Hi,

I have a DLT4700 Mini Library connected to an Ultra 10 which is the NB 
server. OS is Solaris 2.5.1, NB version 3.2.

For some reason Netbackup keeps downing this drive randomly. When I use 
drive control to bring it back up, backups will proceed without problems. 
Also when the system is rebooted, almost always, the drive is downed.

Here's part of my syslog (I'm looking into the late collisions problem too):

unix: glm1:    Cmd (0x607bdd60) dump for Target 1 Lun 0:
unix: glm1:            cdb=[ 0xa 0xc 0xb5 0x20 0xa 0x0 ]
unix: glm1:    pkt_flags=0x4000 pkt_statistics=0x61 pkt_state=0x7
unix: glm1:    pkt_scbp=0x0 cmd_flags=0x18e0
unix: WARNING: /pci@1f,0/pci@1/scsi@1,1 (glm1):
unix:  Connected command timeout for Target 1.0
unix: WARNING: ID[SUNWpd.glm.cmd_timeout.6017]
unix: WARNING: /pci@1f,0/pci@1/scsi@1,1 (glm1):
unix:  Target 1 reducing sync. transfer rate
unix: WARNING: ID[SUNWpd.glm.sync_wide_backoff.6014]
unix: WARNING: /pci@1f,0/pci@1/scsi@1,1/sd@1,0 (sd17):
unix:  SCSI transport failed: reason 'reset': retrying command
unix: WARNING: /pci@1f,0/pci@1/scsi@1,1/sd@1,0 (sd17):
unix:  SCSI transport failed: reason 'timeout': retrying command
unix: SUNW,hme0: late collision
unix: st12:    <Quantum DLT 4700 Mini Library>
unix: st12 at glm1:
unix:  target 5 lun 0
unix: st12 is /pci@1f,0/pci@1/scsi@1,1/st@5,0
unix: SUNW,hme0: late collision

I'd appreciate any pointers.

Regards,
Rasana
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