Solved

Speeding up the Export to OVF Process?

Posted on 2014-12-03
4
532 Views
Last Modified: 2014-12-03
I have found that in my experience, no matter what the specifications of the host and the fact that we have 1GB network everywhere and good enough NAS.  Export to OVF takes mega ages to complete.  It always seems to go at a speed no faster than 6MB/s.

Is there a setting somewhere in vcenter to get this to move along at a faster clip, IE a speed that most modern cellphones can dwarf by all measures.  Like a "business usable" switch to on attribute in a configuration file or GUI.  It seems like a deliberate throttle, as there is no fundamental resource usage or limitation that I can see or am aware of that would slow this down to such a steadily rubbish speed.

Thanks for the information.
0
Comment
Question by:CnicNV
  • 2
  • 2
4 Comments
 
LVL 117
ID: 40478835
Exporting or copying data from ESXi, does take time, whether Export to OVF, download from datastore, or "VMware Converter", throughput is based on source datastore speed, network throughput between host and destination, and speed of target storage.

Part 10: HOW TO: Backup (Export) and Restore (Import) virtual machines to VMware vSphere Hypervisor 5.1 for FREE

Jumbo Frames can help.

How long does it take to Export, and what size of VM (only the data is exported).
0
 

Author Comment

by:CnicNV
ID: 40479294
The size of the VM I was exporting was about 450GB, so it was large.  But its going from an at least 7200RPM hard drive to another 7200RPM hard drive, from a host that doesn't have all that much IO activity occurring on it over a 1 GB network.  5MB/s is slow, really slow.  The entire process took about 22 hours.

This is anecdotal of course, but if I copy a file from my computer over to a NTFS based network share on the same target NAS, its transfer speed is at least 25 MBs per second.

There is one thing I can think of, that the copy to the NAS from an ESXI host is being handled by the intermediary vcenter server that has the concerned NAS partition as a mapped drive on the OS.  So If I look at the switch, instead of activity going directly from the esxi host to the NAS, its going "through" the vcenter server, so I have three switch ports that are showing 5 MB/s.  But that's still unreasonably slow.  I suppose I can add a NAS partition as shared storage to vcenter and that this may make it faster, by double?  That's still only 10MBs.

I know with some forms of vmware vm migration it uses encryption, and that there are articles on disabling this and it being speed up be more than three times.  But, I don't see how the OVF export data in motion would be encrypted...

I dunno, in my opinion, no matter how you slice the bread it just seems like it could/should be faster than 5MBs
0
 
LVL 117

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40479308
450GB is large, and those are slow datastores.

Any transfer will be slow.
0
 

Author Closing Comment

by:CnicNV
ID: 40479341
Alright, it is what it is.

Thanks for the feedback and info :-)
0

Featured Post

Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

Join & Write a Comment

When we have a dead host and we lose all connections to the ESXi, and we need to find a way to move all VMs from that dead ESXi host.
HOW TO: Upload an ISO image to a VMware datastore for use with VMware vSphere Hypervisor 6.5 (ESXi 6.5) using the vSphere Host Client, and checking its MD5 checksum signature is correct.  It's a good idea to compare checksums, because many installat…
Teach the user how to convert virtaul disk file formats and how to rename virtual machine files on datastores. Open vSphere Web Client: Review VM disk settings: Migrate VM to new datastore with a thick provisioned (lazy zeroed) disk format: Rename a…
Teach the user how to install and configure the vCenter Orchestrator virtual appliance Open vSphere Web Client: Deploy vCenter Orchestrator virtual appliance OVA file: Verify vCenter Orchestrator virtual appliance boots successfully: Connect to the …

708 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

12 Experts available now in Live!

Get 1:1 Help Now