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storage spaces expand vdisk with one disk

Hi.
I am running Storage Spaces "parity" on my server 2012R2 with 9x 2TB hard drives.

Now i need more Space and i have added one more disk and added it to the Storage Pool.
Now i want to Extend my Virtual Disk, but that opportunity is greyed out.

I've have read on the net that i need to add the same number of discs as i allready have in the Storage Pool to expand the Vdisk.

But i need the opportunity to just add one disk at the time as it is nessary.

Any help is appreciated
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Montesdatasystemer
Asked:
Montesdatasystemer
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1 Solution
 
Cliff GaliherCommented:
That is a decision you have to make when you create the storage space
(not the pool.) Once created, it cannot be changed. Your only choice now would be to back up the data on the space, delete the space, and recreate it. And with parity, when all the disks are the same size, it is almost impossible to add a single drive because it needs access to *at least* a second drive to write the parity data. Spaces does not rebalance and redistribute already written data to accomodate this scenario. For such environments, mirroring is a better choice.
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MontesdatasystemerAuthor Commented:
Okay. as i understand on what you are writing this isnt possible to expand with only one disk in Parity.
If i choose Mirror is it possible then to expand with one disk at the time?

Thanks
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Cliff GaliherCommented:
The only guaranteed way to expand by one disk at a time is to create a simple space with a column size of 1. Any other configuration has the potential to require multiple disks.
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MontesdatasystemerAuthor Commented:
Thanks for your answer.

And if i choose Simple Space i will have no security as in a raid am i right?
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Cliff GaliherCommented:
Correct.
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