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 PBR vs GM-CV

Fabio Smolny Kosilek's profile image
Fabio Smolny Kosilek posted Fri October 17, 2025 08:27 PM

I recently switched to using PBR instead of GM-CV for inter-site replication. I've had a few questions:

1. Is it possible to stop replication for just one VG, related to a host, instead of stopping the entire partnership? Some controlled replication stop operations in the current GM-CV are for a single host only.

2. Sometimes it's necessary to increase the cycle mode in GM-CV due to network instability and latency. Does PBR have any similar changes, or is it as replication-sensitive as GM without CV. 

Philip Clark's profile image
Philip Clark posted Thu October 23, 2025 06:26 AM

PBR automatically adjusts cycling to adapt to network instability and latency. You do not have to do anything.

If you want to choose which volume group will go into cycling mode first, you can set a higher RPO target on that VG. The system will still try to maintain lower RPO and stay in journaling mode as long as possible, but if it needs to swap to cycling mode, it will start with the VG with the highest RPO target.

(To stop replicating one VG without stopping the entire partnership - make that recovery copy independent.)

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