ONTAP Discussions
ONTAP Discussions
Hi All,
We have 30 SAS disks in our environment and i would like to know what will be the total size of these disks and USABLE SIZE ,WAFL RESERVE , AGGR SNAP RESERVE etc..
Please note we don't have SNAPSHOT at VOLUME LEVEL but we have only at the AGGR level.
Thanks,
Nayab
Solved! See The Solution
These will NOT be exact numbers obviously, but it appears you are calculating with 300 GB disks but not right-sizing them. 300 GB disks actually right-size to 272 GB each, I think.
So you should see something like this:
30 disks, 2 parity, 28 data disks
Aggr Size: 28 * 272 = 7616 GB
WAFL Reserve: 7616 * .10 = 762 GB
Aggr Reserve: 7616 * .05 = 381 GB
Usable Aggr Size: 7616 - 762 - 381 = 6473 GB
Are these are right figures please confirm ??
These will NOT be exact numbers obviously, but it appears you are calculating with 300 GB disks but not right-sizing them. 300 GB disks actually right-size to 272 GB each, I think.
So you should see something like this:
30 disks, 2 parity, 28 data disks
Aggr Size: 28 * 272 = 7616 GB
WAFL Reserve: 7616 * .10 = 762 GB
Aggr Reserve: 7616 * .05 = 381 GB
Usable Aggr Size: 7616 - 762 - 381 = 6473 GB
Hi there,
Just take away 30% from the total GB(#of disks * size of the disk), that will be your usable capacity.
thank you,
AK G