We run NBU 7.0 in our environment, and I've setup four Celerra now, a mix of tape robots.  I've never used the serial number in the process.  You can add the path without knowing the serial number using set_ndmp_attr on NBU 6.5 and earlier.  From the command line on the NBU master servr, you can run set_ndmp_attr -insert -robot server_2  controller> which will configure a tape robot in the device manager.  Once you've got the paths in the device manager, you should be set, from what I've seen.  Will that help?
I 've this problem configuring netbackup to celerra with NDMP.  I went through the Netbackup document and it states  "NetBackup only sees the path and serial number presented to it during  the discovery path. If the path or the serial numbers are incorrect,  they are being received by NetBackup during the discovery process  incorrectly." I guess , this is what is happening in my case.   I can manually add paths to NetBackup if I know the serial number  associated with the path. If I  can find this information, I can assist the backup guy  with editing the paths based on the information.  Is there a way i can find the serial number associated with the path?  Scsi id of the tape drives from celerra   tape1 c224t0l0 tape IBM ULT3580-TD4 A232 ttttape1 c64t0l0 tape IBM ULT3580-TD4 A239 ttape1 c80t0l0 tape IBM ULT3580-TD4 A232 tttape1 c240t0l0 tape IBM ULT3580-TD4 A232  The scsi id what netbackup is enquiring for. error i collected from server_log  2011-01-31 08:47:52: STORAGE: 3: c96t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:52: STORAGE: 3: c112t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:52: STORAGE: 3: c128t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:53: STORAGE: 3: c144t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:53: STORAGE: 3: c160t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:53: STORAGE: 3: c176t0l0: SCSICFG->Inquiry command failed 2011-01-31 08:47:54: STORAGE: 3: c192t0l0: SCSICFG->Inquiry command failed  that is the reason i 'm looking for a way to find the serial number associated with the paths.   Please please help me troubleshoot this:
How can I know the serial number associated with the path to add them manually