Open Stack

Thanks for TIP, I'll start with Ceph, then Quadstor. I think when I will 
have some results, i'll post here.

On 28.07.2013 20:04, Tia Song wrote:
>>> I have issue with creating shared storage for Openstack. Main idea is to
>>> create 100% redundant shared storage from two servers (kind of network
>>> RAID from two servers).
>>> I have two identical servers with many disks inside. What solution can
>>> any one provide for such schema? I need shared storage for running VMs
>>> (so live migration can work) and also for cinder-volumes.
>
>>> One solution is to install Linux on both servers and use DRBD + OCFS2,
>>> any comments on this?
>>> Also I heard about Quadstor software and it can create network RAID and
>>> present it via iSCSI.
>
> My two cents worth from a generic concept point view of a network mirror
>
> Key factors to evaluate
> 1. Write latency
> 2. Active-active or use active-passive with automatic ip address failover (using CARP etc)
> 3. Split brain handling
> 4. How soon after a node failure are the two node brought in sync.
>
> quadstor shines in many aspects and  DRBD + SCST is a good alternative. You should evaluate both in my opinion.
>
> -Tia
>
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>