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Variable rate synchronization
In Configuring with fixed-bandwidth synchronization is problematic for configurations where multiple resources share a replication/sync network, fixed-bandwidth synchronization is not optimalsynchronization network. Because they the resources share the same replication network, if the sync synchronization rate is occupied for a particular replication resource channel, the other resources are not guaranteed a fixed sync synchronization rate. In this case, you can mitigate sync-rate occupancy by configuring variable - bandwidth synchronization can be configured to dynamically adjust the sync-synchronization rate for of each replication channel . In this mode, BSR to proactively adjust the synchronization band in response to other resources taking over. Variable-band synchronization determines an initial sync-synchronization rate (by resync-rate) and then continuously adjusts the sync-rate through uses an automatic control -loop algorithmalgorithm to continuously adjust the synchronization rate. This algorithm ensures that the synchronization band is available from c-min-rate to c-max-rate while still allowing replication is operating to operate on the front end. Setting c-max-rate too high will affect the replication band, so it is recommended preferable to set it to match the network band.
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c-min-rate guarantees a minimum synchronization rate of a specified size, regardless of whether you have a fixed-bandwidth or variable-bandwidth setting. |
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Difference between BSR and DRBD when handling replication and synchronization at the same time
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Synchronization speed estimation You can estimate the synchronization time with the following formula. tresync = D/R
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