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Term

Definition

iSNS (Microsoft Internet Storage Naming Service)

An automated discovery, management and
configuration Storage Naming Service tool used by
some iSCSI devices.

Management station

The system from which you manage your host
server/storage array configuration.

Storage array

The enclosure containing the storage data
accessed by the host server.

Target

An iSCSI port on the storage array that accepts and
responds to requests from the iSCSI initiator
installed on the host server.

Flow Control

A mechanism for temporarily stopping the
transmission of data.

iSCSI Configuration Worksheet

The

IPv4 Settings — Worksheet

and

IPv6 Settings — Worksheet

helps you plan your configuration.

Recording host server and storage array IP addresses at a single location enables you to configure your
setup faster and more efficiently.

Guidelines For Configuring Your Network For iSCSI

provides general network setup guidelines for both

Windows and Linux environments. It is recommended that you review these guidelines before
completing the worksheet.

Configuring iSCSI On Your Storage Array

The following sections contain step-by-step instructions for configuring iSCSI on your storage array.
However, before you begin, it is important to understand where each of these steps occur in relation to
your host server or storage array environment.

The following table shows each iSCSI configuration step and where it occurs.

Table 2. Host Server Vs. Storage Array

This Step is Performed on the Host Server Using

the Microsoft or Linux iSCSI Initiator

This Step is Performed on the Storage Array Using

PowerVault MD Storage Manager

1. Discover the storage array

2. Configure the iSCSI ports on the storage array

3. Perform target discovery from the iSCSI initiator

4. Configure host access

5. (Optional) Configure CHAP authentication on

the storage array

6. (Optional) Configure CHAP authentication on

the host server

7. Connect to the storage array from the host

server

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Содержание PowerVault MD3860i Series

Страница 1: ...Dell PowerVault MD3860i Series Storage Arrays Deployment Guide ...

Страница 2: ...problem WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2014 Dell Inc All rights reserved This product is protected by U S and international copyright and intellectual property laws Dell and the Dell logo are trademarks of Dell Inc in the United States and or other jurisdictions All other marks and names mentioned herein may be trademarks of their res...

Страница 3: ...nsion Enclosures 16 MD3060e Expansion cabling diagrams 17 Expanding With New PowerVault MD3060e Expansion Enclosures 18 3 Installing MD Storage Manager 20 Modular Disk Configuration Utility 21 Graphical Installation Recommended 21 Console Installation 22 Silent Installation 22 Silent Installation On Windows 22 Silent Installation On Linux 22 Enabling Premium Features Optional 23 Upgrading PowerVau...

Страница 4: ...ting Up The Array 35 Step 2 Configure The iSCSI Ports On The Storage Array 36 Step 3 Perform Target Discovery From The iSCSI Initiator 37 Using Windows Server GUI Version 37 Using Windows Server Core Version 37 For Red Hat Enterprise Linux 6 and SUSE Linux Enterprise Server 11 37 Step 4 Configure Host Access 38 Understanding CHAP Authentication 39 What Is CHAP 39 Target CHAP 39 Mutual CHAP 39 CHAP...

Страница 5: ...st Server Using Windows Server Core Version 44 For Linux Server 45 Step 8 Optional Set Up In Band Management 45 8 Appendix Using Internet Storage Naming Service 46 9 Load Balancing 47 Load Balance Policy 47 Round Robin With Subset 47 Least Queue Depth 47 Least Path Weight 47 Increasing Bandwidth With Multiple iSCSI Sessions 48 Setting Load Balance Policies in VMware 48 10 Appendix Stopping And Sta...

Страница 6: ...ardware and software ensure that the supported operating system is installed and minimum system requirements are met For more information see the Support Matrix at dell com powervaultmanuals Management Station Requirements A management station uses MD Storage Manager to configure and manage storage arrays across the network For more information on management station requirements see the Support Ma...

Страница 7: ...vel for each disk group and virtual disk on your storage array For more information about using RAID and managing data in your storage solution see the Dell PowerVault MD Series Storage Arrays Administrator s Guide at dell com powervaultmanuals Related Documentation NOTE For all PowerVault documentation go to dell com powervaultmanuals and enter the system Service Tag to get your system documentat...

Страница 8: ...ions Availability varies by country and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues Go to dell com contactdell Documentation feedback If you have feedback for this document write to documentation_feedback dell com Alternatively you can click on the Feedback link in any of the Dell documentation pages fill out th...

Страница 9: ...ssword protection and e mail alert notifications for error conditions Design the configuration of virtual disks disk groups and DDP according to a data organization plan For example use one virtual disk for inventory a second for financial and tax information and a third for customer information Decide whether to allow space for hot spares which automatically replace failed physical disks Connecti...

