Seagate Expander disconnects after a few hours on DCX3510-M
What I would recommend you try first would be to disconnect the power from the PVR and then expander, then remove the eSATA cable from both ends. Reconnect the eSATA cable, reconnect the power to the expander first, wait 30 seconds then reconnect the power to the PVR.
Hopefully this helps, but please let us know if this is still a problem.
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