can you test copy the VM when off to the NAS, does it fail?

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Test with Jumbo Frames enabled.
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Jumbo frames enabled on the VM or on the NAS?
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Jumbo frames enabled on the VM or on the NAS?

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ESXi, network and NAS, failing at 50-60% would indicate a copy operation failure to NAS.
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ESXi, network and NAS, failing at 50-60% would indicate a copy operation failure to NAS.

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enable jumbo frames, test your NAS can handle the copy, change the datastore name to local datastore to eliminate network copy issue.
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enable jumbo frames, test your NAS can handle the copy, change the datastore name to local datastore to eliminate network copy issue.

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What do you mean by changing the data store name to local data store? &nbsp;The NAS is already configured as a datastore on Esxi.
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What do you mean by changing the data store name to local data store?  The NAS is already configured as a datastore on Esxi.

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use a local datastore for the backup, and test
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use a local datastore for the backup, and test

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Backup to local data store was successful...I enabled Jumbo frames (4000) on the NAS, but it still failed.
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Backup to local data store was successful...I enabled Jumbo frames (4000) on the NAS, but it still failed.

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so the issue lies with your NAS datastore, or network connection connection between ESXi server and NAS, or write speed of NAS. GhettoVCB scripts are working successfully.<br />
<br />
Jumbo Frames are usually 9000 mtu, and must be enabled on NAS, network switches and ESXi server.
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so the issue lies with your NAS datastore, or network connection connection between ESXi server and NAS, or write speed of NAS. GhettoVCB scripts are working successfully.

Jumbo Frames are usually 9000 mtu, and must be enabled on NAS, network switches and ESXi server.

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The switch is not a managed switch, so I probably won't be able to enable jumbo frames on the switch. &nbsp;Do you think a USB attached drive would eliminate some of these issues?
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The switch is not a managed switch, so I probably won't be able to enable jumbo frames on the switch.  Do you think a USB attached drive would eliminate some of these issues?

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USB could possible solve this issue, although slow in our experience.<br />
<br />
a dumb switch is unlikely to handle jumbo frames.
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USB could possible solve this issue, although slow in our experience.

a dumb switch is unlikely to handle jumbo frames.

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<div class="content wysiwyg-content">
Hello,<br />
<br />
I just setup GhettoVCB to backup our 2 VM's to a Synology Diskstation NAS using NFS. &nbsp;The backup kicks off fine, and usually fails around 50-60% then goes to the next VM, and does the same thing. &nbsp;I'm testing this at night when no other backups are ran and no users are in the office. &nbsp;I've read that you can modify the NFS settings on the NAS to help, but I do not see any advanced settings on this NAS, just enable.
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Hello,

I just setup GhettoVCB to backup our 2 VM's to a Synology Diskstation NAS using NFS.  The backup kicks off fine, and usually fails around 50-60% then goes to the next VM, and does the same thing.  I'm testing this at night when no other backups are ran and no users are in the office.  I've read that you can modify the NFS settings on the NAS to help, but I do not see any advanced settings on this NAS, just enable.

GhettoVCB: unable to backup due to error in vmdk backup

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.