HP StorageWorks P4000 Series Bedienungsanleitung

HP StorageWorks

P4000 Series 1 GbE to 10 GbE Migration

Guide

Part Number: BQ891–96002

Second edition: June 2010

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Contents

About this guide ................................................................................... 5

1 Instructions for migrating bonded interfaces in a SAN cluster from 1 GbE

to 10 GbE Ethernet ............................................................................... 7

Overview ................................................................................................................................... 7

Best Practice ........................................................................................................................ 7

Bonding 10 GbE interfaces .......................................................................................................... 7

Supported bonds with 10 GbE .............................................................................................. 7

Unsupported bonds with 10 GbE ........................................................................................... 7

Migrating an existing cluster to a 10 GbE bonded configuration ....................................................... 8

Installation overview ............................................................................................................. 8

Installation prerequisites ........................................................................................................ 9

Prepare IP address worksheets ......................................................................................... 9

Put the management group into maintenance mode .......................................................... 10

Install the hardware and the software patch ........................................................................... 10

Configure the 10 GbE ports for SAN/iQ software communication using the CMC ...................... 12

Configure the 10 GbE and 10 GbE ALB bond (using eth2 and eth3) ........................................ 13

Creating the ALB bond ................................................................................................. 13

Verifying the bond ....................................................................................................... 14

Changing the VIP if required ......................................................................................... 14

Preparing your host server to be 10 GbE capable ............................................................ 14

P4000 Series 1 GbE to 10 GbE Migration Guide 3

Tables

HP StorageWorks P4000 —possible 10 GbE Ethernet bonds ........................................ 81

Storage node network configuration pre-migration ........................................................ 92

Storage node network configuration post-migration ....................................................... 93

Pre-upgrade storage node information ....................................................................... 104

During upgrade, use this storage node information ...................................................... 105

About this guide

This guide provides information about migrating bonded interfaces in an existing cluster from 1 GbE

to 10 GbE.

P4000 Series 1 GbE to 10 GbE Migration Guide 5

About this guide6

1 Instructions for migrating bonded

interfaces in a SAN cluster from 1 GbE to

10 GbE Ethernet

Overview

The 10 GbE feature option adds 10 GbE to the HP StorageWorks P4000 platforms. This is an add-on

feature to the standard 1 GbE dual Ethernet adapters built into the system boards of the P4000 storage

nodes. After the 10 GbE dual port Ethernet adapter is installed and configured, users see four Ethernet

interfaces listed in the Centralized Management Console (CMC) TCP/IP Network tab window. These

four interfaces can be bonded a number of ways.

Best Practice

We recommend bonding network interfaces for performance and failover. The best bond to use

depends on your network and SAN configuration.

Bonding 10 GbE interfaces

After installing the 10 GbE upgrade, you have a choice of supported bond configurations. Note that

not all the bond configurations which are supported by the HP LeftHand Storage Solution are supported

with the 10 GbE upgrade.

Supported bonds with 10 GbE

The P4000 with the 10 GbE feature installed and configured supports these bond types.

•Adaptive Load Balancing (ALB) bond with the two 10 GbE Ethernet NICs

•Active-Passive bond with two 10 GbE Ethernet NICs

•Active-Passive bond with 1 GbE NIC and 10 GbE NIC

•Link Aggregation Dynamic Mode (802.3ad) bond with two 10 GbE Ethernet NICs

Unsupported bonds with 10 GbE

The HP StorageWorks P4000 with the 10 GbE feature installed and configured does not support the

following bond types:

•Bonding two bonds

•ALB bond with 1 GbE NIC and 10 GbE NIC

P4000 Series 1 GbE to 10 GbE Migration Guide 7

•Link Aggregation Dynamic Mode bond with 1 GbE NIC and 10 GbE NIC

Table 1 HP StorageWorks P4000 —possible 10 GbE Ethernet bonds

SAN/iQ soft-

ware interface

eth3 (10 GbE)eth2 (10 GbE)Motherboard:Port2

(1 GbE)

Motherboard:Port1

(1 GbE)

eth2DisabledEnabledDisabledDisabled

eth2EnabledEnabledDisabledDisabled

eth3EnabledEnabledDisabledDisabled

BondALB BondALB BondDisabledDisabled

Bond802.3ad bond802.3ad bondDisabledDisabled

BondBond (Passive)Bond (Active)DisabledDisabled

BondDisabledBond (Active)DisabledBond (Passive)

BondBond (Active)DisabledDisabledBond (Passive)

BondDisabledBond (Active)Bond (Passive)Disabled

BondBond (Active)DisabledBond (Passive)Disabled

Bond-10 GbEBond-10 GbEBond-10 GbEBond-1 GbEBond-1 GbE

Migrating an existing cluster to a 10 GbE bonded configuration

When upgrading to 10 GbE HP StorageWorks P4000s that have bonded NICs and are already in

a cluster and providing storage volumes, you must follow certain steps to ensure an effective migration

to the new hardware configuration. This migration guide covers one possible bonded configuration

—the ALB bond configured with two 10 GbE interfaces as an ALB bonded pair.

