Tape is not full but doesn't want to backup

[pinaumihai]

I can not backup on a TAPE A00020 which is ACTIVE on a specific volume pool:

May 14, 2018 12:10:08 PM - Error nbjm (pid=5952) NBU status: 96, EMM status: No media is available

unable to allocate new media for backup, storage unit has none available  (96)

Media ID: A00020
Partner: -
Media Type: HCART
Volume Group: 000_00000_TLD
Application: Netbackup
Media Flags: 1
Description: Added by Media Manager
Barcode: OSS586L4
Partner Barcode: --------
Last Write Host: backup.local
Created: 10/23/2015 11:05
Time Assigned: 05/13/2018 08:56
First Mount: 11/24/2016 09:17
Last Mount: 05/14/2018 12:12
Volume Expiration: -
Data Expiration: 05/11/2028 11:29
Last Written: 05/14/2018 11:29
Last Read: 05/14/2018 12:12
Robot Type: TLD
Robot Number: 0
Slot: 21
Side/Face: -
Cleanings Remaining: -
Number of Mounts: 51
Maximum Mounts Allowed: 0
Media Status: ACTIVE
Kilobytes: 123157906
Images: 10
Valid Images: 10
Retention Period: 24
Number of Restores: 0
Optical Header Size Bytes: 1024
Optical Sector Size Bytes: 0
Optical Partition Size Bytes: 0
Last Header Offset: 1924370
Adamm Guid: 00000000-0000-0000-0000-000000000000
Rsm Guid: 00000000-0000-0000-0000-000000000000
Origin Host: NONE
Master Host: backup.local
Server Group: NO_SHARING_GROUP
Upgrade Conflicts Flag:
Pool Number: 7
Volume Pool: POOL1

so, the TAPE have more space but netbackup doesn't want to backup there.

[david_moline]

Hi

NetBackup by default does not mix backups of different retentions on a single tape. The tape you listed look to have a 10year retention. 

Does the backup that is failing also have the same retention setting in the policy? If not then it will not use the listed media unless you change the settings (and this in general is a bad idea BTW and I would caution against doing it). 

Cheers
David