incubator-cloudstack-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Geoff Higginbottom <>
Subject RE: Storage Networks XenServer
Date Fri, 22 Jun 2012 19:42:54 GMT
Hi Frank

If the storage network is for Secondary Storage, why does the admin guide contain the following

"For the separate storage network to work correctly, it must be the only interface that can
ping the primary storage device's IP address. For example, if eth0 is the management network
NIC, ping -I eth0 <primary storage device IP> must fail. In all deployments, secondary
storage devices must be pingable from the management network NIC or bond. If a secondary storage
device has been placed on the storage network, it must also be pingable via the storage network
NIC or bond on the hosts as well."

And it also states

"The secondary storage NFS export is mounted by the secondary storage VM. Secondary storage
traffic goes over the management traffic network, even if there is a separate storage network.
Primary storage traffic goes over the storage network, if available. If you choose to place
secondary storage NFS servers on the storage network, you must make sure there is a route
from the management traffic network to the storage network."

This seems to make it very clear that the "Storage Network" is for Primary Storage, not Secondary.


-----Original Message-----
From: Frank Zhang []
Sent: 22 June 2012 19:45
Subject: RE: Storage Networks XenServer

See my another reply.
The storage network(I admit it's a bad term for this feature) is indeed for secondary storage

> -----Original Message-----
> From: Weiran Xia []
> Sent: Friday, June 22, 2012 4:57 AM
> To:
> Subject: Re: Storage Networks XenServer
> here i got a similar question, there seems be some confusion in terminology.
> From
> it says a storage network is for speeding up template/snapshot copying
> process, and indeed during the zone creation process there is a step
> of configuring this network(ip range,gateway..). when the SSVM is up
> and running it gets 4 NICs, one of them is dedicated for this purpose.
> But where is the storage network for primary storage? is this storage
> network only defined by label in step two (drag and drop) of zone creation?
> is there any relationship between two 'storage networks'?
> thanks very much if someone can clarify the storage nework in 3.0.x
> Regards
> Mice

ShapeBlue provides a range of strategic and technical consulting and implementation services
to help IT Service Providers and Enterprises to build a true IaaS compute cloud. ShapeBlue’s
expertise, combined with CloudStack technology, allows IT Service Providers and Enterprises
to deliver true, utility based, IaaS to the customer or end-user.


This email and any attachments to it may be confidential and are intended solely for the use
of the individual to whom it is addressed. Any views or opinions expressed are solely those
of the author and do not necessarily represent those of Shape Blue Ltd. If you are not the
intended recipient of this email, you must neither take any action based upon its contents,
nor copy or show it to anyone. Please contact the sender if you believe you have received
this email in error. Shape Blue Ltd is a company incorporated in England & Wales.
View raw message