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HA solution to replace HP Serviceguard on RHEL

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Hi,

Given an environment running an HP Service Guard Metrocluster on bare metal Linux (RHEL) for Oracle DBs (>=11g). HP SG has a SRDF integration which is leveraged to replicate synchronously between two VMAX across sites and to automate the storage failover.

The future infrastructure shall be a converged solution based on a Vblock. So, one Vblock per DC with a VMAX for the storage layer. The goal is to only use VPLEX for any replication and application HA/DR purpose and to virtualize everything. SRDF is not officially supported with a Vblock anyway.

Which HA/DR solution would you suggest to replace the current HP SG Metrocluster for Oracle? The goal must be to leverage VPLEX and virtualize the Oracle environment while having the same HA level as before? It is important that failover and failback between sites works seamlessly.

HP Serviceguard on RedHat is not listed in the VPLEX support matrix, only in conjunction with HP-UX. Would Oracle RAC be the way to go?

Thanks,

Patrik

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Re: HA solution to replace HP Serviceguard on RHEL

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VMware virtualization will definitely support Oracle RAC, you can refer to 'Oracle databases on VMware RAC deployment Guide' for more detailed steps.  The performance impact will be < 5%, while with EMC Tiered and flash technologies, the performance can improve many times.  You will find out that 'After virtual machines are created and correctly configured, the installation of the guest operating system and Oracle RAC software is the same as with a physical installation.

HP SG is the old style Cluster at OS level protection like Sun Cluster or HACMP. It will take time for recovery (longer RTO), need manually split SRDF LUNs, mount to the standby hosts, etc.  While VPLEX with RAC will provide 0 RTO and active - active (no standby) at application level.

Please feel free to contact our team if you need more specific technical support, or you can reach me with email:

simon.zhao@emc.com

if any confidential customer information involved.

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Re: HA solution to replace HP Serviceguard on RHEL

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Hi Patrick

EMC VPLEX + VMware + Oracle Extended RAC would be the best solution for this case as it will provide customer with much better HA levels than the current HP SG solution. For more detail technical information please refer to the below EMC proven solutions:

Oracle Extended RAC with EMC VPLEX Metro—Best Practices Planning

EMC Mission-Critical Business Continuity for SAP - EMC VPLEX, Symmetrix VMAX, VNX, VMware vSphere HA...

Using VPLEX Metro and RecoverPoint with VMware SRM in an Oracle Extended RAC E-Business Suite Enviro...

As there is so much environment information provided, you need to ensure the distance within 100km and RTT < 5ms (I will assume it is as the current sync for SRDF), and the bandwidth for RPO requirements

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Re: HA solution to replace HP Serviceguard on RHEL

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Hi,

Thanks for your reply. Alright, so the way to go seems Oracle Extended RAC with VPLEX and VMware. However, I thought that Oracle RAC clusters are usually physical installations, not virtualized. Is it supported at all?

Since I don't know HP Serviceguard, would virtualizing Oracle on a streched ESXi cluster provide the same availability? Relying on VMware's HA?

The RTT between the sites is below 5ms.

Thanks.

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Re: HA solution to replace HP Serviceguard on RHEL

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VMware virtualization will definitely support Oracle RAC, you can refer to 'Oracle databases on VMware RAC deployment Guide' for more detailed steps.  The performance impact will be < 5%, while with EMC Tiered and flash technologies, the performance can improve many times.  You will find out that 'After virtual machines are created and correctly configured, the installation of the guest operating system and Oracle RAC software is the same as with a physical installation.

HP SG is the old style Cluster at OS level protection like Sun Cluster or HACMP. It will take time for recovery (longer RTO), need manually split SRDF LUNs, mount to the standby hosts, etc.  While VPLEX with RAC will provide 0 RTO and active - active (no standby) at application level.

Please feel free to contact our team if you need more specific technical support, or you can reach me with email:

simon.zhao@emc.com

if any confidential customer information involved.

View solution in original post

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