topic Re: optimizing PM vFiler migration throughput and monitoring progress in ONTAP Discussions

optimizing PM vFiler migration throughput and monitoring progress

fletch2007 — Thu, 05 Jun 2025 07:06:33 GMT

Hi,

we've got about 20Tb of data in 15 vfilers to migrate.

I'd like to know how I can optimize throughput (eg will paring down the snapshots on the source before migrating help?)

How can I best monitor the progress?

I used "snapmirror status" on the last one, it was confusing because while the rate did not seem steady and it progressed up to 150Gb on a volume that was 85/500Gb full then completed.

The main goal is to be able to estimate snapmirror initialization completion ETA so I can plan when I'll be doing the manual cutovers - I need to be watching all the clients during cutover, so can't let it happen automatically in the middle of the night...

Is there a better progress monitor than snapmirror status?

thanks

Re: optimizing PM vFiler migration throughput and monitoring progress

adaikkap — Thu, 28 Oct 2010 05:58:56 GMT

There is a tool availabe which will estimate time for completion of a given snapmirror transfer.Take a look at the below link.

http://communities.netapp.com/message/41930#41930

Regards

adai

Re: optimizing PM vFiler migration throughput and monitoring progress

fletch2007 — Thu, 28 Oct 2010 06:21:46 GMT

I'm trying the tool - its listing -6% progress for my vFiler migration volume

However it shows other regularly scheduled snapmirrors happening with positive numbers and progress bars

The vfiler volume is > 2Tb

And I keep getting a popup at refresh saying:

"In order to use this version of Snapmirror Progress Monitor you need data ONTAP version 7.3 or higher"

I have 7.3.3

Any ideas?

this would be useful!

thanks

Re: optimizing PM vFiler migration throughput and monitoring progress

adaikkap — Thu, 28 Oct 2010 06:54:49 GMT

The negative number could be because of the volume size being more than 2TB and the int declaration in the tool might be 32 bit.

Thanks for the volume size hint. Will check with the tool and get back to you.

With respect to the popup you are getting, can you get the version command output from your filer and the screenshot of the popup so that

we can replicate it inhouse to see whats happening ?

Regards

adai

Re: optimizing PM vFiler migration throughput and monitoring progress

fletch2007 — Thu, 28 Oct 2010 17:32:51 GMT

na01> version
NetApp Release 7.3.3: Thu Mar 11 22:29:52 PST 2010

Screenshot is attached

thanks

Re: optimizing PM vFiler migration throughput and monitoring progress

adaikkap — Fri, 29 Oct 2010 01:58:33 GMT

Hi Fletch,

What was the version of the tool that you used ?

That will help in narrowing the problem.

I think for the popup message, you used version 2.1 which give the choice of HTTP/HTTPs to connect to the storage system.

Is the following options enabled on your source storage system ?

options httpd.admin.enable on
options httpd.admin.ssl.enable on

Regards

adai