Installation overview

The example below shows how to migrate existing HP StorageWorks P4000s configured with a 1

GbE ALB bond to a configuration with a two 10 GbE NICs configured with an ALB bond. For this

example, the other two Ethernet interfaces in the storage nodes are not used by the SAN/iQ software

and can be disabled.

The example below utilizes planned downtime of the entire management group and results in none

of the volumes needing to restripe data. However, all access and I/O to the volume(s) is disconnected

during this upgrade period.

A summary of the installation and migration steps follow:

1. Stop all I/O and disconnect all iSCSI sessions to volumes.

2. Shut down management group and power off all storage nodes.

3. Install 10 GbE Ethernet adapter and additional memory in each storage node.

4. Power on each storage node and install the appropriate software patch, as described in the

P4000 10 GbE Hardware Installation Instructions.

5. Configure new IP address and bonds for 10 GbE on each storage node, and change the SAN/iQ

communication IP address.

Instructions for migrating bonded interfaces in a SAN cluster from 1 GbE to 10 GbE Ethernet8

6. Change the cluster's VIP if required.

7. Reconnect iSCSI sessions and start I/O.

Installation prerequisites

Check the following two items before starting the migration:

•Have compatible VIP addresses for the 10 GbE switches that are running the 10 GbE ALB bond.

SAN/iQ software version 8.x requires each cluster to have a valid VIP address. A valid VIP address

is one that is on the same subnet as the storage nodes. This VIP address must be valid after updating

the storage nodes to the 10 GbE ALB bond.

•Ensure that all network settings (Flow Control, Frame Size (MTU)) for each NIC are consistent

across the switch, the storage node and the client. The network settings must be configured the

same on each interface before creating a bond.

Table 2 shows a summary of the network interfaces and bonds listed on the CMC TCP/IP Network

panels before installing and configuring the 10 GbE adapter. Table 3 shows a summary list of those

interfaces and bonds after installing and configuring the 10 GbE adapter.

NOTE:

The SAN/iQ communication interface in both configurations is Bond0.

Table 2 Storage node network configuration pre-migration

ModeSpeedNIC

Slave (bond0)1 GbEMotherboard:Port1

Slave (bond0)1 GbEMotherboard:Port2

Logical Failover Device (ALB)1 GbEBond type

Table 3 Storage node network configuration post-migration

ModeSpeedNIC

Disabled (Optional)1 GbEMotherboard:Port1

Disabled (Optional)1 GbEMotherboard:Port2

Active (bond0)10 GbEeth2

Active (bond0)10 GbEeth3

ALB—Bond type

Prepare IP address worksheets

Write down the following information and keep this information handy throughout the migration

process for each storage node.

P4000 Series 1 GbE to 10 GbE Migration Guide 9

In Table 4, enter information about the storage node before it is updated. In Table 5, enter the

information about the storage node you will use during the update.

Table 4 Pre-upgrade storage node information

Motherboard:Port1 IP address

Motherboard:Port2 IP address

Bond address

Cluster VIP

Table 5 During upgrade, use this storage node information

eth2 IP address to use

eth3 IP address to use

Bond0 IP address to use

Cluster VIP (if different from the cluster VIP in

table 4)

Put the management group into maintenance mode

1. Halt all I/O to the volume(s).

2. Using the iSCSI initiator, log off all the volumes attached to this cluster.

3. Right-click the management group in the navigation window and select Shutdown Management

Group to place the group into Maintenance mode. The following message opens:

4. Click Shut Down Group. A confirmation message opens.

5. Click Shut Down Group to continue the shutdown process.

6. Verify that all the storage nodes in the management group are powered OFF.

Install the hardware and the software patch

Follow the instructions in the appropriate P4000 10 GbE Hardware Installation Instructions to install

the 10 GbE network card, additional memory and apply the appropriate software patch.

Instructions for migrating bonded interfaces in a SAN cluster from 1 GbE to 10 GbE Ethernet10

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