Dear Philip
While we're not a hosting provider, we still do have a lot of experience with virtualization platforms. We are currently running ~150 vSphere and Citrix XenServer servers and we've played around with Xen, KVM and others.
Two things I would like to give as advice:
- Storge is often underestimated. With virtualization you'll need a lot more storage throughput and access speed than with physical machines. NFS/NAS/iSCSI arenot a good ideas and are not a replacement for a real SAN. - Networking and network separation is an important factor in virtual environments. You might keep an eye on that aspect as well.
Kind regards, Viktor
On 04.05.2011 11:03, Philip Iezzi wrote:
Hi
As a small web hosting provider we are planning to switch from physical-only servers to virtualization. So far, our favorite virtualization platform is OpenVZ under Debian Squeeze. We might consider running Proxmox as host system but prefer sticking with plain Debian (even though the future of the OpenVZ-kernel is not guaranteed). Our main goals: hardware independency, reliability, maintenance (single kernel virtualization), power efficiency (reduce number of physical servers), cost.
We're looking for a Swiss hosting provider who is actively using such a single kernel virtualization technology. What's your experience with OpenVZ? How about resource separation of containers (VPS)? Have you got any experience running complete containers off a NFS-mounted NAS/SAN? How about performance in a web hosting environment with resource peaks on various servers? We would greatly appreciate if anybody could share his experience with OpenVZ (or similar single-kernel virtualization) and get in touch with us for some consulting.
Thanks. Regards, Philip
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