Is fileCopyBased initialSyncMethod supports in Percona Server for MongoDB 8?

MongoDB Percona Server for MongoDB
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I have had a difficult time figuring out if fileCopyBased initialSyncMethod is supported in Percona Server for MongoDB. I know this is feature specific to MongoDB Enterprise.

I actually tried enabling this on a secondary node in mongod.conf under “setParameter” but it still shows the initial sync is logical.

Thanks!

2

Percona Server for MongoDB doesn’t YET support File Copy-based initial sync. The first version that will support this init sync is 7.0.22-12 - planned to be released July 27 (next week). We’ll follow supporting it in 8.0 as well - about mid-August 2025. We don’t plan to release it for 6.0 and older.

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Hey that is awesome! Is this expected to increase initial sync efficiency from large databases?

Can you also share a brief high level use case for why someone would use File Copy-based initial sync over logical?

It would be exceptionally helpful if a File Copy-based configured secondary was able to initially sync from a very large live primary while giving the ability to decrease initial sync time.

Thanks!

4

Hope my blog post shares some more light:

Looking forward to your feedback and maybe performance gains you got!

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If I understood it correctly the FCBIS is available only in Pro build.
I can’t just use image: percona/percona-server-mongodb:7.0.22-12 in my CR.yaml and expect it to use FCBIS. Am I right?

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You’re right. But I have good news to you. Starting from the next release of PSMDB - 7.0.26-14 will contain all features including FCBIS. This will be available within the next two weeks. Observe our release notes page for 7.0 :slight_smile:

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@radoslaw.szulgo that’s a great news. Thanks a lot. :heart_eyes: