Solved

Vmware  disk expand and create new disk question

Posted on 2012-12-20
8
463 Views
Last Modified: 2012-12-22
I have a linux box running of vmware and I have added 100GB as third drive, added to volume group and extended the volume,  but is there any  performance difference by  expanding the disk  instead of creating new disk?
0
Comment
Question by:mokkan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 40

Assisted Solution

by:coolsport00
coolsport00 earned 200 total points
ID: 38710795
No..none. Assuming this is a 'data volume' & not a system volume, and assuming your "linux" OS version supports it, it is recommended to use a pvscsi scsi controller driver for data disks (not system disks) for better performance. But, using that controller type is also only recommended if you have IOPS > 2000 over that disk.

Regards.
~coolsport00
0
 
LVL 6

Assisted Solution

by:traoher
traoher earned 200 total points
ID: 38710801
If you are using a SAN as your storage, the answer is no.  It is still straight IOPs back to the SAN.  However, you might want to consider a different block size for performance vs waste of padded space.
0
 
LVL 120

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 100 total points
ID: 38710822
No, but it's not recommended, because you will create two snapshots per parent disk, which can cause you issues in the future.
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:mokkan
ID: 38710827
Thank you very much. Yes, disk from SAN. Is there any performance in OS? Does system need more cpu cycle, if we add as a second disk instead on increasing?
0
 
LVL 40

Assisted Solution

by:coolsport00
coolsport00 earned 200 total points
ID: 38710833
There is no perf degradation; no added vCPUs are needed.
0
 
LVL 6

Accepted Solution

by:
traoher earned 200 total points
ID: 38710861
Nope, as long as you can extend, you are good.  FYI, you cannot have any snapshot if you choose to extend the vmdk.
0
 

Author Comment

by:mokkan
ID: 38716310
I've requested that this question be closed as follows:

Accepted answer: 125 points for traoher's comment #a38710861
Assisted answer: 125 points for coolsport00's comment #a38710795
Assisted answer: 125 points for traoher's comment #a38710801
Assisted answer: 0 points for mokkan's comment #a38710827
Assisted answer: 125 points for coolsport00's comment #a38710833

for the following reason:

thank you all of you guys.
0
 

Author Closing Comment

by:mokkan
ID: 38716311
Thank you all of you guys. Great information.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

In this article, I show you step by step with screenshots to assist you - HOW TO: Deploy and Install the VMware vCenter Server Appliance 6.5 (VCSA 6.5), with some helpful tips along the way.
This article outlines why you need to choose a backup solution that protects your entire environment – including your VMware ESXi and Microsoft Hyper-V virtualization hosts – not just your virtual machines.
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.
This Micro Tutorial steps you through the configuration steps to configure your ESXi host Management Network settings and test the management network, ensure the host is recognized by the DNS Server, configure a new password, and the troubleshooting…

732 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