Volume and Lun creation resize.

[Uangeloscy]

Hello . I am going to create an aggregate with volume and a lun .My question is shall i give the volume the maximum space and to the lun the space i will be using ?Can i increase the lun space afterwards if needed ?

Lets say i got 10Tb of space shall i make 10 tb of volume and 6 tb the lun .

Thanks in advance.

[gaurav_verma · Accepted solution]

Hi 

It is always easy to increase volume space compare to increasing lun size. My suggestion would be, for starting, keep the volume size nearly same as lun size until you need some extra space for snapshot. 

Yes, you can increase lun size any time but increasing lun size is not as simple as increasing volume size and whenever you increase lun size you should increase file system size (in lun) from host side where lun is mapped. 

Thanks

[Ashun]

hi，

Increasing the volume size is simple, but increasing the lun size is a bit more complicated

If the aggregate space is sufficient, use the following command to increase the volume size,

for example, increase the volume size vol4 to 500g

       volume modify -vserver vs0 -volume vol4 -size 500g

If the lun size is close to the volume l size, increasing the lun size requires first increasing the volume size and then increasing the lun size.

If the volume size is much larger than the lun size, you can directly increase the lun size.

Generally, the lun size is close to the volume size

For details on how to increase the lun size, see the following
https://docs.netapp.com/us-en/ontap/san-admin/resize-lun-task.html