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Questions about migrating from Xen

D

Dark Shade

[H]ard|Gawd
Joined
May 2, 2006
Messages
1,872
My company currently uses Xen as the virtualized platform running RHEL/CentOS (moving towards all-CentOS by the end of the year), but with the release of CentOS 6.0 and exclusion of Xen moving forwarding (being replaced by KVM), we are looking for options to move away from Xen within the next 1-3 years.

We like free options (reason why we're moving to CentOS from Redhat), so Xen worked great. KVM is the native option to move towards but we're looking around at other options such as VMware, but their costs seem extremely high for something we're paying nothing for now. I'd like to get some options if folks would like to give them :)
 
VMware has ESXi which can be free, but you're going to be missing things you might find value in now, like live migration (or as VMware would call it, vMotion). VMware charges a lot of money for their technology, but I wouldn't call the prices high as a general statement. They're just high to you, and there is nothing wrong with that. Many SMBs feel that way, but many feel just as strongly that VMware is more than worth the money especially in the enterprise.
 
If Xen _was_ your platform, wouldn't XenServer be an option?
I am not up on licensing, but I believe they still have a "free" version.
 
How about proxmox ve ? KVM based & has a nice web gui....AND FREE!
 
xen has mainline kernel support now and is available in centos 6 still. there is no reason to move away from it if youre comfortable with it.
 
From what I've read, getting Xen to work on CentOS6 and higher will be more or less a 'hack'; we're kickstarting new servers with CentOS 5.7 and sticking with that until we can find a virtualization solution that fits our needs and is compatible with CentOS 6+ (we're not moving away from the CentOS/SELinux platform)

Also, we're not terribly thrilled about performance issues on KVM as compared to Xen when it comes to networking and disk I/O (from reports and benchmarks I've read, and we run some pretty hefty databases on a SAN) as well as the fact that Xen is significantly more mature software-wise than KVM.

Like I said, this may be a progression that takes months or years, but I'd like to put feelers out to see what's available on the mid-size business budget. For all I know, KVM could be the hypervisor of choice this time next year and the migration will be relatively painless.
 
idk, doesn't seem that difficult to get xen 4.x for EL6.

have you considered some other linux maybe as the base for your dom0s? you can still standardize all the other production on centos but say run gentoo (or w/e you're comfortable with) or something as dom0.
 
also forgot to add something here, why don't you just move to Xen Cloud Platform? You should download the ISO and check it out.
 
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