Avoiding long full synchronization during initial creation of the synchronous replica
- Maintenance
- May 13, 2015
- Download as PDF
Description
This article describes how to avoid long full synchronization when creating a synchronous high-availability (HA) replica in StarWind Virtual SAN. It explains why starting with a small HA device is recommended and how to extend the device after initial synchronization to reach the required size without waiting for a full synchronization.
Resolution
Whatever the size of planned HA image, initial HA size should be as small as possible. 10-100GB HA size might be a great choice for 1-10Gb/s NICs as it gives a chance to measure synchronization speed and ensure that HA is performing as it should.
And now the trick is: when HA is synced in StarWind Management Console right-click on the device that should be extended to the desired size and choose Extend Size of HA (High availability) Device.
Then specify disk space that should be added and click “Finish” button. Long full sync is avoided and huge HA device is created.
Conclusion
Creating a small HA device first and extending it after synchronization helps minimize deployment time and prevents unnecessary initial full synchronization when building large HA devices.
