Attach ebs volume to this AWS ec2 instance?

2
votes

Hi I’m running a website on an m3.2xlarge AWS ec2 instance which is ebs backed.

I want to change the instance type to m2.2xlarge instance.

This new instance already has instance storage of 850 gb hdd

My question is can I attach the existing ebs drive to the new m2.2xlarge instance? and boot to the website?

Please advise thanks!

2
amazon-ec2amazon-ebs
Stop m3 instance, Detach EBS from m3 instance. Attach EBS to m2 instance and mount. – Aniket Chopade
The thing is I will be modifying m3 instance to m2 and then I can attach ebs volume? Thanks – sd100
Your existing EBS will remain attached after resizing. Added full answer below with references. – Aniket Chopade

2 Answers

0
votes

There are 2 possibilities

1

  • stop your running Instance, Detach the volume (or take a snapshot of it)
  • Now while launching the new Instance you can add additional volume along with your Root volume (of new Instance). Just keep in mind you cannot delete or exclude the Root volume of new Instance while Launching, its just that you can add an extra volume along with the root volume

2

  • Stop your running Instance
  • Go to actions and then Select Insatnce Setting and then click on Change Instance Type
  • Select your desired Type of Instance
  • after changing the Type of instance, you can restart the Instance

enter image description here

0
votes

Your existing EBS will remain attached after resizing. You will not get to see instance store which comes with m2.2xlarge . This wont get add up to resized instance. This is based on documentation here

When you resize an instance, the resized instance usually has the same number of instance store volumes that you specified when you launched the original instance. If you want to add instance store volumes, you must migrate your application to a new instance with the instance type and instance store volumes that you need