SQL Server backup performance (We're not using Nimble VSS snapshots)

[julez66]

1. We're using 64K, I think that was Dave who was using 4K.

2. Not sure about the VLF as overall performance was slower for the backup with all databases.

The temporary band-aid was that we are using multiple backup files (which we weren't doing at before, but probably should have been) until we can migrate 100% to 10GbE.  The belief from Nimble support is that we are being bottle-necked by our 1GbE connectivity which is probably exacerbated by the fact that we're not using the maximum number of paths since we're going from 1GbE servers to a 10GbE controller.  Like it's a queue problem or something of that nature.

Unfortunately until we make it to 10GbE end-to-end I don't think we can really say that it fixed it, but it's also my belief that the 1GbE to 10GbE is causing trouble with snapshot duration also.  Personal recommendation and I by no means am a Nimble engineer or anything.  But I think if you have 1GbE servers get a 1GbE controller until you can actually go to 10GbE end to end.  Either that or make sure you have additional NICs to use in your servers to make use of the maximum number of paths supported.