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Oracle 10g Storage Supplement for

Configuring Dell™ EqualLogic

Series iSCSI Storage for Microsoft

Windows

- Version 4.1

EqualLogic Terminologies

EqualLogic PS series storage arrays include storage virtualization technology.

To better understand how these arrays operate, it is helpful to be familiar with

some of the terminology used to describe these arrays and their functions:

•

Member

— a single PS series array is known as a member.

•

Group

— a set of one or more members that can be centrally managed.

Host servers access the data through a single group IP address.

•

Pool

— a RAID that can consist of the disks from one or more members.

•

Volume

— a LUN or virtual disk that represents a subset of the capacity

ofapool.

Cabling EqualLogic iSCSI Storage System

You can attach the host servers to the Dell™ EqualLogic PS5000XV iSCSI array

through an IP storage area network (SAN) industry-standard Gigabit Ethernet

switch.

Figure 1 shows the recommended network configuration for a dual control

module PS5000XV array. This configuration includes two Dell PowerConnect

6200 Gigabit Ethernet switches to provide highest network availability and

maximum network bandwidth. It is recommended that you use two Gigabit

Ethernet switches because if the switch fails in a single Ethernet switch

environment, all hosts lose access to the storage until you physically replace the

switch and restore the configuration. In such configuration, there should be

January 2009

51296A00.fm Page 9 Tuesday, February 3, 2009 4:10 PM

Summary of content (8 pages)

PAGE 1
51296A00.fm Page 9 Tuesday, February 3, 2009 4:10 PM Oracle 10g Storage Supplement for Configuring Dell™ EqualLogic® PS Series iSCSI Storage for Microsoft® Windows® - Version 4.1 EqualLogic Terminologies EqualLogic PS series storage arrays include storage virtualization technology. To better understand how these arrays operate, it is helpful to be familiar with some of the terminology used to describe these arrays and their functions: • Member — a single PS series array is known as a member.
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51296A00.fm Page 10 Tuesday, February 3, 2009 4:10 PM multiple ports with link aggregation providing the inter-switch or trunk connection. Additionally, from each of the control modules, connect one Gigabit interface to one Ethernet switch and connect the other two Gigabit interfaces to the other Ethernet switch. Figure 1. Recommended Network Configuration Figure 2 is an architecture overview of a sample Oracle™ RAC configuration with 3 PS5000XV arrays. The blue colored cables denote the iSCSI SAN.
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51296A00.fm Page 11 Tuesday, February 3, 2009 4:10 PM Figure 2. Sample Oracle RAC Configuration with three PS5000XV arrays As illustrated in Figure 2, the group named oracle-group includes three PS5000XV members: oracle-member01, oracle-member02, and oracle-member03. When a member is initialized, it can be configured with RAID 10, RAID 5, or RAID 50. For more information on how to initialize an EqualLogic array, see the Dell EqualLogic User's Guide.
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51296A00.fm Page 12 Tuesday, February 3, 2009 4:10 PM In Figure 2, pools are organized by member RAID levels - one pool with the name RAID-10 consists of RAID 10 members; one pool with the name RAID-5 consists of RAID 5 members. Creating Volumes You must configure the PS5000XV physical disks into usable components, known as volumes, before you store data. A volume represents a portion of the storage pool with a specific size, access controls, and other attributes.
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1296A00.fm Page 13 Tuesday, February 3, 2009 4:10 PM Configuring iSCSI Networks It is recommended that you configure the host network interfaces for iSCSI traffic to use Flow Control and Jumbo frames for optimal performance. To set Flow Control and Jumbo frame, perform the following steps: 1 Click Start→Settings→Network Connections. 2 Right click on the iSCSI network interface and click Properties. 3 Click the Configure button. 4 Click Advanced. 5 Highlight Jumbo Packet and set its value to 9014 Bytes.
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51296A00.fm Page 14 Tuesday, February 3, 2009 4:10 PM 9 In the System Restart Required window, select Yes, I want to restart my computer now, and click OK. 10 Once the server is up, a Remote Setup Wizard window appears. 11 Select Configure MPIO settings for this computer, then click Next. 12 Move the iSCSI network subnets under Subnets included for MPIO. Move all other network subnets under Subnets excluded from MPIO. Check the box beside Load balance across paths. Click Finish.
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51296A00.fm Page 15 Tuesday, February 3, 2009 4:10 PM Configuring Microsoft iSCSI Initiator 1 Double click the Microsoft iSCSI Initiator icon on the desktop. The iSCSI Initiator Properties window appears. 2 On the Discovery tab, the IP address of the EqualLogic group address should already be populated by the HIT tool kit. 3 On the Targets tab, click on one volume that was created for the Oracle database and click Log On.
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51296A00.fm Page 16 Tuesday, February 3, 2009 4:10 PM Verifying the Storage Assignment to the Nodes Follow the steps in section "Verifying the Storage Assignment to the Node" of the Oracle 10g Deployment Guide. Preparing the Disks for Oracle Clusterware Follow the steps in section "Preparing the Disks for Oracle Clusterware" of the Oracle 10g Deployment Guide. Removing the Assigned Drive Letters Follow the steps in the section "Removing the Assigned Drive Letters" in the Oracle 10g Deployment Guide.