Greetings,
I started using StarWind Tape Redirector to get my Quantum Scalar i40 fibrechannel tape library (LTO6 drive) attached to my Windows Server 2012R2 based Veeam VM running in a Hyper-V Cluster (2012R2 Hosts). The VM is connected to a gigabit network port and can put the gigabit through to the Tape Redirector host and other devices in the network. Using HPE Library and Tape tools on the physically attached redirection host I get 170 megabytes per second to the tape, on my virtual machine the speed is somewhere between 30-37 megabytes. Tape Redirector is attached with the iSCSI initiator and i already tried setting the MaxTransferLength regkey to 64KB (rebooted of course) with no positive effect and tried enabling Jumbo Frames (9k) on my virtual network adapter, also no real benefit. The physical network port does nothing besides being there for the Veeam machine and the VM had no other traffic during tests, so the load on the vNIC is around 38 megabytes also.
I've read through most other speed issue threads and I can live with this problem for now, using Veeam "forces" me into the d2d2t scenario anyways, but you might have another tip for me? I might try using a 10gbit port, but my hopes that something changes are low.
Since the problem couldn't be solved for most other people on this forum, where does it stem from? Is it something that might be fixed in future releases?
That being said, thanks for providing us with your pretty easy to use tool for free, it's heaven send, even with the speed issues.
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