Thanks, Edison! That's very helpful info.
On Thu, Jan 10, 2013 at 3:49 PM, Edison Su <edison...@citrix.com> wrote: > > > > -----Original Message----- > > From: Mike Tutkowski [mailto:mike.tutkow...@solidfire.com] > > Sent: Thursday, January 10, 2013 2:22 PM > > To: cloudstack-dev@incubator.apache.org > > Subject: CloudStack Storage Question > > > > Hi everyone, > > > > I'm new to CloudStack and am trying to understand how it works with > > regards to storage exposed to hypervisors. > > > > For example: > > > > My company, SolidFire, has a feature that exists at the virtual-volume > (for us, > > equivalent to a LUN) layer: Hard Quality of Service. So, for each > volume in > > one of our clusters, you can specify a minimum and maximum number of > > IOPS (beneficial to Cloud Service Providers who want to write hard SLAs > > around performance). > > > > We have a potential customer who is using CloudStack currently with > another > > vendor (via NFS shares). They asked me today how a hypervisor run under > > CloudStack would see the iSCSI storage exposed to them in one of our > > volumes. More specifically, can the hypervisor see a volume per VM or > is the > > hypervisor forced to create all of its VMs off of the same volume? If > the > > hypervisor is forced to create all of its VMs off of the same volume, > then this > > would significantly reduce the value of our hard quality of service > offering > > since all of these VMs would have to run at the same performance SLA. > > > It depends on hypervisor, for KVM, per VM per LUN will work, xenserver > doesn't work. For Vmware, it will work, but with a limitation(one ESXi host > can only have 256 LUN at max). > > > > > Can anyone help me better understand how this would work? > > > > Thanks so much!! > > > > -- > > *Mike Tutkowski* > > *Senior CloudStack Developer, SolidFire Inc.* > > e: mike.tutkow...@solidfire.com > > o: 303.746.7302 > > Advancing the way the world uses the > > cloud<http://solidfire.com/solution/overview/?video=play> > > *(tm)* > -- *Mike Tutkowski* *Senior CloudStack Developer, SolidFire Inc.* e: mike.tutkow...@solidfire.com o: 303.746.7302 Advancing the way the world uses the cloud<http://solidfire.com/solution/overview/?video=play> *™*
