Tapes Filling Up - Even though minium capacity is not reached

[Vince_Corona]

Trying to track down a media utilization issue. I've noticed an increase in the number of tapes used each night. I'm seeing a lot of these messages in the Detailed Status of backups:

"current media NDA436 complete, requesting next media Any"

Ironically, the total tape utilization for NDA436 is only 118GB, even though the media is LTO2 with an uncompressed capacity of 200GB.

It seems like I spend more time these days micro managing my media utilization. I don't remember that being a selling point when we bought NBU :(

Anyone out there with ideas or similar issues?

[Lance_Hoskins]

Is the retention period different for the job that's trying to run different than the data that's already stored on NDA436?

[Vince_Corona]

Nope, the retention period displayed when I run an "IMAGES ON MEDIA" report shows all images with a 6 week retention period.

[Ankur_Kumar]

Hi lance,
Are we relating retention to media, cause a media can have multiple backup images with varying retentions.


Chiao
Ankur Kumar

[Stumpr2]

I would run a bpverify or GUI eqivalent on the media

[Stumpr2]

Vince,
Please see this thread:
http://forums.veritas.com/discussions/thread.jspa?threadID=64885&tstart=0

[Randy_Bobbert]

Something you might want to check. We had the same problem on one of our Master servers. When we checked the Policies, we found that Compression was checked. We had Compression on top of Compression. When we unchecked compression, the tapes filled properly.

[Vince_Corona]

Nope, compression is not checked on any of the policies. Anyone out there think it may be helped by increasing the number of multiplexing?

[Stumpr2]

multiplexing? - NO

[Vince_Corona]

Bob:
I'm suprised by your answer. I would have thought the increased number of multiplexing would reduce shoe-shining and make better use of the media. Am I wrong here?