cruxrealm at aol
Apr 11, 2012, 7:47 PM
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Re: VSC 4 and online alignment - anyone used it in anger?
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I suggest do it by batches and run in on quiet times. Also make sure you have ample space for VM snapshots.
Sent from my iPad
On Apr 11, 2012, at 7:26 PM, Peta Thames <petathames [at] gmail> wrote:
> Hi all,
>
> I've been testing the new functionality in VSC 4 around online
> re-alignment. I've done some tests with a test datastore and test VM
> under load, all fine.
>
> However I have an estate of over 200 datastores. Has anyone run the
> scan manager across all their datastores at once? Was there any
> noticeable impact to the VMs? As far as I can tell, I can only
> schedule the scan to scan everything at once. I know I could manually
> do batches but I need to run the scans overnight.
>
> I've found documentation around the actual online alignment function
> and warnings to not do too many at once, but nothing about the scan.
> There also seems to be no way of stopping the scan once it starts,
> which makes my rollback plan in my CR for this scan a bit empty
> looking and hard to justify.
>
> And a long shot, just out of curiosity, if anyone has any information
> on what the scan actually does would be interesting too. I can see it
> takes a VM snapshot for each VM in the datastore, then deletes it, but
> that's it. I've searched NOW high and low, but documentation on VSC 4
> is pretty thin on the ground.
>
> Thanks,
> Peta
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