What is SnapMirror lag time?
What is SnapMirror lag time?
A SnapMirror or SnapVault relationship’s lag time is calculated using: The time on the destination system. The amount of time needed to transfer the snapshot from source to destination.
How do I check my SnapMirror status on Netapp?
Select the SnapMirror relationship between the source and the destination volumes, and then verify the status in the Details bottom tab. The Details tab displays the health status of the SnapMirror relationship and shows the transfer errors and lag time. The Is Healthy field must display Yes.
How do you troubleshoot SnapMirror?
If you change the name of a SnapMirror destination volume, you need to manually correct the SnapMirror relationships affected by the change. SnapMirror will be unable to replicate source volume data to a newly-named destination volume whose configuration information is incomplete.
How does SnapMirror work in netapp?
As suggested by the name, SnapMirror makes use of Cloud Volumes ONTAP snapshots to manage the transfer of data from one location to another. Initially, a full copy based on a snapshot of the source volume is copied over to the destination to perform a baseline synchronization.
What is SnapMirror resync in netapp?
The snapmirror resync command enables you to reestablish a broken SnapMirror relationship without a lengthy baseline transfer. Resynchronization of FlexVol volumes. If there are any changes on the destination system that you need to replicate to the source, you can use qtree SnapMirror to resynchronize data.
How do I update my SnapMirror?
Use the snapmirror update-ls-set command to update a set of load-sharing mirrors. For extended data protection (XDP) relationships with a snapmirror policy of type async-mirror , a snapmirror update always creates a new Snapshot copy on the source volume.
How does SnapMirror replication work?
As its name implies, SnapMirror creates a replica, or mirror, of your working data in secondary storage from which you can continue to serve data in the event of a catastrophe at the primary site.
What is SnapVault and SnapMirror in NetApp?
SnapMirror is disaster recovery technology, designed for failover from primary storage to secondary storage at a geographically remote site. SnapVault is archiving technology, designed for disk-to-disk Snapshot copy replication for standards compliance and other governance-related purposes.
How do I update my Snapmirror?
What is SnapMirror replication?
SnapMirror unified replication allows you to configure disaster recovery and archiving on the same destination volume. When unified replication is appropriate, it offers benefits in reducing the amount of secondary storage you need, limiting the number of baseline transfers, and decreasing network traffic.
How does NetApp FlexClone work?
A FlexClone volume is a fully functional FlexVol volume similar to its parent. Because a FlexClone volume and its parent share the same disk space for common data, creating a FlexClone volume is instantaneous and requires no additional disk space (until changes are made to the FlexClone volume or its parent).
How can I check the status of SnapMirror?
Select the SnapMirror relationship between the source and the destination volumes, and then verify the status in the Details bottom tab. The Details tab displays the health status of the SnapMirror relationship and shows the transfer errors and lag time. The Is Healthy field must display Yes.
How long should the lag time be for SnapMirror?
The Lag Time must be no more than the transfer schedule interval. For example, if the transfer schedule is hourly, then the lag time must not be more than an hour. You should troubleshoot any issues in the SnapMirror relationships. NetApp Technical Report 4015: SnapMirror Configuration and Best Practices Guide for ONTAP 9.1, 9.2
Is there a data transfer failure in SnapMirror?
For most SnapMirror data transfer failures, the field displays No. In some failure cases, however, the field continues to display Yes. You must check the transfer errors in the Details section to ensure that no data transfer failure occurred. The Relationship State field must display Snapmirrored.
What does the health field on SnapMirror mean?
The Details tab displays the health status of the SnapMirror relationship and shows the transfer errors and lag time. The Is Healthy field must display Yes. For most SnapMirror data transfer failures, the field displays No. In some failure cases, however, the field continues to display Yes.