I manage a 2003 Server network with 500 nodes. I run HP ProCurve switches and use a SonicWall Pro2040. I have about 300 wireless users. We have been experiencing random network drops from servers (file, mail and Oracle DB) for the past 5 months. I have replaced NICs, cables, switches, servers, updated OS, updated firmware, drivers, tested cables, spoken with tier 3 HP tech support and envolved nearly a dozen network engineers, and various support folk. I have entertained ideas ranging from EMF given off by thermostats and HVAC units to ethernet loops caused by bleeding wireless signals. I'm baffled and need help.
Thanks in advance!