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NVMe Write Consistency in Synchronous Replication
Posted: Mon Mar 30, 2026 8:05 am
by Docketook98
How does StarWind handle write-order consistency and cache coherency when using NVMe-backed storage with high IOPS under synchronous replication across nodes?
Re: NVMe Write Consistency in Synchronous Replication
Posted: Mon Mar 30, 2026 12:35 pm
by yaroslav (staff)
The "master" or "primary" node handles i/o. The i/o is being replicated to the "listener".
I am not sure that you can create a HA device with the cache. VSAN considers data "written" once it hits the underlying storage. If the underlying storage array is cache-backed, software does not take it into account; data integrity then is more on the hardware side.