Bug 1618982

Summary:	[v2v][doc] Concurrent conversions via vSphere and VDDK should be limited to 10
Product:	Red Hat CloudForms Management Engine	Reporter:	Mor <mkalfon>
Component:	Documentation	Assignee:	Avital Pinnick <apinnick>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Andrew Dahms <adahms>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	5.9.4	CC:	apinnick, dagur, kdixon, michal.skrivanek, mkalfon, obarenbo, rjones
Target Milestone:	GA
Target Release:	cfme-future
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-08-22 09:09:07 UTC	Type:	Bug
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Mor 2018-08-19 08:28:20 UTC

Description of problem:
There should be a documentation to the user, who chooses to use VDDK transport method and converting directly to VMware vCenter, to not raise the default limit of 10 concurrent conversions, otherwise, the user might hit the following issue: https://bugzilla.redhat.com/show_bug.cgi?id=1614276

Version-Release number of selected component (if applicable):
CFME 5.9.4.2
VMware vSphere 6.5
RHV 4.2.5.3-0.1

Document URL: 

Section Number and Name: 

Describe the issue: 

Suggestions for improvement: 

Additional information:

Comment 2 Daniel Gur 2018-08-19 08:38:34 UTC

VMware document to reference that explaining this limitation:

vSphere is limited to 32 mb connection buffer

"
vSphere 5 and vSphere 6
	
to an ESXi host
	
Limited by a transfer buffer for all NFC connections, enforced by the host; the sum of all NFC connection buffers to an ESXi host cannot exceed 32MB.
52 connections through vCenter Server, including the above per-host limit.
"

https://pubs.vmware.com/vsphere-6-5/index.jsp?topic=%2Fcom.vmware.vddk.pg.doc%2FvddkDataStruct.5.5.html&resultof=%22%4e%46%43%22%20%22%6e%66%63%22%20%22%53%65%73%73%69%6f%6e%22%20%22%73%65%73%73%69%6f%6e%22%20%22%4c%69%6d%69%74%73%22%20%22%6c%69%6d%69%74%22%20

Comment 10 Daniel Gur 2018-08-20 15:36:10 UTC

Avital, I think  you can point to this VMware doc explaining the VDDK  vsphare limitation


VMware document to reference that explaining this limitation:

vSphere is limited to 32 mb connection buffer

"
vSphere 5 and vSphere 6
	
to an ESXi host
	
Limited by a transfer buffer for all NFC connections, enforced by the host; the sum of all NFC connection buffers to an ESXi host cannot exceed 32MB.
52 connections through vCenter Server, including the above per-host limit.
"

https://pubs.vmware.com/vsphere-6-5/index.jsp?topic=%2Fcom.vmware.vddk.pg.doc%2FvddkDataStruct.5.5.html&resultof=%22%4e%46%43%22%20%22%6e%66%63%22%20%22%53%65%73%73%69%6f%6e%22%20%22%73%65%73%73%69%6f%6e%22%20%22%4c%69%6d%69%74%73%22%20%22%6c%69%6d%69%74%22%20