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post #21 of 26
Quote:
Originally Posted by dushan24 View Post

Dell EqualLogic SAN's with the new firmware can re-claim de-allocated thin provisioned space :-)

Now that's handy. I've also read that in kernel 3.7, the holes in sparse files can be unallocated while they are not in use. Great for VM disk files. smile.gif
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post #22 of 26
Quote:
Originally Posted by parityboy View Post

Now that's handy. I've also read that in kernel 3.7, the holes in sparse files can be unallocated while they are not in use. Great for VM disk files. smile.gif

Absolutely :-)

We'll be upgrading our 4 SAN's after Christmas.
    
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post #23 of 26
Just out of interest, apart from network-accessible block-level storage via iSCSI or FC, what else do SANs do? Things like block-level de-dupe are a filesystem thing, but what about the SAN itself (network and nodes)?
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post #24 of 26
Quote:
Originally Posted by parityboy View Post

Things like block-level de-dupe are a filesystem thing?

Actually SANs like some NetApps, etc. offload the de-dup onto the SAN controller and take the load off of the disks. (IIRC)
    
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post #25 of 26
So it's an in-memory operation?
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post #26 of 26
Quote:
Originally Posted by parityboy View Post

So it's an in-memory operation?

IIRC the controller just does it. I will look into it more tonight as we have NetApps in our VMWare class/lab.
    
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