Initialize New Disk(LUN)

Step-by-step guide : For Initialize New Disk

Follow the below steps to Initialize your new disk once Storage Team attached the new LUN :

1. Find out the Disk number assigned to the newly created LUN by running the below command in Powershell window(Run as Admin):
   For Physical Servers: powermt display dev=all
   For GCP Servers : facter -p gce
   
   e.g.: In my case, the newly created LUN is csn_pricing_historical_01 on BOSQLINT02 so the assigned disk number is 90.
   
   
   

2. Now open Disk Management from the server(You can use diskmgmt.msc in Run or else can go from the Computer Management → Storage→ Disk Management).
   Find your newly created disk(which is disk 90 in my e.g.) and bring it online if it is offline.
   
   
   
   

3. Once it is online, Now start Initializing your new disk. You will see the Initialize disk window, Please make sure you have only selected your disk and Partition Style should be GPT only.
   Click on OK.
   
   
   
   

4. Now, right click on your Unallocated disk and select New Simple Volume and just follow the next steps.
   You will see the New simple volume wizard, just click on next.
   
   
   
   

5. Now, you need to assign your new LUN to specific Drive or Path.
   e.g. In my case, I want to mount the LUN csn_pricing_historical_01 in W:/SQL/Data. So just Select the Path till W:/SQL/Data and click on New Folder, name the folder with LUN name which you want and just click OK.
   
   
   
   

6. Please select the below option before clinking on Next. Make sure you have selected all the below options correctly.
   File System : NTFS(By default)
   Allocation Unit Size: 64K
   Volume Label : Your New LUN Name (Note: This may be differ for GCP servers as we used like mssql-csn-xyz)
   
   
   
   

7.  On the Last page, please verify all your details as you provided are correct and then click on Finish.

You will be able to see your new LUN on the mounted path now. 

Step-by-step guide : For manual extension on OS.

1. Login into the server where you need to extend the volume manually. Go to Disk Management(Run→ diskmgmt.msc), locate your LUN (in my case it is aad_archive)

2. Just right click on the LUN and select Extend Volume.(Please refer below screenshot)
   
   
   

3. Click on Next→ Next→ Finish. All set.
   
   
   

Step-by-step guide : How to convert Partition Style of existing disk from MBR to GPT or vice versa

1. Please make sure the disk which you are going to convert must be empty disk. 

2. Now, open the Disk Management(in Run→ diskmgmt.msc): Go on to your disk and then right click select option Delete Volume.
   
   
   
   

3. Please manually delete the assigned folder from the previous mount path as well. 

4. Then, right click on the left side on your disk number and select option Convert to GPT disk (It was already MBR, so if you are converting from GPT to MBR, you will see MBR)
   
   
   

The disk is successfully converted into GPT(you can verify it in properties). Now you just need to assign that volume(Follow steps 4-6 from Initialize New Disk).