topic Decrease size of LUN. in ONTAP Hardware

Decrease size of LUN.

Gyani — Wed, 04 Jun 2025 23:12:36 GMT

i have increase FC lun size of 70 GB for temporray purpose. This lun has log drive of sql Database.

Lun type :- FC

Server:- Windows 2008

Total Lun size:- 150 GB

Size needs to reclaim:- 75 Gb.

Software used to increase size:- Snap drive.

Please help how to reduce size of lun. is there any risk of file system corruption ?

Re: Decrease size of LUN.

scottgelb — Thu, 24 Sep 2015 20:58:47 GMT

Snapdrive can resize a lun larger or smaller... You can't shrink below the used space https://library.netapp.com/ecm/ecm_download_file/ECMP1506027

Re: Decrease size of LUN.

Gyani — Fri, 25 Sep 2015 08:31:55 GMT

Thanks, can we decrease lun size during production hour. is there any change to corrput file system. This volume contains log file of SQL Database.

Re: Decrease size of LUN.

scottgelb — Fri, 25 Sep 2015 13:07:17 GMT

To get comfortable with the process, you could clone the volume or lun, then safely test on the clone... Also, no matter what, before shrinking the production lun, create a snapshot from SMSQL, then you are protected if there is an issue on the resizing..