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Configuring EVA arrays

HP provides tools to help you configure and maintain EVA arrays. For example, intuitive Command

View EVA can be used to simplify day-to-day storage administration, allowing you to create or delete

Vdisks, create data replication groups, monitor the health of system components, and much more. For

batch operations, HP recommends using Storage System Scripting Utility (SSSU), a command-line tool

that can help you quickly deploy large EVA configurations, back them up for future deployments, and

perform advanced administrative tasks.

When configuring a large number of Vdisks for a vSphere 4.x and 5.0 implementation, such as that

described in this paper, you should configure the Vdisks to alternate between EVA controllers using

either Path A-Failover/failback or Path B-Failover/failback (see Vdisk provisioning).

Appendix A – Using SSSU to configure the EVA presents a sample script that creates multiple Vdisks,

alternates path preferences between two controllers, and presents the Vdisks to vSphere servers.

This section outlines the following options for configuring an EVA array:

 Using Command View EVA

 Running Command View EVA within a VM

 Using the HP Insight Control Storage Module for vCenter

Using Command View EVA

Command View EVA can manage an array using one of the following methods:

 Server-based management (SBM) – Command View EVA is deployed on a standalone server that

has access to the EVA storage being managed.

If desired, you can run Command View EVA within a VM, allowing you to clone this VM and use it

as a template that can be quickly redeployed as needed, with minimal reconfiguration required.

When running Command View EVA in a VM, the following modes are supported:

– Virtualized SCSI mode – The Command View EVA instance can only view the active path to LUN

0 on a single controller. This mode is enabled by default when you install Command View EVA

9.2 or later.

– VMDirectPath mode – The Command View EVA instance bypasses the virtualization layer and

can directly manage the EVA storage. This mode is supported on Command View EVA 9.3 or

later.

For more information, refer to the VMware knowledge base article, “Configuring VMDirectPath

I/O for HP Command View EVA.”

Note

While this knowledge base article indicates that VMDirectPath mode is

experimental, HP and VMware have agreed to support this feature.

 Array-based management (ABM) – For supported EVA models, Command View EVA can be

deployed on the array’s management module.

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