BradleyUC
1 Copper

bare-metal restore (p2v) performance tuning

I'd like to use BMR (p2v), and am wondering what the performance limitations are.  I've read several helpful guides/rules-of-thumb on reasonable performance for client-to-grid, and grid-to-grid (per node), but have seen very little about BMR performance, what impacts it, and how to maximize it.

My first thought is that target (recovery host) disk I/O would very quickly become the limitation; but that restore data transfer rates would be much higher than backup operations, even with 5+ grid nodes.  If that's accurate, that would raise a second question of what kind of restore performance is possible with high-speed storage (e.g. pv2 into a VBlock environment).

Bradley

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jdespres
3 Argentium

Re: bare-metal restore (p2v) performance tuning

Make sure plenty of memory is assigned!

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BradleyUC
1 Copper

Re: bare-metal restore (p2v) performance tuning

Thanks, jdesperes.  Do you temporarily bump-up RAM on VMs during BMR, and if so, how much RAM do you find is effective?

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jdespres
3 Argentium

Re: bare-metal restore (p2v) performance tuning

I have seen what happens when you have low ram....  Slow BMR restores...  I have no formula for how much ram.  If you can add more ram temporarily it won't hurt! 

Thanks!

Joe Despres

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