VolSync Performance:

Just using VolSync let’s benchmark a large number of volumes from OpenShift  Cluster A to OpenShift Cluster B using minio s3

• VolSync speed to sync from A to B  is the minimum required time for OADP datamover. OADP will create additional overhead and time. 
• Note the conversation with PM and John Strunk here

John Strunk, Yesterday 2:02 PM
In theory, I'd expect VolSync to be able to handle it, but we've never tried anything at this scale... I don't have the resources to try it. It should parallelize well, so if they have enough resources in their cluster (CPU, memory, network, storage), it should just work.
 
I don't really know how to size it though w/o just trying it 
 

• Given requirements like ( not exact ) in Performance Criteria Specification
  • What is the time required to sync 10 volumes
  • What is the time required to sync 100 volumes
  • If possible, fine if it isn’t, 600 volumes. 

• Pranav’s volsync perf doc
• Does OAPD offer a choice between rclone and restic or just restic.
  • NOPE.. just restic

Performance Criteria Specification

ocp site A to ocp site B on minio (S3) 
PVs will be using a mix of CephFS and CephRBD
Average, min, max size of the representative PV’s
min = 100Mi, max = 500Gi, average = 5.56 GB
Type of data ( how much does this matter for perf? )
    *⅔ file, ⅓ block*
Network: 10GB

VolSync Kick off Doc:

https://docs.google.com/document/d/1Z6J7xIqbMFTUFoq4uoochyDjfn70luspwAEwBpgMsxA/edit?hl=en&forcehl=1