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Operating Systems Linux Red Hat Advice on allocating SAN storage to a virtual database server on VMware Post 303027949 by Peasant on Friday 28th of December 2018 12:37:11 PM
Old 12-28-2018
On VMWARE i would recommend using RDM, multiples of, in SAN environments.

Inside the guest, use ASM and minimize filesystem caching via kernel parameters, since you will not need it.
If filesystems are used, go XFS and limit the filesystem caching considering the size of SGA / PGA from Oracle side.
Check out the tuning docs regarding from Oracle side.

In either case, using ASM or XFS with volume manager, be sure to separate REDO, DATA and archive logs do use different RDMs.

On storage side, set new page assignment on REDO LUN to hit the fastest you have.
DATA then comes second disk performance wise, while archive logs can be slowest rust.

Use storage to provide snapshots, cloning and stuff.
One monster lun then datastore then guest database sure sounds like a nightmare from my perspective.

Hope that helps
Regards
Peasant.
 

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PMDAVMWARE(1)						       Performance Co-Pilot						     PMDAVMWARE(1)

NAME
pmdavmware - VMware performance metrics domain agent (PMDA) DESCRIPTION
pmdavmware is a Performance Metrics Domain Agent (PMDA) which exports metric values from a (possibly remote) VMware virtualisation host. This implementation uses the VMare Perl API (refer to the online docs at http://www.vmware.com/support/developer/viperltoolkit). VIPerl is a prerequisite for this PMDA, it needs to be installed and configured before attempting to use this agent. It is highly recommended that you test your VIPerl installation using the demo programs that are shipped with VIPerl, before attempting to use this PMDA. INSTALLATION
In order to access performance data using the VIPerl API, it is necessary to be able to login to the metrics source. Hence, a valid VMware server name, user name and pass word are needed by the PMDA. These can be passed in on the command line (via the pmcd.conf file) or via a vmware.conf file in the PMDA directory. # cd $PCP_PMDAS_DIR/vmware # [ edit vmware.conf ] This file should contain three lines, such as: $server = 'vm.server.net'; $username = 'XXXX'; $password = 'YYYY'; Once this is setup, you can access the names and values for the vmware performance metrics by doing the following as root: # cd $PCP_PMDAS_DIR/vmware # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/vmware # ./Remove pmdavmware is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. FILES
$PCP_PMDAS_DIR/vmware/vmware.conf configuration file for the pmdavmware agent $PCP_PMDAS_DIR/vmware/Install installation script for the pmdavmware agent $PCP_PMDAS_DIR/vmware/Remove undo installation script for the pmdavmware agent $PCP_LOG_DIR/pmcd/vmware.log default log file for error messages from pmdavmware SEE ALSO
pmcd(1). 3.8.10 Performance Co-Pilot PMDAVMWARE(1)
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