Solved

Best way to expand a raw mapped drive in Vmware ESXi 6

Posted on 2016-07-25
6
58 Views
Last Modified: 2016-07-28
I have two disk that I need to increase the size for which are setup as raw mapped luns.
Not sure of the exact steps to get this accomplished. I know I have to increase the size of these on the san first, but then not sure what to do as far as increasing the space on the VMware side once the san side is increased.
If anyone could let me know the best way to get this done?
0
Comment
Question by:vmich
  • 4
  • 2
6 Comments
 
LVL 9

Accepted Solution

by:
Richardson Porto earned 500 total points
ID: 41727756
Your RDM is in virtual or physical mode ? Anyway, the following KB article describe the steps needed in both cases: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1007021

If you have any additional doubt, just let us know.
0
 

Author Comment

by:vmich
ID: 41727764
They are virtual..
0
 

Author Comment

by:vmich
ID: 41727819
Ok I guess I don't understand the correct way to increase the raw disk size..
I increased the space on the san but know I am not sure how to increase the data store raw size.
Does this all involve an outage or can I do this on the fly?
0
How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

 

Author Comment

by:vmich
ID: 41727828
I also forgot to mention that right now the data store that the raw disk is residing on, has 550GB free.
So I guess I can increase the raw disk by 200GB from this free space once I know how to do that?
0
 
LVL 9

Expert Comment

by:Richardson Porto
ID: 41727872
From the KB:

Virtual compatibility mode

To safely expand the RDM:
1. Expand the RDM LUN from the SAN side. Contact your vendor for assistance.
2. Perform rescan on the ESX and verify the new LUN size is observed.
3. Recreate the RDM mapping to update the mapped disk size using one of these methods:
   a) Utilize Storage vMotion to migrate the Virtual RDM disk's pointer file (vSphere 4.0 and later).
   b) Remove the RDM file from the Virtual Machine and delete from disk.
   c) Power off the virtual machine, note the scsiX:Y position of the RDM in VM Settings. Navigate to VM Settings > Add > Hard Disk > RDM, select the scsiX:Y position that the RDM was using before and then power on the virtual machine.
4. Perform a re-scan from the guest operating system. Consult your vendor for assistance.

So, since you already increased the space on SAN, now you need rescan your ESXi HBA, recreate the RDM mapping and then rescan the disks inside the VM.
0
 

Author Closing Comment

by:vmich
ID: 41733490
good doc for steps needed.
0

Featured Post

Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

Join & Write a Comment

It Is not possible to enable LLDP in vSwitch(at least is not supported by VMware), so in this article we will enable this, and also go trough how to enabled CDP and how to get this information in vSwitches and also in vDS.
David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona. Thanks David, for your detailed and honest evaluation!
Teach the user how to rename, unmount, delete and upgrade VMFS datastores. Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:
Advanced tutorial on how to run the esxtop command to capture a batch file in csv format in order to export the file and use it for performance analysis. He demonstrates how to download the file using a vSphere web client (or vSphere client) and exp…

760 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now