We are evaluating Data Domain Virtual Edition, and after setting up a few DD Boost storage units on the VM, Veeam always winds up setting the maximum concurrent tasks for each repository to 45. This is a lot higher than the usual 4 or 8 we use for standard storage devices.
Is this 45 task limit reasonable in general for DD Boost, and reasonable when using multiple storage units on the same DD appliance? We went with multiple storage units so we can get better visibility into dedupe ratios and disk space usage. My hunch is that we should have 45 tasks for the entire appliance and divide (not necessarily evenly) this among the number of storage units -- but the starting point of 45 itself seems a little weird.
FWIW on a per-job basis, we are using incrementals with weekly active fulls, Optimal compression, and Local target 16TB+ or storage optimization.