• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 128
  • Last Modified:

svMotion between two different datastore limitation ?

Hi All,

Is there any reason as to why the sVmotion from my iSCSI VMFS data store to my NFS data store is limited to just 4x VMs at the same time ?

svMotion screenshot
Is this because of the ethernet MPIO bandwidth limitation, NAS IOPS performance limitation or ESXi 6 limitation ?

How to increase it into its maximum value ?

See the screenshot below from the QNAP network traffic and each own data store network performance:
QNAP NAS traffic status
0
Senior IT System Engineer
Asked:
Senior IT System Engineer
  • 2
1 Solution
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is this because of the ethernet MPIO bandwidth limitation, NAS IOPS performance limitation or ESXi 6 limitation ?

Neither.

It's - vMotion Bandwidth. (Storage vMotion Bandwidth). e.g. VMKernel Portgroups. So add more VMKernel Portgroups, e.g. up to 4 x 10-GB pNICs or 16 1-GB pNICs.

enable Jumbo Frames can make the transfer quicker.

Also the Maximum number is 8 concurrently, if using 10-GB. (per host).

It used to be 1 per host.

You can check all the stats here

Configuration Maximums vSphere 6.0

also remember that vMotion and Storage vMotion are different, and have different values.

So unless you change your networking, unlikely to change.
1
 
Senior IT System EngineerIT ProfessionalAuthor Commented:
Thanks Andrew !
0
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
no pronlems
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now