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Try replace the E1000 network interface with the VMXNET3 interface (make sure VMware Tools installed to support this interface)<br />
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also what datastore supports the VMs ?<br />
<br />
SATA, SAS, 7.2k, 10k, 15k disks, RAID type ?
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Try replace the E1000 network interface with the VMXNET3 interface (make sure VMware Tools installed to support this interface)

also what datastore supports the VMs ?

SATA, SAS, 7.2k, 10k, 15k disks, RAID type ?

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How about copying the files from VM to host and then from host to another VM? It would be really slow to copy files between VMS.
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How about copying the files from VM to host and then from host to another VM? It would be really slow to copy files between VMS.

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I have a problem with my VMS .THEY ALL RUN ON ESXI 5.5 &nbsp;.when I copy files between VMs it is very slow not more than 10mb but if i copy the same files between vm and physical it reach 87mb .<br />
I tryed to copy between to VMs they are in the same vswitch and sharing the same port group but I still get the same slow speed.both network configured with E1000.all VMs run windows servers (2003,2008,2016)
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I have a problem with my VMS .THEY ALL RUN ON ESXI 5.5  .when I copy files between VMs it is very slow not more than 10mb but if i copy the same files between vm and physical it reach 87mb .
I tryed to copy between to VMs they are in the same vswitch and sharing the same port group but I still get the same slow speed.both network configured with E1000.all VMs run windows servers (2003,2008,2016)

Copy jobs between my VMs run very slow esxi 5.5

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

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

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.