Oracle RAC on VM
From: Kevin Lidh <kevin.lidh_at_gmail.com>
Date: Thu, 21 Aug 2014 16:14:39 -0600
Message-ID: <00c701cfbd8d$4d6be9f0$e843bdd0$_at_gmail.com>
As a DBA, I never wanted to work on Oracle on VMware but it seems to be the trend. Now that I'm a manager, I'm looking to propose moving to RAC for HA and also back to physical machines. Since this goes against the strategic direction of our organization, I'm sure I'll be asked why we can't do RAC on VMs. I have my personal opinions about this but I was wondering what the broader audience of experts believe.
Date: Thu, 21 Aug 2014 16:14:39 -0600
Message-ID: <00c701cfbd8d$4d6be9f0$e843bdd0$_at_gmail.com>
As a DBA, I never wanted to work on Oracle on VMware but it seems to be the trend. Now that I'm a manager, I'm looking to propose moving to RAC for HA and also back to physical machines. Since this goes against the strategic direction of our organization, I'm sure I'll be asked why we can't do RAC on VMs. I have my personal opinions about this but I was wondering what the broader audience of experts believe.
Factors I'm considering are:
- Servers closer to the storage for performance. In virtualization, you have an intermediary processing your requests and responses.
- Access to all resources licensed. We keep a certain percentage of our hosts free to handle the load in case one in the cluster fails. With RAC, you have access to all the resources all the time. And since you have to pay for it all anyway, I see that as a good thing.
- Performance in general. I don't have any evidence but I can't believe that another layer between my OS calls and the hardware could be as fast as not having that layer.
Thanks in advance,
Kevin
-- http://www.freelists.org/webpage/oracle-lReceived on Fri Aug 22 2014 - 00:14:39 CEST