Thin Provisioning explained through video on EMC Storage
What about Thin provisionning?
Thin provisioning, new feature in vSphere 4 is great, but it’s not well know to the public and some admins, who do not use virtualization on daily basis or thinking to go virtual, do not know what’s all about. Thin provisioning can greatly FREE up to 70% of storage in Virtual Infrastructure.
For example your VMDK files are no longer 50Gigs on the SAN if the OS of the Virtual Machine needs only 20 gigs. The VM “beleives” that it’s C drive has 50Gigs, right? But in reality the size of the VMDK file on the SAN (or NAS) is only 20 Gigs. You got it?
If you don’t have virtual infrastructure, just use VMware Workstation as platform to test this feature. Thin provisionning is present in VMware Workstation since few years. Now in vSphere 4 you’ll have the chances to do a serious economies of disk space too.
See the video below. It goes fast, don’t hesitate to pause or return back..
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