https://community.hpe.com/t5/operating-system-hp-ux/dds4-amp-sam/m-p/2750603#M70099 Just cos a device file exists, doesn't mean it points to a valid device. Check using:<BR /><BR />lssf /dev/rmt/c0t3d0BESTb<BR /><BR /><BR />and check what device files *are* assocaited with the tape device by running:<BR /><BR />ioscan -funCtape<BR /><BR />HTH<BR /><BR />Duncan Mon, 24 Jun 2002 08:27:09 GMT Duncan Edmonstone 2002-06-24T08:27:09Z https://community.hpe.com/t5/operating-system-hp-ux/dds4-amp-sam/m-p/2750602#M70098 After connecting a DDS4 dat drive on a J2240 server running HP-UX 10.20, it was impossible to use this dat drive with SAM: Sam internal error.<BR />So I decided to install the path PHCO 22268, the error message disappears but the problem is still remaining. I can use the dat drive to restore information, but if I use it to save information, I get the error message: /dev/rmt/c0t3d0BESTb is not a valid path. This device is well existing.<BR /><BR />What's the solution ? Mon, 24 Jun 2002 08:23:22 GMT https://community.hpe.com/t5/operating-system-hp-ux/dds4-amp-sam/m-p/2750602#M70098 RASE 2002-06-24T08:23:22Z https://community.hpe.com/t5/operating-system-hp-ux/dds4-amp-sam/m-p/2750603#M70099 Just cos a device file exists, doesn't mean it points to a valid device. Check using:<BR /><BR />lssf /dev/rmt/c0t3d0BESTb<BR /><BR /><BR />and check what device files *are* assocaited with the tape device by running:<BR /><BR />ioscan -funCtape<BR /><BR />HTH<BR /><BR />Duncan Mon, 24 Jun 2002 08:27:09 GMT https://community.hpe.com/t5/operating-system-hp-ux/dds4-amp-sam/m-p/2750603#M70099 Duncan Edmonstone 2002-06-24T08:27:09Z