Страница 10: ...ray This type of configuration is only recommended for non critical data storage Path failure from a failed or removed cable a failed HBA or a failed or removed RAID controller module results in loss of host access to storage on the storage array Redundancy is established by installing separate data paths between the host and the storage array each path is to one of the two RAID controller modules...

Страница 11: ...he RAID controller modules If the host server has a second Ethernet connection to the array it can be attached to the iSCSI ports on the array s second controller This configuration provides improved availability by allowing two separate physical paths for each host which ensures full redundancy if one of the paths fail 11 ...

Страница 12: ...trollers In the following figure up to two cluster nodes are directly attached to two RAID controller modules Each cluster node has redundant paths loss of a single path still allows access to the storage array through the alternate path 12 ...

Страница 13: ...IP SAN the PowerVault MD3860i series storage array can support up to 64 hosts simultaneously This configuration supports either single or dual path data configurations and either single or dual controller modules The following figure shows up to 64 stand alone servers attached using multiple sessions to a dual RAID controller configuration through a network using a 1 Gbps to 10 Gbps aggregation sc...

Страница 14: ...on is also supported Figure 4 64 Servers Connected to Two RAID Controllers Remote Replication Remote Replication is a storage array premium feature that provides online real time replication of data between storage arrays The following figure shows an example of how to setup a Remote Replication environment For more information on Remote Replication see the Dell PowerVault MD Series Administrators...

Страница 15: ...ion Environment Mixed Environment The following figure shows mixed configuration that is direct attachment via SAS to one host connectivity to another host via direct attached iSCSI or the IP SAN Figure 6 Mixed Environment 15 ...

Страница 16: ...erVault MD3060e expansion enclosures You can expand the physical disk drive pool to a maximum of 120 or 180 if enabled using Premium Feature activation physical disk drives using a maximum of two expansion enclosures To connect the MD3060e expansion enclosure to your MD Series Dense RAID storage array refer to the diagrams given here 16 ...

Страница 17: ...MD3060e Expansion cabling diagrams Figure 7 Single expansion diagram 17 ...

Страница 18: ...pansion enclosures before you power on the array enclosure For helpful videos and other resources on PowerVault MD series see dell com PVresources Perform the following steps to attach new PowerVault MD3060e expansion enclosures to a PowerVault MD3860i Series storage array 1 Before adding the expansion enclosure s ensure that the storage array software is installed and is up to date 18 ...

Страница 19: ...sure s to the storage array For correct cabling diagrams see Cabling PowerVault MD3060e Expansion Enclosure earlier in this guide 9 Turn on the expansion enclosure s and wait for the enclosure status LED to turn blue 10 Turn on the storage array and wait for the status LED to indicate that the unit is ready When power is on the power on indicator lights solid green If the Service action required i...

Страница 20: ...t Matrix see dell com powervaultmanuals The PowerVault MD3860i Series storage firmware installer provides features that include the core software and providers The core software feature includes the host based storage agent multipath driver and MD Storage Manager application used to configure manage and monitor the storage array solution The providers feature include providers for the Microsoft Vi...

Страница 21: ...ctory of the installation media or downloaded installer image and run the md_launcher exe file For Linux based systems navigate to the root of the resource media and run the autorun file NOTE By default Red Hat Enterprise Linux mounts the resource media with the noexec mount option which does not allow you to run executable files To change this setting see the Readme file in the root directory of ...

Страница 22: ...tically installs the required drivers firmware and operating system patches hotfixes to operate your storage array These drivers and firmware are also available at dell com support In addition see the Support Matrix at dell com powervaultmanuals for any additional settings and or software required for your specific storage array Console Installation NOTE Console installation only applies to Linux ...

Страница 23: ... the file 3 After the custom_silent properties file is revised run the following command to begin the installation mdss_install bin f host_server_path custom_silent properties Enabling Premium Features Optional If you ordered premium features follow the instructions on the Premium Features card to install the additional features Upgrading PowerVault MD Storage Manager To upgrade from a previous ve...

Страница 24: ... it is recommended that you fill out the IPv4 or IPv6 iSCSI configuration worksheet available in this document Gathering this type of information about your network before starting the configuration steps helps you to complete the process more efficiently iSCSI Configuration Terminology Table 1 Standard Terminology Used in iSCSI Configuration Term Definition Challenge Handshake Authentication Prot...

Страница 25: ...SI provides general network setup guidelines for both Windows and Linux environments It is recommended that you review these guidelines before completing the worksheet Configuring iSCSI On Your Storage Array The following sections contain step by step instructions for configuring iSCSI on your storage array However before you begin it is important to understand where each of these steps occur in r...

Страница 26: ...PowerVault MDCU performs Storage array configuration Host configuration Storage Array Configuration Before a host iSCSI initiator and an iSCSI based storage array can communicate they must be configured with information such as which IP addresses and authentication method to use Since iSCSI initiators establish connections with an already configured storage array the first task is to configure you...

