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September 23rd, 2015 07:00
Seeding a Target Array - Then setup SyncIQ policy?
Here is scenario
- Data is on another appliance and is to be migrated to Isilon
- Data is already at source and target locations
- Data can be copied/migrated to each Isilon array, meaning we can copy the target data to the target Isilon
Can a Isilon SyncIQ policy be created without copying all the data from the source to the target over a slow WAN link? Only pick up the differences after the migration to the Isilon.
Lemme know.
Thanks,
Dave
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sluetze
2 Intern
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300 Posts
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September 24th, 2015 06:00
Hi Dave,
you are searching for the "--target-compare-initial-sync on" switch for the isi sync policies modify.
afaik the diff-Switch only is usefull if you have big files. small files (lower 128K ?) will be replicated instantly since checksumcalculation and comparisson takes more time, than transferring
Regards
--sluetze
cadiletta
1 Rookie
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106 Posts
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September 24th, 2015 08:00
Dave,
Echoing what sluetze says, yes you can definitely perform a diff sync job to compare the file system and only transfer changed data. Once completed the snapshots will be in place to continue an incremental sync schedule which will perform significantly faster. The initial diff sync will take it's time to complete as it does still make comparisons back and forth between the clusters, but it should ultimately save a good deal of time from having to do a full sync.