Almost one year ago we installed a STK L40 library with Seagate LTO-1 drives attached to our Legato NetWorker server on Windows. Library and all tapedrives are attached to a SCSI Router crossroads and later to the SAN and to several storagenodes using SAN connections.
From the beginning we suffer all kinds of problems in this environment, such as I/O errors, Connection timeouts, tapes which are not unloaded etc. We put a lot of effort in trying to solve these problems. We installed the highest level of firmware and drivers in the LTO drives, SAN (Brocade) switches and in AIX. Most of the problems disappeared, but we are still suffering I/O errors. During backup writing an I/O error occurs, the tape is set to "full" by NetWorker and the backup continues with another tape. It happens on different storagenodes (all AIX), but not on the server. It also happens on all available devices in the STK library. In the errpt of the AIX system we see no errors at all. Any suggestions ???
From the beginning we suffer all kinds of problems in this environment, such as I/O errors, Connection timeouts, tapes which are not unloaded etc. We put a lot of effort in trying to solve these problems. We installed the highest level of firmware and drivers in the LTO drives, SAN (Brocade) switches and in AIX. Most of the problems disappeared, but we are still suffering I/O errors. During backup writing an I/O error occurs, the tape is set to "full" by NetWorker and the backup continues with another tape. It happens on different storagenodes (all AIX), but not on the server. It also happens on all available devices in the STK library. In the errpt of the AIX system we see no errors at all. Any suggestions ???