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zik
Enthusiast
Enthusiast

Very poor network performance when cloning

I am cloning a 30GB VM from a SAN volume to NFS. After 45 minutes, the clone is 35% complete. Esxtop shows that host is transmitting about 30Mb/s over a 1000Mb/s network.

esxcfg-nics shows 1000Mbps and full duplex.

The SAN and the NetApp are both idle.

Starting a second clone does not change the network load.

Why can I not saturate a 1Gb NIC?

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zik
Enthusiast
Enthusiast

Additional information:

SAN -> SAN 260Mb

SAN -> iSCSI 400Mb

SAN -> NFS 40Mb

NFS -> NFS 40Mb

NFS -> NFS 800Mb (using several 'cp's on the service console)

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