC Clariion CX400. I immediately vetoed snapshots, opting for RMAN, but I'm now taking a second look. Does anyone use the snapshot technology as a solution for full backups? Thanks, Jeff -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: jwiegand   INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).