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SebastiaanT
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Move ReFS based repo and keep fast clone benefit

Post by SebastiaanT » Mar 27, 2017 9:25 am

So I have a ReFS volume formated with 4k that has 77.6TB of data but with block cloning is only 9.5TB on disk.
I created a new disk with 64k blocks as recommended by veeam and want to move the data. How can I copy this data without needing to copy that 77.6TB of data and keeping the space savings from the block cloning?

v.Eremin
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Re: Move ReFS based repo and keep fast clone benefit

Post by v.Eremin » Mar 27, 2017 11:43 am

Saving coming from block cloning cannot be migrated from one volume to the other. You can point a job to the new 64K volume, wait till required retention is reached, and delete obsolete points present on the 4K volume. After that, convert the old volume to 64K as well. Thanks.

SebastiaanT
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Re: Move ReFS based repo and keep fast clone benefit

Post by SebastiaanT » Mar 27, 2017 12:44 pm

Then I would have to remove the retention, mapping the backup job to other storage would otherwise require to copy the retention to the new location.
Is this a limitation of ReFS and is it something that will be adressed in the future?

v.Eremin
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Re: Move ReFS based repo and keep fast clone benefit

Post by v.Eremin » Mar 27, 2017 5:22 pm

It's the way the said functionality has been designed by Microsoft. Unfortunately, we don't have any insights regarding them taking this limitation away in foreseeable future.

bubbagump
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[MERGED] Move ReFS based repo and keep fast clone benefit

Post by bubbagump » Mar 27, 2017 6:27 pm

The title says it all. The traditional way to move a repo is simply to copy it to its new location and do a map (https://www.veeam.com/kb1729). However, it seems with the ReFS block/fast clone, the cloning does not carry over and a lot more space is needed on the target. Is there a way to move a repo between ReFS volumes and carry over the cloning? Google has been worthless thus far.

v.Eremin
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Re: Move ReFS based repo and keep fast clone benefit

Post by v.Eremin » Mar 28, 2017 10:21 am

Currently, there is no way to achieve what you're after. And be aware that the limitation is not imposed by Veeam. Thanks.

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