----- Original Message ----- | ----- Original Message ----- | | On 1/28/2011 3:55 AM, carlopmart wrote: | | > Hi all, | | > | | > I need to install a virtual machine acting as a virtual storage | | > server under | | > CentOS 5.x (using kvm, xen, virtualbox or vmware). This virtual | | > storage machine | | > needs to server storage to another ESXi server and at the same | | > time | | > to the host | | > where is installed. | | > | | > This is due to the limitations of hardware I have available. | | > Both | | > hosts needs to | | > server several machines. | | > | | > It is very important that the virtual machine consumes the | | > least | | > resources | | > possible (host has 5GB RAM and i need to run three virtual | | > machines | | > minimum, | | > including this storage server as a virtual machine). | | | | What's the point of adding an extra virtual layer compared to an nfs | | or | | iscsi share from the host (nfs if it is shared, iscsi if it is the | | VM | | image store)? This seems like it would be more efficient if you run | | exsi on the hardware with centos and the others as guests anyway. | | | | -- | | Les Mikesell | | lesmikesell@gmail.com | | _______________________________________________ | | CentOS mailing list | | CentOS@centos.org | | http://lists.centos.org/mailman/listinfo/centos | | There are some advantages that I can see in that if your hardware dies | you can migrate the entire host and disks over to another VMWare | hosts. | | If your NFS host is not H/A a loss of the host would take down the | virtual machines too. Additionally, virtualization offers the ability | to migrate the VM and disk to newer hardware somewhat transparently | allowing you to take advantage of the latest/greatest/buggy tech. | | Just my 2c ;) | | -- | James A. Peltier | IT Services - Research Computing Group | Simon Fraser University - Burnaby Campus | Phone : 778-782-6573 | Fax : 778-782-3045 | E-Mail : jpeltier@sfu.ca | Website : http://www.sfu.ca/itservices | http://blogs.sfu.ca/people/jpeltier | | | _______________________________________________ | CentOS mailing list | CentOS@centos.org | http://lists.centos.org/mailman/listinfo/centos
I should add though that you will likely see a rather large performance penalty on the I/O side