Re: Multi-Datacenter Deployment

2015-01-07 Thread Logan Barfield
___ > From: Logan Barfield > Sent: Wednesday, January 07, 2015 2:00 PM > To: d...@cloudstack.apache.org > Cc: users@cloudstack.apache.org > Subject: Re: Multi-Datacenter Deployment > > A followup here: You can't have secondary storage that

Re: Multi-Datacenter Deployment

2015-01-07 Thread Simon Weller
another. - Si From: Logan Barfield Sent: Wednesday, January 07, 2015 2:00 PM To: d...@cloudstack.apache.org Cc: users@cloudstack.apache.org Subject: Re: Multi-Datacenter Deployment A followup here: You can't have secondary storage that spans regions (e.g, te

Re: Multi-Datacenter Deployment

2015-01-07 Thread Logan Barfield
Jan 7, 2015 at 12:57 PM, Simon Weller wrote: > See inline. > > From: Logan Barfield > Sent: Wednesday, January 07, 2015 11:43 AM > To: d...@cloudstack.apache.org > Cc: users@cloudstack.apache.org > Subject: Re: Multi-Datacenter De

Re: Multi-Datacenter Deployment

2015-01-07 Thread Simon Weller
See inline. From: Logan Barfield Sent: Wednesday, January 07, 2015 11:43 AM To: d...@cloudstack.apache.org Cc: users@cloudstack.apache.org Subject: Re: Multi-Datacenter Deployment I appreciate the explanation. That seems to confirm what I was thinking

Re: Multi-Datacenter Deployment

2015-01-07 Thread Logan Barfield
I appreciate the explanation. That seems to confirm what I was thinking, that until regions are working 100% we'll just have to make sure the DC-to-DC links are as stable/redundant as possible to prevent HA issues. If we increase the HA delay it shouldn't be a major issue, and it will still be bet

Re: Multi-Datacenter Deployment

2015-01-07 Thread Simon Weller
Logan, We currently run CS in multiple geographically separate DCs, and may be able to give you a little insight into things. We run KVM in advanced networking mode, with CLVM clusters backed onto Dell Compellent SANs. We currently have different DCs running different zones per DC, in a single

RE: Multi-Datacenter Deployment

2015-01-07 Thread Paul Angus
Hi Logan, The biggest issue to deal with in a multi-datacenter deployment is the database, specifically latency between database nodes and between the CloudStack management servers and the database. Hosts in remote zones quite happily talk back to remote management servers over WAN links. Cur