May I know how & where to check if the Aggregate is running out of spaces, to avoid LUN offline because of not enough spaces to expand.
I have an Aggregate 16 TB with 6 TB used spaces as displayed in Web GUI.
However, when I checked its 3 x Volumes (with Dedup and Compression Storage Efficiency) which are all Thin Provisioned (total volume spaces over-provioned to 18 TB), all 3 x Volumes are 90% spaces utilized.
Inside the 3 x Volumes, all the LUN with Space Reservation but NO Snapshot.
This has led me to think that the Aggregate might be running out of disk spaces soon despite the Aggregate is still showing 6TB used spaces only.
How to check if my aggregate isn't running of spaces soon???
You do not say what ONTAP version you have; in current ONTAP LUN space reservation is honored only on thick provisioned volume (i.e. when space reservation is enabled for volume itself) which matches what you see.
I have left about 1TB free spaces for the Volume and the aggregate is still showing only 6 TB used.
6TB is the actual usage on the disk. when the utilization of luns increase aggr utilization also would report an increase. if you want to test place a big file in the lun and check the aggr utilization.
How can I check to avoid LUN offline from insufficient spaces in Volume and/or Aggregate????
If there are no new volumes get created on the aggr utilization should't go higher than the size of already created volumes.
Another way is to changes the space-guarntee of all 3 volumes to volume from none.So aggr free space should report free space than those volumes capacity.
vol modify -volume TEST -vserver testvserver -space-guarantee volume
Thanks, I worrying there could be insufficent spaces for the LUN because my LUN is 14 TB, with its containing Volume 15 TB which can autogrow/shrink to 16.5 TB, but since my aggregate is 16.67 TB, contains another fixed volume of 1 TB, the 2 x volumes together are already over-provisioned to 17.5 TB exceeding the aggregate size of 16.67 TB.
My last run of the Dedup&Compression on the 15 TB Volume that has just run last night (it runs weekly on Monday midnight) shows that total saving is 3.55 TB.
I just want to have a wy to check to make sure that the LUN won't go offline because either of insufficient volume spaces (which not likely to occur because I always leave about 1 TB free volume spaces), or insufficient Aggregate spaces.