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3 2. Architectural Setup ..................................................................................................... 3 3. iSCSI Connectivity Support ........................................................................................ 4 4. PowerVault MD3000i Storage Setup and Configuration ........................................... 4 5. iSCSI Software Initiator Configuration on ESX Server ............................................. 5 6. Configure iSCSI storage on ESX Server .................................................................... 8 7. References ................................................................................................................... 9 1. Introduction The Dell™ PowerVault™ MD3000i storage solution consists of a standard or high availability configuration. The standard model has a single controller with two 1GbE ports. It can be deployed to support up to 16 hosts non-redundantly. The high availability model has dual controllers with two 1GbE ports per controller for a total of four 1GbE ports. The dual controller option can connect up to 16 fully redundant hosts. This document provides instructions to setup the MD3000i iSCSI storage solution for usage with VMware® ESX Server™ software. The Dell PowerVault MD3000i iSCSI storage array contains four Ethernet ports through which the VD can be accessed affording both redundancy and availability of data. Provisioning of storage on servers in a VM environment is a multiple step process starting with definition of the server names for host access. The iSCSI connection is then established from the storage subsystem, and after detection and configuration is established as a two way link with the associated ESX server(s), completing the iSCSI communication subsystem. The final step allocates the detected storage to the individual virtual machines (VM’s), where all or part of the configured storage can be assigned to individual VM’s. 2. Architectural Setup The following figure illustrates a typical high availability setup for using the MD3000i in an ESX Server farm. As a best practice, Dell recommends using a separate Gigabit Ethernet network switch to handle iSCSI storage traffic. Two servers are connected to two switches. Each switch has a path to the MD3000i via the two dual port controllers. In this base HA configuration, the servers, switches, and MD3000i ports share the same subnet. The NIC ports serving iSCSI traffic on the ESX servers are teamed. LANESX Server 1MD3000iESX Server 2MD1000MD1000Ethernet SwitchesLANESX Server 1MD3000iESX Server 2MD1000MD1000Ethernet SwitchesLANESX Server 1MD3000iESX Server 2MD1000MD1000Ethernet SwitchesLANESX Server 1MD3000iESX Server 2MD1000MD1000Ethernet Switches Figure 1: MD3000i High Availability Configuration 3. iSCSI Connectivity Support Operating System Host Bus Adapter VMware ESX Server 3.5 iSCSI software initiator with ESX Server 4. PowerVault MD3000i Storage Setup and Configuration Create virtual disks on MD3000i using steps described in: After opening the Modular Disk Storage Manager and selecting the MD3000i storage array to be configured, select the Configure tab. Note: in the examples to follow the Storage array “sg23_training” is an MD3000i with virtual disks already configured using the Create Virtual Disks selection. The new server being added to an existing host group is named “Valhalla”. From the Configure tab 1. Select Configure Host Access (Manual). 2. Enter the host name for the server which has the ESX Server software is installed. 3. Select Linux as the host type. From the next screen, specify the iSCSI Initiator by selecting the New button (lower right on screen). On the Enter New iSCSI Initiator screen enter a name for the iSCSI initiator name. The label is auto-populated from the server name. Figure 2: iSCSI Initiator Window Host Group configuration starts from the following screen titled “Configure Host Access (Manual) – Specify Host Group”. For ESX servers supporting VMotion, HA, and DRS, a host group must be defined so the MD3000i storage subsystem has a configured iSCSI path to each of the hosts. . Select “Yes: This host will share access to the same virtual disks with other hosts” . If a new host group is desired select the radio button for that option and enter in a name for your host group using standard host naming conventions (e.g. no spaces etc). . Should you already have one or more host groups assigned, select the radio button enabling selection from a drop down list of existing host groups. This option is to be used when configuring the second, third, etc. host in a group. Once the host group is selected previously configured hosts for that host group will be displayed. Note that these are shown as Linux hosts even though they are configured as ESX servers. Selecting Next provides a Confirmation screen in which the new server being configured is shown and the other...