Страница 27: ...tion is valid See the storage array s Support Matrix at dell com powervaultmanuals If your host has multiple network interfaces it is recommended that each network interface uses a separate subnet For redundancy in a dual controller duplex configuration ensure each host network interface is configured to connect to both storage array controllers For optimal load balancing ensure each host network ...

Страница 28: ... all host to array mappings you want to implement 8 Verify that communication is established between the storage array and host server NOTE For more information on MDCU see the MDCU online help Post Connection Establishment Steps After iSCSI connectivity is established between the host server s and the storage array you can create virtual disks on the storage array using MD Storage Manager and the...

Страница 29: ...ured for network communication to the same IP subnet as the storage array management and iSCSI ports Using A DHCP server If you are using a DHCP server 1 In the Control Panel select Network connections or Network and Sharing Center and then click Manage network connections 2 Right click the network connection you want to configure and select Properties 3 On the General tab for a local area connect...

Страница 30: ...ect Advanced WINS tab and click Add 5 In the TCP IP WINS server window type the IP address of the WINS server and click Add 6 To enable use of the Lmhosts file to resolve remote NetBIOS names select Enable LMHOSTS lookup 7 To specify the location of the file that you want to import into the Lmhosts file select Import LMHOSTS and then select the file in the Open dialog box 8 Enable or disable NetBI...

Страница 31: ... com GATEWAY 255 255 255 0Ž 2 Edit the configuration file for the connection you want to configure either etc sysconfig network scripts ifcfg ethX for Red Hat Enterprise Linux or etc sysconfig network ifcfg eth id XX XX XX XX XX for SUSE Enterprise Linux BOOTPROTO static BROADCAST 192 168 1 255 IPADDR 192 168 1 100 NETMASK 255 255 255 0 NETWORK 192 168 1 0 ONBOOT yes TYPE Ethernet HWADDR XX XX XX ...

Страница 32: ...oftware from the list of programs and right click 3 Click Uninstall Change The Uninstall Complete window is displayed 4 Follow the instructions on screen 5 Select Yes to restart the system then click Done Uninstall MD Storage Manager From Windows Server Core Versions To uninstall PowerVault Modular Disk Storage Manager on Windows Server Core versions 1 Navigate to the Dell MD Storage Software Unin...

Страница 33: ...ginning the uninstallation procedure 1 From the installation directory open the Uninstall Dell MD Storage Software directory 2 Run the file Uninstall Dell MD Storage Software exe 3 From the Uninstall window click Next and follow the instructions on the screen While the software is uninstalling the Uninstall window is displayed When the uninstall procedure is complete the Uninstall Complete window ...

Страница 34: ...y from the iSCSI initiator 4 Configure host access 5 Optional Configure CHAP authentication on the storage array 6 Optional Configure CHAP authentication on the host server 7 Connect to the storage array from the host server 8 Optional Set up in band management Step 1 Discover The Storage Array Out of band Management Only Default Management Port Settings By default the storage array management por...

Страница 35: ...osing the discovery status window before the discovery process completes cancels the discovery process 3 Click Close to close the screen NOTE Ensure port 3260 is open in your firewall setting for array discovery Manual Storage Array Discovery 1 Launch MD Storage Manager If this is the first storage array to be set up the Add New Storage Array window is displayed 2 Select Manual and click OK 3 Sele...

Страница 36: ... 255 255 255 0 Port 3260 Controller 1 Port 1 IP 192 168 131 102 Subnet Mask 255 255 255 0 Port 3260 NOTE No default gateway is set To configure the iSCSI ports on the storage array 1 From MD Storage Manager navigate to the Setup tab on the AMW Click configure Ethernet management ports and then select Configure iSCSI Host Ports 2 Configure the iSCSI ports on the storage array NOTE Using static IPv4...

Страница 37: ...or header information be compiled during transmission to assist in troubleshooting CHAP logon information Leave this option unselected and do not enter CHAP information at this point unless you are adding the storage array to a Storage Area Network SAN that has target CHAP already configured NOTE IPSec is not supported 6 Click OK to exit the Advanced menu and click OK again to exit the Add Target ...

Страница 38: ... command iscsiadm m discovery t st p IP_address_of_iSCSI_port 8 After target discovery use the following command to manually log in iscsiadm m node l This log in is performed automatically at startup if automatic startup is enabled 9 Manually log out of the session using the following command iscsiadm m node T initiator_username p target_ip u Step 4 Configure Host Access This step specifies which ...

Страница 39: ...ocess both the host server and the storage array send information that the other must validate before a connection is allowed CHAP is an optional feature and is not required to use iSCSI However if you do not configure CHAP authentication any host server connected to the same IP network as the storage array can read from and write to the storage array NOTE When using CHAP authentication you should...

