Okay, first I want you to think of a couple of things. The experience we have at my office is that networked drives suffer from too little performance when compared to local drives when used to host many root drives.
Our attempt was using 7 drives in a raid 5 in a CoRaid AoE box. 7 drives should have given us really great performance. As it was, it was limited by the ability of the switch to handle the throughput of the root and tmp drives of as many machines as we virtualized. We spent too much time in IOWait. Even now, we are experiencing times with high IOWait on our vmware machines with local drives. High availability and budget don't usually go together for anything that scales much. I would also go out and say I don't think you are going to get the high availability when you talk about the virtualized machines. If your host takes a crap on you, you lose all the running instances. It is possible that will take portions of your system down. If you are just looking for raw secondary storage, I think you will be happy with DRBD and heartbeat. I have built a DRBD system, and set it up with the ability to fire up many services to keep high availability for the drive storage. It isn't too hard. It is more time to describe it here right now. I will write it up shortly. Critch ----- "Chris McQuistion" <[EMAIL PROTECTED]> wrote: > I'm looking for a high availability system to provide iSCSI storage > for > Virtual Iron (similar to VMWare) and NFS for other Linux servers. > (Two > servers/systems providing iSCSI and NFS and if one server/system goes > > down, the other one takes over automatically with no downtime of > services.) > > I've tried several of the guides on the Internet to build my own > system > using DRBD and I'm just not happy with the results. In some cases, I > > have gotten the system working 90-95%, but I don't really have > confidence in the systems I've built. > > I have some decent hardware to work with and a small budget for > software. I would be willing to buy an off-the-shelf system if I > could > find one that does what I need. > > I would love to use Linux and open source software, but only if I can > > have some confidence that the person who built it who really knew what > > they were doing. > > Any ideas? Is there a decently-priced product that can do this and > works well? If not, I would be willing to hire someone to come in and > > build this for me if they have a successful background with this > technology. > > Chris > > -- Steven Critchfield [EMAIL PROTECTED] --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en -~----------~----~----~----~------~----~------~--~---
