| ESX Server 3.0 and VirtualCenter 2.0 Available For Download |
| Friday, 16 June 2006 by Michel Roth | |||
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NAS and iSCSI Support ESX Server 3.0 can store virtual machines on NAS and iSCSI. iSCSI LUNs, like Fibre Channel LUNs, can be formatted with the VMware file system (VMFS). Each virtual machine resides in a single directory. Network attached storage (NAS) appliances must present file systems over the NFS protocol for ESX Server to be able to use them. NFS mounts are used like VMFS with ESX Server creating one directory for each virtual machine. iSCSI enabled through a software initiator (100% implemented as a software layer over TCP/IP) is fully supported in this release. Clusters A cluster is a collection of hosts that can be managed as a single entity. The resources from all the hosts in a cluster are aggregated into a single pool. A cluster looks like a stand-alone host, but it typically has more resources available. VMware DRS VMware DRS allows resources from all hosts in a cluster to be treated as a single, aggregated pool. When changes occur in the environment, DRS can tune the resource scheduling on individual hosts as well as use VMotion to rebalance workload across hosts in the cluster. When a virtual machine is powered on, DRS calculates the optimal host on which to start it, given current resource levels and the resource configuration of the new virtual machine. Resource Pools A resource pool provides a way of subdividing the resources of a stand-alone host or a cluster into smaller pools. A resource pool is configured with a set of CPU and memory resources that are shared by the virtual machines that run in the resource pool. Resource pools can be nested. VMware HA VMware HA (HA) increases the availability of virtual machines by detecting host failures and automatically restarting virtual machines on other available hosts. HA operates on a set of ESX Server 3.0 hosts that have been grouped into a cluster with HA enabled. Creating 64-bit Virtual Machines By default, 64-bit guests are now visible in the Virtual Infrastructure Client interface and marked as "experimental." Remote CD/Floppy Using either the Virtual Infrastructure Client or Virtual Infrastructure Web Access, a virtual machine can access a CD or floppy device from the client's machine. Hot-Add Virtual Disk ESX Server 3.0 supports adding new virtual disks to a virtual machine while it is running. This is useful with guest operating systems capable of recognizing hot-add hardware. Download here.
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