I few days ago, I saw the working space area available on the new calculator, it is great to have it!
My question is regarding on how to use the working space, I’m asking that, because in the VMCA class v11 we use to get the biggest working space form the workloads that were used. the design template has a special raw to fill that information, here is an exerpt from the doc ”Veeam Backup & Replication v11: Architecture and Design”
Now, the new doc. v12 the working space is not there anymore, so my question is, should I still using the largest work space or should I consider the sun all of them?
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I would go by what the calculator says as they take in to account everything you input to calculate this. Working space is usually the sum I believe not the largest as it would depend how many jobs are running and using the same repository.
I would go by what the calculator says as they take in to account everything you input to calculate this. Working space is usually the sum I believe not the largest as it would depend how many jobs are running and using the same repository.
Hi @Chris.Childerhose , I think that if we consider the sum of all loads, we may have some stranded capacity. I believe that depending how big the stranded capacity is, it will not be a big problem, but in some cases, it may become a problem. The colateral effects that I see in considering a very large stranded capacity are: a) the type of hardware to be used may have to be much larger than necessary, increasing the cost of the project. b) we will give room for the competition to create some kind of FUD during a negotiation phase with the customer. I searched on BP and found the excerpt below, but in this excerpt that talks about calculating the Repo, it does not mention whether or not we should consider the sum of all workloads or the largest workload found to be used as working space (as we use to have this inforamtion for VMCA v11 class).
Assuming we have the sum of all workloads for an environment with 5 types of workloads 1PB the front end ea, we would have a total of 500TB destined for working space, on the other hand, if we consider the largest of them, we would have 100TB
here is the size of the Working Space are. for 1PB FE, 20% YoY Growth, 3y forecast to get the working space size.
Thank you Chris!!!
Hi Andre. Workspace is a bit more involved. It’s a sliding scale in calculations, not simply the largest nor the sum. The sliding scale is to account for both larger and smaller scale of environment. The VMCA course and the BP site both attempt to simplify this math as it isn’t trivial, but in the calculator, we have the advantage of doing the full math...
The “buckets” in the scale are:
<10TB = 1.05x
<20TB = 0.66x
<100TB = 0.4x
<500TB = 0.25x
>500TB = 0.1x
Think of these values in the way progressive income tax scales work (but in reverse direction of rates, i supposed ):
e.g. 15TB @ 50% compression: First 10TB is “taxed” at 1.05x, the next 5TB are “taxed” at 0.66x
= (10TB x 1.05 x 50% = 5.25TB) + (5TB x 0.66 x 50% = 1.65TB) = 5.25TB+1.65TB = 6.9TB
Hi @david.tosoff Thank you very much for clarifying it!!! Now I got a better understanding on it!! curiosity Regards a income tax, here in Brazil we call “the LION” is coming.
Happy to have helped but when someone at Veeam answers even better.
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