I have a number of 2003 R2 x64 and x86 SP1 servers attached to a fabric-switched IBM Fibre-Channel SAN. The servers are all IBM xSeries servers attached using QLogic QLA2340 HBAs. We are using MPIO and M$s Storport driver (the latest version, or course) for multipathing on all servers. Furthermore, we're using IBMs StorageManager Agents (again, latest version) on all hosts. Also part of that SAN is a Quantum PX502 robotic tape-library which is also Fibre-Channel and attached directly to the SAN (i.e. not physically attached to a server). We are not using any kind of SAN partitioning, so all hosts attached to the SAN see the tape drives and robot. Here's what happens. After rebooting the tape library, some or all of my x64 servers BSOD with a 0x0A stop error and your typical IRQL_NOT_LESS... message. x86 servers have yet to be affected. Debugging the resulting memory dump shows that storport.sys is the culprit. Additionally, soon before the server BSODs, the system event has log entries from PlugPlayManager saying that the tape drives and robot disappeared without being prepared for removal (Event ID 12). Obviously, preparing the hardware for removal on all my servers is out of the question, besides, the hardware never shows up in the list of items to be safely removed. I'm very aware that SP2 is out for 2k3, and I intend to install that someday (once I recover from all the late-night work I've had to put in dealing with this problem); however, I'm not confident that will solve the problem since I will still have the same version of the storport driver. So, short of calling M$ and paying for a support incident, any other bright ideas? I'd appreciate sparing me of basic "update firmware" "update driver" suggestions as those are obvious and already done. Thanks guys (and gals).