TWiki> Sandbox Web>ChrisCookeSandbox (revision 7)EditAttach

Which server for a new KVM guest?

To find out, answer these questions then look at the table below:

  • Does the guest have to be at a particular site, or on a particular subnet?
  • Does the guest have to be fast? The fastest machine is jubilee .
  • Does it need to be very reliable? If so choose a "fully supported" server; choose SAN storage (so the VM can be resurrected if the server dies); and use a server which supports migration (so the VM can keep running through planned server downtime).
  • Is it a temporary or test machine? If so use circle , or use local disk storage rather than SAN (see the individual server pages for details).

click host for details
Performance Storage
Site /
Hot Migration
see notes
jubilee Fastest SAN,
local disk
IF Not yet Fully supported.  
bakerloo Slowest Elderly disk array IF Not yet Essentially a backup for jubilee .
piccadilly Medium SAN,
local disk
KB Yes, to/from northern Fully supported.
northern Medium SAN,
local disk
KB Yes, to/from piccadilly Essentially a backup for piccadilly .
circle Medium Local disk only AT None Use at your own risk. Circle is a "hot spare" so may have to be redeployed at short notice. If this happens then VMs may have to be deleted. Good for temporary or test VMs.

Notes On Migration
  1. Hot migration seems to work well but for us it's experimental as yet (June 2012).
  2. A migrating host will have a perceived downtime of 2 or 3 seconds.
  3. The MPU will do the migration for you, please don't do it yourself.
  4. We're working on cold migration.
Edit | Attach | Print version | History: r11 | r9 < r8 < r7 < r6 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r7 - 19 Jun 2012 - 09:06:11 - ChrisCooke
This site is powered by the TWiki collaboration platformCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback
This Wiki uses Cookies