RE: Multiple DBs on One RAC - Adding New Nodes and Different Storage
- From: "Patterson, Joel" <jpatterson@xxxxxxxxxx>
- To: "steve.harville@xxxxxxxxx" <steve.harville@xxxxxxxxx>
- Date: Thu, 2 Jan 2014 12:06:26 -0500
Not sure if the 'app' is just software or also database data files.
The Compellent has its own architecture... (maybe you have a different one)
that moves blocks around dynamically depending on an algorithm - unless you pin
them ahead of time, (you can pin after, but they might not migrate back as per
algorithm). The blocks move from tier 1 fast, through other tiers perhaps to
like tier 3, slow cheap disks.
In the case of Database datafiles, the data that is accessed least will be
migrated to the slow cheap disks... this has a big impact on Backups and say
year end / month end reporting since both scenarios will access perhaps the
majority of data off of the slow disks. The impact is noticeable.
Joel Patterson
Database Administrator
904 928-2790
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Steve Harville
Sent: Friday, December 27, 2013 3:54 PM
Cc: oracle-l mailing list
Subject: Re: Multiple DBs on One RAC - Adding New Nodes and Different Storage
If you plan to migrate the current databases from EMC to Compellent, the
easiest way is to have both storage arrays represented as ASM disks, add the
Compellent disks to the existing disk groups, then drop the EMC disks.
Steve Harville<https://apex.appshosting.com/pls/apex/f?p=1076:steveharville>
On Thu, Dec 26, 2013 at 3:51 PM, David Barbour
<david.barbour1@xxxxxxxxx<mailto:david.barbour1@xxxxxxxxx>> wrote:
The VMAX lease is coming due and 'something' is going to change. Meanwhile,
we've purchased Compellent and the dictate is the new application WILL be on
Compellent.
--
Joel Patterson
Sr. Database Administrator | Enterprise Integration
Phone: 904-928-2790 | Fax: 904-733-4916
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