On Jun 30, 2009, at 10:51 AM, Atom Powers wrote: > What kind of storage do you use for your VMs?
We've had a lot of success with the Storage Appliances by LeftHand (now acquired by HP's StorageWorks division). They are iSCSI appliances that cluster together, share a virtual-IP amongst themselves, keep replicas of your data on more than one appliance for redundancy, etc., etc. So basically you create an iSCSI LUN, and every block of data on that LUN appears on (2) different appliances, with the Virtual-IP serving you up data from one or the other as it sees fit. If the appliance that has the VIP on it goes down, one of the other appliances takes over seamlessly. The LeftHand software makes things REALLY easy to do. For instance, we had installed (3) SATA-based storage-modules. After a while, we decided we wanted better performance of SAS-based modules. With other vendors' solutions, it would have required creating new LUNs, migrating data from one LUN to another, mounting the new LUNs, etc., etc. With LeftHand, we simply told the cluster "remove these SATA units but at the same time add these SAS units" and it seamlessly restriped our data across all the new modules, SERVING THE DATA THE WHOLE TIME. We migrated from one set of storage modules to another with NO production impact. :-) So, yeah... LeftHand FTW. :-) Cheers, D _______________________________________________ Discuss mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
