I have a query on the deduplication. Sorry if it sounds very stupid. I have enabled dedup on all my vmware volumes and they get snapvauled (using smvi) to the secondary.
Do I need to setup dedup on the secondary volumes as well for the primary vmware vols?
Does the dedup saving of primary volumes get transferred during snapvault replication to the secondary?
Any advise would be greatly apprciated.
The deduplication feature is integrated with the SnapVault secondary license. This feature increases the efficiency of data backup and improves the use of secondary storage.
If deduplication is licensed on the snapvault secondary storage system and enabled on the secondary volume, the deduplication process starts automatically after the completion of a snapvault transfer. When you enable deduplication on a existing snapvault secondary volume, the volume may or may not hold replicas of primary data that have never been deduplicated. After a SV update is completed, the newly transferred SV blocks are deduplicated against all of the blocks in the secondary volume.
The deduplication process begins by reviewing the log of changes. The deduplication of blocks is initiated when the number of changed blocks represents at least 20% of the number of blocks in the volume.
Because dedup synchronizes with SV schedule, you cannot schedule the dedup of a SV secondary volume. However you can start the deduplication process manually by using NetApp system manager or the CLI.
One last query on your point
Because dedup synchronizes with SV schedule, you cannot schedule the dedup of a SV secondary volume. However you can start the deduplication process manually by using NetApp system manager or the CLI. "
Does that mean that if I have dedup configured on the primary vol, I cannnot schedule the dedup of a secondary volume? Please let me know
I will re phrase my question,
If I want to achive opitimal dedup saving on the secondary volume
1. Considering my primary vol is dedup'ed. Is it mandatory or necessary to schedule the SV update after the dedup has run on the primary? Is there any thumb rule like that?
Thanks in advance for your help.
I think the above explanation was very clear, you wont be scheduling snap vault on secondary volume. ALL YOU NEED TO DO IS ENABLE DEDUP IN SECONDARY VOLUME.
node1> sis on /vol/svprimary
node2> sis on /vol/svsecondary
You can view and accept the default dedup schedule on primary and secondary volumes
node1> sis config /vol/svprimary
node2> sis config /vol/svsecondary