On Wed, Jun 11, 2008 at 10:25 PM, Ruslan Sivak <russ@xxxxxxxxxx> wrote:
Luke S Crawford wrote:Yea, I've been playing around with this. The performance seems on par with the XenSource drivers, but like you said, it's pretty beta. James has been great in fixing the bugs, but it's just not ready for production use right now. Without using the GPLPV drivers, Xen is not ready for production use, the IO throughput sucks, and there is no graceful shutdown.
russ@xxxxxxxxxx writes:
If you only have 512mb of ram, there's almost no reason to virtualize. Windows needs a minimum of 128-512MB to run stable. I highly suggest that you get more RAM - its very cheap these days.
seconded. my standard server has 8G unbuffered ecc. Newegg sells 2x2Gb packs of unbuffered ECC kingston brand ddr2 for under $100.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134312
No reason, really, to not fill your motherboard with ram.
If you want to dedicate a box to virtualization, and won't be using more then 4GB of ram for your virtual machines - I highly recommend xenserver express. Its free, but has much better performance then vmware.
the free (closed) xensource product is good... I also wanted to point out the new gpl windows pv drivers:
http://wiki.xensource.com/xenwiki/XenWindowsGplPv/
you could use them with the standard open-source Xen, or even with the Xen support distributed with CentOS 5, and avoid the ram limits all together.
(well, there is a limit to the open-source xen, but it's ridiculous; most
of us won't hit it for several years, at least.)
still kinda beta, but something to watch.
If XenServer Express would only allow for 8GB, it would be perfect. The administrative interface is really polished and fully featured (except things like migrations, which understandably come with the enterprise version).
Once the GPLPV drivers mature a little bin and someone makes some decent admin tools for Xen, Xen will be ready for the enterprise. I bet a company can make good money just developing and selling the admin tools for Xen.
Russ
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Perhaps you could be interested in this project:
I discovered three major issues in the usage scenarios of OpenVZ in the enterprise market:
- Installation takes time and needs Linux knowledge
- The missing GUI management
- And the inability to run unmodified guests like Windows on an OpenVZ host
Now we have the virtualization platform for the enterprise, licensed under GNU GPLv2.
Proxmox VE is the only virtualization platform which can do all of the following on one physical host:
- Container Virtualization (OpenVZ)
- Full virtualization (KVM)
- Para-virtualization (KVM)
Feel free to get in contact with me directly - martin@xxxxxxxxxxx.
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