Also a bit concerned that we're moving to OpenVZ. It's, historically, been un-secure and a most of the "fly by night" VPS providers utilize OpenVZ, due to the capabilities of over-selling service, at a detriment to the customers.
We're about 15% done with the migration so far and are running migration at all 3 datacenters at the same time. Migration is running pretty well with no major issues. There are, of course, few issues that happens every now and then and most of these are due to disabled start of services on system boot. If you reboot your VPS (i.e. through the Power Panel) and it comes back up with all services up and running then migration should work perfectly fine as well.
UPDATE 6/18/15 - Migrations have officially begun.
UPDATE 7/12/15 - Migrations are 15% complete.
UPDATE 8/20/15 - Migrations are 40% complete.
Over the course of the next 6-12 months we are going to migrate each VPS on our network off of the Virtuozzo platform and onto the OpenVZ platform. This will not require any action on your part and will for the most part be a pretty seamless transition. It will require a single reboot to your VPS which should take no more than a few minutes. For VPSs with many millions of files it could take longer as a VPS quota recalculation will take place during this reboot.
The main reason we are making this migration is because Virtuozzo as a product is reaching it's end of life, whereas OpenVZ is an actively maintained project very similar to Virtuozzo. The differences in Virtuozzo and OpenVZ this day and age are actually very minor. The only one which will effect the normal operation of your VPS is the decommissioning of Virtuozzo Power Panel. As each VPS is upgraded, control of it will become available within the KnownHost client area. Our sister company, RocketVPS has been built on top of OpenVZ and it's proven to be a stable and reliable platform.
This will be a positive step forward as with OpenVZ comes new capabilities for VPS control within our client area and an all new Java console to let you access a command line of your VPS should you become locked out. Of course you can always open a support ticket in this situation as well, some will find this new feature very handy. As an added bonus, we're setting all VPS port speeds to 100Mbps and deploying new VPSs with this port speed as opposed to our old default setting of 10Mbps.
Below are answers to some questions you'll probably have:
Q: Will I keep my IPs?
A: Yes you get to keep them. Your IPs will not change.
Q: Will there be any downtime?
A: There will be a few minutes of downtime for a single VPS reboot and quota recalculation.
Q: Will my VPS port speed change?
A: Yes! We're raising all VPS network port speeds to 100Mbps for those who's VPS wasn't already set this way.
Q: Is there anything I need to do?
A: No, we'll take care of everything. Sit back, relax, and let us do the heavy lifting
Q: How can I tell if my VPS has been moved?
A: The best way is to look within the client area. If the name of your package ends with (m) it has not been moved yet. For example, “VPS-3 (m)” has not been moved, whereas “VPS-3” has been. In addition, there will be new VPS control options available to you if your VPS has been moved. These features are documented at https://wiki.knownhost.com/my-knownhost#vps_control
Q: Can you move all of my VPSs at once?
A: No. Migrations are being performed very carefully, generally based on node.
Q: Can you move my VPSs first?
A: Unfortunately we cannot schedule any particular VPS to be moved prior to another one.
Q: When will you move my servers?
A: This depends on a number of factors such as how fast the container before yours migrated, how fast the node before yours migrated, how quickly our staff are able to complete post-migration tasks, etc. As such, we cannot give you an exact time frame to expect migration.