I should add that this is a new configuration for us.

We add the LTO2 drives to the SAN and enabled DWWN on the L700e. We are 
zoning wwn to wwn.

We do have some of the tape drive "direct" connected to our current backup 
server with no issues.  But the ones attached to the new backup server 
through the SAN are giving issues.  The errors I am seeing in Legato 
are "cannot decode block, tape positioning disable", get an I/O error when 
labeling a tape (the tape is successful in labeling).

Here are some of the error messages we are seeing.

Nov  2 13:41:46 thor root: [ID 702911 daemon.notice] NetWorker media: 
(warning) /dev/rmt/S8cbn reading: I/O error
Nov  2 13:41:46 thor root: [ID 702911 daemon.notice] NetWorker media: 
(warning) /dev/rmt/S8cbn reading: Tape label read for volume ? in pool ?, 
is not recognised by Networker: I/O error
Nov  2 13:41:48 thor root: [ID 702911 daemon.notice] NetWorker media: 
(info) LTO Ultrium-2 tape  will be over-written
Nov  2 14:05:09 thor scsi: [ID 107833 kern.warning] 
WARNING: /pci@1e,600000/pci@0/pci@8/SUNW,qlc@0/fp@0,0/st@w500104f0005daf0a,0
 (st3):
Nov  2 14:05:09 thor    Error for Command: write                   Error 
Level: Fatal
Nov  2 14:05:09 thor scsi: [ID 107833 kern.notice]      Requested Block: 
761                       Error Block: 761
Nov  2 14:05:09 thor scsi: [ID 107833 kern.notice]      Vendor: 
IBM                                Serial Number:             
Nov  2 14:05:09 thor scsi: [ID 107833 kern.notice]      Sense Key: Media 
Error
Nov  2 14:05:09 thor scsi: [ID 107833 kern.notice]      ASC: 0x9 (track 
following error), ASCQ: 0x0, FRU: 0x36
Nov  2 14:05:09 thor root: [ID 702911 daemon.notice] NetWorker media: 
(warning) /dev/rmt/S6cbn writing: Invalid argument, at file 83 record 763
Nov  2 14:05:09 thor root: [ID 702911 daemon.notice] NetWorker media: 
(notice) LTO Ultrium-2 tape 206963 on /dev/rmt/S6cbn is full
Nov  2 14:05:09 thor root: [ID 702911 daemon.notice] NetWorker media: 
(notice) LTO Ultrium-2 tape 206963 used 23 GB of 190 GB capacity
Nov  2 14:05:48 thor root: [ID 702911 daemon.notice] NetWorker media: 
(notice) Volume "206963" on device "/dev/rmt/S6cbn": Block size is 32768 
bytes not 65536 bytes. Verify the device configuration. Tape positioning by 
record is disabled.

I do have cases open with Sun and Legato.

Thanks,
Paul

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