Increasing the size of a LUN

You can increase the size of your thinly provisioned or space-reserved LUNs with the lun resize command.

About this task

If the configured size of a LUN is filled and you cannot write additional blocks to that LUN, you can increase the size of the LUN with the lun resize command, provided your volume contains enough space. For example, if you configure the size of a LUN to be 50 GB and all 50 GB of that LUN is filled with data, you can use the lun resize command to increase the size of your LUN provided the volume has available space.

You do not have to take your LUN offline to increase the size of that LUN. When you increase the size of your LUN, Data ONTAP automatically notifies the initiator that the LUN size has increased.

You can grow a LUN to approximately 10 times its original size. For example, if you create a 100 GB LUN, you can grow that LUN to approximately 1,000 GB. However, you cannot exceed 16 TB, which is the approximate maximum LUN size limit.

Use the lun resize command to increase the size of your LUN.

Example

lun resize /vol/italy/venice +10g

Above command will increase lun size of  venice lun  by 10GB.

lun resize /vol/italy/venice -10g

Above command will decrease lun size of venice lun by 10GB.