Страница 40: ...e Target CHAP Secret or Generate Random Secret Confirm it in Confirm Target CHAP Secret and click OK Although the storage array allows sizes from 12 to 57 characters many initiators only support CHAP secret sizes up to 16 characters 128 bit NOTE A CHAP secret is not retrievable after it is entered Ensure that you record the secret in an accessible place If Generate Random Secret is used copy and p...

Страница 41: ...ecret At Enter a secure secret enter the mutual CHAP secret you entered for the storage array 4 Click the Discovery tab 5 Under Target Portals select the IP address of the iSCSI port on the storage array and click Remove The iSCSI port you configured on the storage array during target discovery is not displayed 6 Under Target Portals click Add and re enter the IP address or DNS name of the iSCSI p...

Страница 42: ...es node session auth username iscsi_initiator_username node session auth password CHAP_initiator_password 3 If you are using Mutual CHAP authentication you can set the user name and password for CHAP authentication of the target s by the initiator by editing the following lines node session auth username_in iscsi_target_username node session auth password_in CHAP_target_password 4 To set up discov...

Страница 43: ... connected and the status is true Step 7 Connect To The Target Storage Array From The Host Server Connect To The Target Storage Array From the Host Server Using Windows Server GUI 1 Click Start All Programs Administrative Tools iSCI Initiator 2 Click the Targets tab If previous target discovery was successful the iqn of the storage array should be displayed under Targets 3 Click Log On 4 Select Au...

Страница 44: ...rtal Login_Flags Username Password Authtype Mapping_Count where Target_Name is the target name as displayed in the target list Use the iscsicli ListTargets command to display the target list Report_To_PNP is T which exposes the LUN to the operating system as a storage device Target_Portal_Address is the IP address of the iSCSI port on the controller being logged in to TCP_Port_Number_Of_Target_Por...

Страница 45: ...view optimal network setup and configuration settings see Guidelines for Configuring Your Network For iSCSI Step 8 Optional Set Up In Band Management Out of band management see Step 1 Discover the Storage Array Out of band Management Only is the recommended method for managing the storage array However to optionally set up in band management use the steps shown below The default iSCSI host port IP...

Страница 46: ...I environments eliminates the need to manually configure each individual storage array with a specific list of initiators and target IP addresses Instead iSNS automatically discovers manages and configures all iSCSI devices in your environment For more information on iSNS including installation and configuration see microsoft com 46 ...

Страница 47: ... policy routes I O requests in rotation to each available data path to the RAID controller module that owns the virtual disks This policy treats all paths to the RAID controller module that owns the virtual disk equally for I O activity Paths to the secondary RAID controller module are ignored until ownership changes The basic assumption for the round robin policy is that the data paths are equal ...

Страница 48: ...roller can be aggregated to provide optimal performance A host can be configured to simultaneously use the bandwidth of both the ports on a controller to access virtual disks owned by the controller The multi path failover driver that Dell provides for the MD3860i series storage array can be used to configure the storage array so that all ports are used for simultaneous I O access If the multi pat...

Страница 49: ...p the iSCSI services in Linux certain steps must be followed to maintain parallel processing between the storage array and the host server 1 Stop all I O 2 Unmount all correlated file systems 3 Stop iSCSI service by running the following command etc init d open iscsi stop 49 ...

Страница 50: ...ddress host server Subnet should be different for each NIC Default gateway iSCSI port 1 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ iSCSI port 2 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 50 ...

Страница 51: ... In 1 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port cntrl 0 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ iSCSI port 1 In 0 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ iSCSI port 1 In 1 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port cntrl 1 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 51 ...

Страница 52: ...onal sheet Host iSCSI port 1 Host iSCSI port 2 Link local IP address ___ ___ ___ ___ Link local IP address ___ ___ ___ ___ Routable IP address ___ ___ ___ ___ Routable IP address ___ ___ ___ ___ Subnet prefix ___ ___ ___ ___ Subnet prefix ___ ___ ___ ___ Gateway ___ ___ ___ ___ Gateway ___ ___ ___ ___ 52 ...

Страница 53: ...2 ____ ____ ____ ____ ____ ____ ____ ____ Router IP address ____ ____ ____ ____ ____ ____ ____ ____ iSCSI controller 1 In 0 IP address FE80 0000 0000 0000 ____ ____ ____ ____ Routable IP address 1 ____ ____ ____ ____ ____ ____ ____ ____ Routable IP address 2 ____ ____ ____ ____ ____ ____ ____ ____ Router IP address ____ ____ ____ ____ ____ ____ ____ ____ iSCSI controller 1 In 1 IP address FE80 000...

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