คือผมจะทดลองใช้งาน function vmotion แต่ผมไม่แน่ใจว่าในแต่ละ esx นี่ต้อง join domain ด้วยหรือไม่ครับจึงจะใช้ function นี้ได้ หรือแค่ใส่ dns ก็ใช้งานได้แล้ว
ไม่ต้อง Join Domain ครับ
ส่วนการใช้งาน VMotion จะมี Requirements ตามรายละเอียดด้านล่างครับ
VirtualCenter VMotion RequirementsIf you wish to have VirtualCenter perform a migration with VMotion of your virtual machines, you must also have and activate the VirtualCenter VMotion Module. You must activate each host. Activation requires a specific VMotion license for each host.
In addition, the ESX Server hosts you are planning to migrate between must meet the following requirements. Complete these requirements before you attempt to perform a VMotion migration.
- The hosts must share a storage area network (SAN) infrastructure.- Configure all of your ESX Server hosts to use a single Virtual Machine File System (VMFS) volume. The virtual machine's disks have to be on a VMFS that is accessible by both source and target hosts.
The shared VMFS access mode VMFS setting should be public.
Set the size of the VMFS volume sufficiently large, and spanning enough LUNs, to store all of the virtual disks for your virtual machines.
- Ensure that all VMFS volumes on your ESX Server hosts use volume names, and that the virtual machines use the volume names for specifying the virtual disks. Ensure that the CPUs in the VMotion hosts (CPU0 and CPU1) match, for example are both P4. The vendors for CPU0 and CPU1 must match each other
The virtual machine configuration file should not reside on a VMFS located on the shared datastore.
VMotion does not currently support the migration of clustered applications, raw or undoable virtual disks. If you have clustered applications, or raw or undoable disks, store the disks on separate VMFS volumes from the virtual machines you plan to migrate using VMotion.
- VMotion requires a Gigabit Ethernet network between virtual machines. VMotion requires the setup of a private, Gigabit Ethernet migration network between all of the VMotion-enabled hosts. When VMotion is enabled on a host, configure a unique network identity object for the host and connect it to the private migration network.
- Configure a TCP/IP address on an extra network adapter card (NIC) sufficient to support migration. The minimum number of NICs is two — one is dedicated to the host and one is dedicated for sharing between the virtual machines and VMotion. The preferred minimum number is three — one is dedicated to the host, one (or more) are dedicated to the virtual machines, and one is dedicated to VMotion activity.
The figure below illustrates the possible NIC configurations that support VirtualCenter. Refer to Abbreviations for a description of abbreviations.
