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pxtian's avatar
pxtian
Level 4
10 years ago

Maximize Tape Utilization in Backup Exec 2014 - DELL PV 124T (LTO5)

Hi,

I have noticed for one of our newer BE servers that tapes aren't being fully utilized. 

 

LT00006 - used from Dec 19 to Dec 27 (983GB out of 1.39TB)

LT00007 - used from Dec 29 to Jan 6 (630GB out of 1.39TB)

LT00008 - used from Jan 5 to present (365GB out of 1.39TB)

 

How can I make sure that tapes get full first before the backup jobs move on to the next blank tape?

This is a DELL Powervault 124T with only 1 Tape drive and 16 tape slots.

 

 

2014
Backing Up
Backup and Recovery
Backup Exec
Basics
Best Practice
Configuring
Tip-How to
Windows Server (2003-2008)
  • pkh's avatar
    pkh
    10 years ago
    If you appending to the tapes then increase your AP, so that more jobs can append to them
  • Colin_Weaver's avatar
    Colin_Weaver
    10 years ago

    AP begins when the tape is first overwritten by a job and is the when the AP expires (blocking further appends) is fixed until you overwrite the tape again.

    OPP (Overwite Protection Period) however does move around as it is fixed to the last write to the tape (so the end of the last backup set created on it)

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  • pkh's avatar
    pkh
    Moderator
    10 years ago
    If you appending to the tapes then increase your AP, so that more jobs can append to them
  • pxtian's avatar
    pxtian
    Level 4
    10 years ago

    Thanks, pkh. I think that may just be what I need. However right now, the tapes are set to an AP of 1 week. It seems that the tapes the duration for the first 2 tapes was more than 1 week each based on the backup sets inside? Is the AP not an exact science?

     

    Dec 19 to Dec 27

    Dec 29 to Jan 5

  • Colin_Weaver's avatar
    Colin_Weaver
    Moderator
    10 years ago

    AP begins when the tape is first overwritten by a job and is the when the AP expires (blocking further appends) is fixed until you overwrite the tape again.

    OPP (Overwite Protection Period) however does move around as it is fixed to the last write to the tape (so the end of the last backup set created on it)

  • pkh's avatar
    pkh
    Moderator
    10 years ago
    Read this document to understand AP and OPP better http://www.symantec.com/docs/TECH5459