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when do these events occur, at &nbsp;backup time ?
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when do these events occur, at  backup time ?

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yes, right after it kicks off. <br />
<br />
it does complete successfully
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yes, right after it kicks off.

it does complete successfully

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It is &quot;normal&quot; for VMware VMs, and is most likely to be the snapshot function, stunning the VM before and after backup process.<br />
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You can read all the Microsoft KBs about the events, but is unlikely to solve the event noise!
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It is "normal" for VMware VMs, and is most likely to be the snapshot function, stunning the VM before and after backup process.

You can read all the Microsoft KBs about the events, but is unlikely to solve the event noise!

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ok! just wanted to make sure this isn't a sign of things to come. I first checked the LUN these two VMs sat on to make sure the error wasn't on VMs tied to one LUN. Would this be anything to think about in this case? Or is this usually related to being &quot;normal&quot;
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ok! just wanted to make sure this isn't a sign of things to come. I first checked the LUN these two VMs sat on to make sure the error wasn't on VMs tied to one LUN. Would this be anything to think about in this case? Or is this usually related to being "normal"

tbs_mnp

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I have a couple virtual servers throwing the follow event id 15 errors.<br />
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The device, \Device\Harddisk2\DR2, is not ready for access yet.<br />
&nbsp;The device, \...\DR4, is not ready for access yet. <br />
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No issues with the VMs. Curious what this means and how to resolve. Ive seen volumes are missing to the VMs at a OS level think they are connecting to physical storage. not sure at this point.
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I have a couple virtual servers throwing the follow event id 15 errors.

The device, \Device\Harddisk2\DR2, is not ready for access yet.
 The device, \...\DR4, is not ready for access yet. 

No issues with the VMs. Curious what this means and how to resolve. Ive seen volumes are missing to the VMs at a OS level think they are connecting to physical storage. not sure at this point.

Event ID 15 on Virtual Machines with no VM issues

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

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.

Virtualization

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

Operating Systems

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.