On Fri, Mar 4, 2011 at 12:11 PM, John R Pierce <pierce at hogranch.com> wrote: > On 03/04/11 11:59 AM, m.roth at 5-cent.us wrote: >>> I'm looking forward to the new cgroups and KVM. This will give it >>> > some capabilities similar to AIX virtual partitions which can divvy up >>> > CPUs at a fine resolution. >> Really? So IBM ported VM into native AIX? I missed that. > > IBM Power servers since the Power4+ CPU (they are up to Power7 now) have > hardware partitioning support, commonly known as LPAR. LPAR can be > divided in units of 1/10th of a CPU. The software to manage this is > now called PowerVM (its been called other names in the past, not all > polite). > > In addition, AIX 6.1 and newer have Workload Partitions (WPAR), which > are similar to Solaris Zones, these allow subdividing an AIX install > into an arbitrary number of apparently different systems that all share > the same kernel. > > LPAR plus VIOS (Virtual IO System, actually a stripped down > preconfigured AIX system) corresponds to the Xen model, however the base > hypervisor capability is built right into the CPU and IO hardware, VIOS > just provides management and optional virtualized IO. You can assign IO > adapters directly to partitions, whereupon the partitions (VMs) run even > if VIOS is shut down. The newer Power6 and 7 servers have Ethernet > adapters that provide each LPAR with its own hardware-virtualized > ethernet adapter so you don't need a cage full of cards, or run all the > networking through VIOS. > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > This is why I'm not totally impressed with virtualization today, but I've used it ions ago in enterprise solutions. =) There's a reason why IBM solutions are so expensive sides the amount of people they staff on projects. You also get technology that the industry never new existed. -- James H. Nguyen CallFire :: Systems Architect http://www.callfire.com 1.949.625.4263