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Thanks Ralph, how does something like this happen in the 1st place?
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A snapshot is routinely taken during backup in order to receive a sonsistent backup of all hard drive content: The minute you start a backup, all changes are written 'to the side' and only manifested after the backup finished. &nbsp;That way you get the exact state the disk was in when the backup started.<br />
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Snapshots are deleted after the backup finishes - all changes that were previously written to the side (=into the snapshot) are now written into the true disk and the side note is removed.
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Ralph that doesn't tell me why the disk has 00001 after it &nbsp;though.
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It's the first out of potentially many snapshots.<br />
The disk is called c.vmdk in your example. &nbsp;The first snapshot is c-00001.vmdk. &nbsp;Your c.vmdk remains untouched while the snapshot is active and all changes are written to c-00001.vmdk. &nbsp;So c-00001.vmdk starts out small, and as you work on it it will get bigger up to the size the drive is assigend if each and every block has been changed compared to the disk before the snapshot.<br />
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If another snapshot is created before the first is deleted, it will be called c-000002.vmdk and so on. &nbsp;When a snapshot is deleted, it's changes should be &quot;melted&quot; into the preceding snapshot or the original drive, subsequently the snapshot file will be deleted.<br />
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While a snapshot exists, certain functions are disabled. &nbsp;You cannot, for example, resize a drive.
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Veeam has a clean-up process that should clean this up. &nbsp;If a VM does not have enough quiet time it may have issues deleting a snapshot, using less threads on a proxy may resolve the issue.
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You may want to read my EE Article, if you do not know what snapshots are....<br />
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<a href="https://www.experts-exchange.com/Software/VMWare/A_10300.html" rel="ugc">HOW TO: VMware Snapshots :- Be Patient</a>
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Paulsolov, would u happen to have the process to clean it up. <br />
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Also is there a risk of running things as they are now?
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andrew, following your steps, it should remove snapshots and i should &nbsp;be OK right?
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Correct, but check the folder, and also the disk, see my EE Article, to check it's still not running on a snapshot.
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Thanks Andrew..i will try this, while this is occuring, is the VM inaccessible?
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The VM is still available if powered on, but performance is likely to be even worse! So be warned, and Advise End Users etc
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Sounds good, running this weekend.
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Was there closure with this question?
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do you require any additional help to close this question?
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hi guys,<br />
<br />
i have a VM with the c: drive that shows c_00001 on it, which i believe is running on a snapshot. How do i fix this? It seems when my backups run at night using veeam this VM goes offline for a few minutes. This is vmware esx 5.1
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hi guys,

i have a VM with the c: drive that shows c_00001 on it, which i believe is running on a snapshot. How do i fix this? It seems when my backups run at night using veeam this VM goes offline for a few minutes. This is vmware esx 5.1

vmware disk on snapshot

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.

Virtualization

Veeam® has pioneered a new market of Availability for the Always-On Enterprise™ by helping organizations meet recovery time and point objectives (RTPO™) of less than 15 minutes for all applications and data. Veeam develops backup, disaster recovery and virtualization management software for VMware and Hyper-V virtual environments. The company focuses on products that help with virtualized workloads, reduce downtime, and ensure the system Availability required by service-level agreements.