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1. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
nielse Feb 22, 2013 12:06 AM (in response to Devalreddy)This is taken from the documentation:
More information: http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.vm_admin.doc_50%2FGUID-4C0F4D73-82F2-4B81-8AA7-1DD752A8A5AC.html
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2. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
virtualtech_world Dec 24, 2016 1:03 AM (in response to Devalreddy)Hi - I guess by now you understand the basic definitions of these different Virtual Disk Provisioning Policies through articles like vSphere Documentation Center
However, would suggest you to check this Eager thick vs Lazy thick disk performance | Rickard Nobel to understand these disk provisioning policies in detail that would probably help you more.
Regards.
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3. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
aquila72 May 27, 2017 3:29 AM (in response to nielse)On what occasions do you use one rather than the other?
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4. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
TomHowarth May 27, 2017 6:29 AM (in response to aquila72)you would provision eager zero'd when you need fast write performance. perhaps for a DB or an Exchange DAG. personally I have not used them all that much as the time laying them out is quite long and it is very intensive on your Shared storage.
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5. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
Altenburger Jul 10, 2019 12:33 AM (in response to virtualtech_world)Hi - I guess by now you understand the basic definitions of these different Virtual Disk Provisioning Policies through articles like vSphere Documentation Center
However, would suggest you to check this Eager thick vs Lazy thick disk performance | Rickard Nobel to understand these essay agency disk provisioning policies in detail that would probably help you more.
Thanks for sharing the comparison guide. Is it possible to check where the log was located for activity on changes from the example from lazy to eager zero? Any experience with the log entries and disk type changes dependence?
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6. Re: What Is The Difference Between Eager Zero And Lazy Zero Thick Provision Disks?
AlessandroRomeo68 Aug 8, 2019 7:05 AM (in response to Devalreddy)Hi,
Thin provision: is when the disk is created but the size of the disk is equal to the size of the content. Lower write performance.
Thick provision lazy zeroed: the disk created has the same size as the storage on the storage, but the blocks inside are initialized immediately before being written. Average performance.
Thick provision eager zeroed: the disk has the same dimensions as the ones that are set but the blocks inside are cleared at the time of creation, so the performance will be better.
Alessandro Romeo