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September 13th, 2016 05:00
RPA WAN Subnet
Hi,
I have noticed that for RPA, it is a requirement that all WAN interfaces in a cluster must reside on the same subnet. If customer has two WAN links, how should we get around this issue since I cannot have RPA1 on A subnet and RPA2 on B subnet.
I have some consistency group with very short protection windows (5 days is the requirements). We have been increasing journal size to 50% of the total volume. Is there thing we can do other than increase the journal lun size?
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Idan
675 Posts
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September 13th, 2016 05:00
Hi there,
Yes, the WAN interfaces of all RPAs of the same cluster must be on the same subnet (or broadcast domain). The underlying WAN links should be transparent to RP or in other words, let's say the WAN subnet of the other cluster is a different one then when going through the GW, the network infrastructure should be able to route it (or load balance it, depends on the solution being used) to the appropriate underlying line.
As for your second question, if there's an increase in workload and/or required protection window then there won't be a choice other than increasing the journal capacity on the replica in order to achieve longer protection window. This can be done non-disruptively. There's also the option to enable snapshot consolidation and increase protection window at the expense of granularity (configurable to daily, weekly, monthly snaps) ...
Hope that helps,
Idan Kentor
RecoverPoint Corporate Systems Engineering
wanaka
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September 14th, 2016 20:00
Thanks for the reply. May I know what kind of WAN solution will be able to perform this kind of load balancing? I want to have some basic idea of it.