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So I create go from 125gb to 225gb by adding 100gb?
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So I create go from 125gb to 225gb by adding 100gb?

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Correct, check space on datastore, and also check your VMFS blocksize can support the size of the vmdk.
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Correct, check space on datastore, and also check your VMFS blocksize can support the size of the vmdk.

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I have a exch2010 server on server 2008R2 that is a VM using EXS 4.1. The E drives holds the mailbox and publice folder database and its is 125GB. I want to 100GB. Can I do this while the VM is on and in use?
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I have a exch2010 server on server 2008R2 that is a VM using EXS 4.1. The E drives holds the mailbox and publice folder database and its is 125GB. I want to 100GB. Can I do this while the VM is on and in use?

extend current hard drive on vm.

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.