Hello everyone,
I have gone through few posts here regarding Collocation by group. And its consequences that TSM can consume more tapes when we dont add a node to any collocation group, with the primary tape pool set with -"Collocation-group" parameter, and that the node will by itself seen as a seperate group.
1. I see a lot of nodes in my environment (around 80) which are not added to any colloc group.
2. Besides migration is running all day from my disk and fileclass storage pools to the primary tape pools
3. If i add 5 tapes TSM is picking up all the 5 tapes soon and if i add 15 tapes and its all gone too.
Is this also due to collocation by group and because a lot of nodes hanging in there without being added to any colloc group.
4. I see a lot of filling tapes with anywhere between 1 to 10 percent utilized (LTO 5 tapes) . But TSM keeps picking up scratch tapes from the libr.manager.
Can you please help me in knowing if this tape utilization issue will be fixed once i add all the nodes to the colloc groups defined appropriately.
Or is there something else that i need to look at.
Looking forward for suggsetions.
Thank you.
I have gone through few posts here regarding Collocation by group. And its consequences that TSM can consume more tapes when we dont add a node to any collocation group, with the primary tape pool set with -"Collocation-group" parameter, and that the node will by itself seen as a seperate group.
1. I see a lot of nodes in my environment (around 80) which are not added to any colloc group.
2. Besides migration is running all day from my disk and fileclass storage pools to the primary tape pools
3. If i add 5 tapes TSM is picking up all the 5 tapes soon and if i add 15 tapes and its all gone too.
Is this also due to collocation by group and because a lot of nodes hanging in there without being added to any colloc group.
4. I see a lot of filling tapes with anywhere between 1 to 10 percent utilized (LTO 5 tapes) . But TSM keeps picking up scratch tapes from the libr.manager.
Can you please help me in knowing if this tape utilization issue will be fixed once i add all the nodes to the colloc groups defined appropriately.
Or is there something else that i need to look at.
Looking forward for suggsetions.
Thank you.