Some of the STK/Sun disks have hardware features to do this. OpenAFS or Lustre could do this if you allow Linux guests to provide the services, or ZFS if you allow OpenSolaris guests. It'd be very easy to package up an appliance server image to do what you need done with either one (Linux or OpenSolaris).
Other than that, you have to use SFS or BFS, and both need some work to do continuous availability. Minidisks won't work for this. On 4/1/09 5:32 PM, "Gary M. Dennis" <gary.den...@mantissa.com> wrote: Is there a VM I/O management system available which will: 1. Support space allocation requests for guests on a sparse basis? The file server needs to make the guest believe it actually has the entire allocation while only tying up space in the pool the guest actually used. 2. Support Async I/O requests from multiple guests? 3. Dynamically scale and from sub- TB to n EB.
