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Dirk_Mueller's avatar
Dirk_Mueller
Level 5
14 years ago

NB 6.5.5: Data error (cyclic redundancy check)

Hi@ll,

I got some error-messages vor different clients, different media-servers, different drives and different tapes:

21:59:43.816 [5084.4436] <16> io_ioctl: ioctl (MTFSF) failed on media id R10694, drive index 17, Data error (cyclic redundancy check). (23) (bptm.c.7201)
21:59:43.816 [5084.4436] <2> send_MDS_msg: DEVICE_STATUS 1 17503065 vms-zv04 R10694 4003619 HP-RZ1-05 2000619 POSITION_ERROR 0 0
21:59:43.910 [5084.4436] <2> log_media_error: successfully wrote to error file - 09/21/10 21:59:43 R10694 17 POSITION_ERROR HP-RZ1-05
21:59:43.910 [5084.4436] <2> check_error_history: just tpunmount: called from bptm line 23967, EXIT_Status = 86

What can be the reason for this error-messages?

 

TIA

Dirk

7.1.x and Earlier
Backup and Recovery
NetBackup
  • Nicolai's avatar
    Nicolai
    14 years ago

    Status code 86 indicate a "media position error".

    See :

    http://www.symantec.com/business/support/index?page=content&id=TECH56460&actp=search&viewlocale=en_US&searchid=1285139601526

    I often see media position errors on worn-out LTO drives or drives that badly need a cleaning tape. Another reason for status code 86 is a previous status code 84.

    My advise: use cleaning tape, suspend media with status code 86 (use the GUI)

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  • Marianne's avatar
    Marianne
    Level 6
    14 years ago

    Bad media is the cause in most cases.

    http://www.symantec.com/business/support/index?page=content&id=TECH35336

    ftp://ftp.entsupport.symantec.com/pub/support/products/NetBackup_BusinesServer/273908.pdf

     

     

     

  • Nicolai's avatar
    Nicolai
    Moderator
    14 years ago

    Status code 86 indicate a "media position error".

    See :

    http://www.symantec.com/business/support/index?page=content&id=TECH56460&actp=search&viewlocale=en_US&searchid=1285139601526

    I often see media position errors on worn-out LTO drives or drives that badly need a cleaning tape. Another reason for status code 86 is a previous status code 84.

    My advise: use cleaning tape, suspend media with status code 86 (use the GUI)

  • Dirk_Mueller's avatar
    Dirk_Mueller
    Level 5
    14 years ago

    Hi,

    thanks for your answer.

    The HP-Support told us LTO-4-Drives don´t need cleanings. If we have any problem with a drive we will change it with a new one.

    I´m wondering, because we get this error-messages dayly for different hardware (tapes, drives, media-servers).

  • Dirk_Mueller's avatar
    Dirk_Mueller
    Level 5
    14 years ago

    HI Wrobbins,

    because that will increase the profit :-)
    They sold us 100 cleaning cartridges with two libraries. After they told us that LTO4 drives don´t need cleanings they rebought most of them.

  • Nicolai's avatar
    Nicolai
    Moderator
    14 years ago

    A log of design has been put into the LTO series to reduce the need to cleaning tapes (e.g internal cleaning brush). However our local StorageTek/SUN/Oracle rep. recommend to use a cleaning tape once a month - and we use our drives at least 14 hour every day.