DLT 7000 tape drive failing with "write error on a record in the index"


 
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Operating Systems HP-UX DLT 7000 tape drive failing with "write error on a record in the index"
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Old 01-12-2012
DLT 7000 tape drive failing with "write error on a record in the index"

HP rp5450 (L2000)
running HP-UX 11.11B
Using DLT 7000 and DLT 4000 tape drives for nightly full backups
Backup jobs created by SAM

DLT 7000 cron entry is as follows:
00 2 * * 1-6 /usr/sam/lbin/br_backup DLT FULL Y /dev/rmt/0m /var/sam/graphLCAa17036 root Y 1 N > /var/sam/SAM_br_msgs 2>&1 #sambackup

On the DLT 7000 have been getting failures for the past month or so, most of which are "write error on a record in the index".

Have tried swapping tape drive positions in the enclosure (SCSI bus) with no luck.
Have tried different tape manufacturers & new/old tapes with no luck.
Have tried multiple DLT 7000 drives with no luck.
Backup jobs using to DLT 4000 are working successfully for same dataset.

Any ideas as to what is causing this failure & how to resolve?

Thanks
 
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tms(4)							     Kernel Interfaces Manual							    tms(4)

Name
       tms - TMSCP magnetic tape interface

Syntax
       For UNIBUS, Q-bus:
	  controller klesiu0 at uba0
	  controller uq0 at klesiu0 csr 0174500 vector uqintr
	  tape tms0 at uq0 drive 0

       For MSI Bus:
	  adapter msi0 at nexus?
	  controller dssc0 at msi0 msinode 0
	  tape tms0 at dssc0 drive 3

       For VAXBI:
	  controller klesib0 at vaxbi0 node 0
	  controller uq0 at klesib0 vector uqintr
	  tape tms0 at uq0 drive 0

	  controller aie0 at vaxbi? node?
	  controller bvpssp0 at aie0 vector bvpsspintr
	  tape tms0 at bvpssp0 drive 0

       For MSI Bus:
	  adapter msi0 at nexus?
	  controller dssc0 at msi0 msinode 0
	  tape tms0 at dssc0 drive 0

       For VAX CI/HSC:
	  adapter ci0 at nexus?
	  adapter ci0 at vaxbi? node?
	  controller hsc0 at ci0 cinode 6
	  tape tms0 at hsc0 drive 3

Description
       Prior to Version 2.0, this device was referenced by tmscp(4).

       The  TMSCP  driver  provides  a standard tape drive interface, as described in This is a driver for any controller that adheres to the Tape
       Mass Storage Control Protocol (TMSCP).  The TMSCP controllers communicate with the host through a packet-oriented protocol termed the  Tape
       Mass  Storage  Control Protocol.  This driver also supports n-buffered reads and writes to the raw tape interface (used with streaming tape
       drives).  See for further details.

Tape Support
       TK50, TK70, TF70, TU81, TU81e, TA78, TA79, TA81, RV20, TA90, TA90E, TA91

Diagnostics
       All diagnostic messages are sent to the error logger subsystem.

Files
See Also
       mtio(4), nbuf(4), MAKEDEV(8), uerf(8), tapex(8)
       Guide to the Error Logger

																	    tms(4)