Dell AX4-5 Dokumentacja Pobierz pdf (Strona 41)

MV/CE and guest clustering using RDMs

In this type of guest clustering, RDM volumes are assigned to the virtual machines and failover-cluster

software, and MV/CE software is installed and configured on these virtual machines. The following

restrictions apply when working with this configuration:

• Only physical compatibility mode RDMs can be used for cluster shared storage.

• Virtual-to-physical clustering (for example, standby host clustering) is not supported.

• MV/CE 3.1.0.14 (see EMC Knowledgebase emc213675) must be used.

• CLARiiON storage system must be running FLARE release 26 or later.

MirrorView/CE and guest clustering using direct iSCSI disks

In this type of guest clustering, the failover cluster software and MirrorView/CE software are installed on

the virtual machines and direct iSCSI disks are configured. In other words, the Microsoft software initiator

must be running on the individual guest operating systems, and must be connected directly to the

CLARiiON storage system via iSCSI. You can configure virtual machines as cluster nodes in the Failover

cluster wizard provided by Microsoft.

For more information, please see the following resources on Powerlink:

• EMC MirrorView/Cluster Enabler (MV/CE) – A Detailed Review white paper

• EMC MirrorView/Cluster Enabler Product Guide

• EMC MirrorView/Cluster Enabler Release Notes

Setup for Microsoft Cluster Service is available at

http://www.vmware.com/pdf/vi3_35/esx_3/r35u2/vi3_35_25_u2_mscs.pdf.

CLARiiON and VMware NPIV support

VMware ESX 4.0 and 3.5/ESXi support NPIV, which allows individual virtual machines to have their own

virtual WWNs. This allows SAN vendors to implement their QoS tools to distinguish I/O from an ESX

server and a virtual machine. VMware NPIV is still primitive with a lot of restrictions; however, this

section gives the user an idea on how to configure VMware NPIV with CLARiiON storage systems,

To configure VMware NPIV, the HBAs (within the ESX server) and the FC switches must support NPIV,

and NPIV must be enabled on each virtual machine. In order to enable NPIV on a virtual machine, at least

one RDM volume must be assigned to the virtual machine. In addition, to use the NPIV feature within

VMware, LUNs must be masked to both VMware ESX Server and the virtual machine that is NPIV

enabled.

Figure 25 shows how to enable NPIV for a virtual machine. As mentioned, for the NPIV feature to be

enabled, an RDM volume must be presented through the ESX server to the virtual machine. Note that once

NPIV is enabled virtual WWNs are assigned to that virtual machine.

EMC CLARiiON Integration with

VMware ESX Server

Applied Technology 41

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 57 58

Brak uwag

Dell AX4-5 Dokumentacja Strona 41