how much extra space in a volume to store LUNs
2013-01-30 01:37 AM
We create 1 volume per server in our environment.
Netapp does not allow using all capacity in the volume,
so you always have to make the volume a bit larger than the LUN(s) stored in it.
My question is:
what is the minimum amount of free space in a volume that should be guaranteed when using the volume to store LUNs ?
volume - 101GB
We will not create snapshots of the volume.
-> NO SNAPSHOT SCHEDULES
-> NO SNAPSHOT RESERVE
-> SNAPSHOT AUTODELETE ENABLED, AUTOGROW DISABLED
-> NO fractional reserve
-> storage efficiency not enabled
The 2 LUNs are online and working,
but the volume is showing as 100% used.
The key question:
Is this safe (only 1GB extra in the volume),
or would it be safer to make the volume for example 110 GB ?
We don't unnecessarily want to waste space,
but we also don't want to run into a LUN offline condition.
Seeing the 100% used on the volume kinda makes me feel uncomfortable.