Tuesday, June 2, 2015

Demystifying vSphere Replication 6.0

******                 Updated information - Mar 31, 2021           ******
******                   Check new Maximum for VR 68.4            ****** *************************************************************************

As one of my blog's tradition here’s the updated information about vSphere Replication 6.0

Before we dive into the product’s operational limits, let’s see what new cool features have been introduced with VR 6.0

- Compression: now you can compress the data on the source site before send it over to the destination site. (must be on ESXi 6.0);

- Linux quiescing: used to quiesce your Windows boxes to prevent file-level crashing, now the feature is also available for the Linux ones;

- Full replication traffic isolation: with new vmkernel portgroups you can isolate replication traffic from end to end. (I’ll cover that in more details on a future post).

Besides the new features, we also had some enhancements on the scalability.

The maximum number of VRS still 10 (9 VRS + 1 VRMS, yes VRMS is also a replication server)
But the maximum VMs a single VRS can replicate has been increase from 100 to 200.
That means, using the solution at it’s maximum, you can reach a total of 2000 replicated VMs.

The old VR 5.1 and 5.5 Operational Limits KB has not bee updated to reflect the 6.0 enhancements, a new KB2102453 has been created instead.

If you are planning to replicate more than 500 VMs, here’s a few thing to be aware of:
- Adjust event maximum age at /opt/vmware/hms/conf/hms-configuration.xml
- On VRMS upgraded from previsous version the disk size cannot accommodate the internal database size so you need to increase the disk size too (assuming you are not using an external DB)

Check KB2102463 for the procedure.

 Good replication ; )

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I’m an IT specialist with over 15 years of experience, working from IT infrastructure to management products, troubleshooting and project management skills from medium to large environments. Nowadays I'm working for VMware as a Consulting Architect, helping customers to embrace the Cloud Era and make them successfully on their journey. Despite the fact I'm a VMware employee these postings reflect my own opinion and do not represents VMware's position, strategies or opinions. Reach me at @dumeirell

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