Tip

Guidelines for implementing virtualization in your storage infrastructure

Virtualization is showing up in all layers of the storage infrastructure. However, there's still some confusion on where to embed virtualization and when to use it. This all depends on the size of the storage

    Requires Free Membership to View

infrastructure, the type of applications running in it, and the levels of control and visibility required by administrators.

Storage managers need to balance the benefits of virtualization against the complexity it brings. Let's take a look at some guidelines for implementing virtualization in your storage infrastructure:

1. Match the intelligence of your Fibre Channel (FC) storage-area network (SAN) infrastructure to your levels of server and storage virtualization.

Using VMware Inc.'s VMotion, virtual servers may move to different server hardware. But as servers move, so do their virtual initiators and targets. FC SAN switches need to recognize these changes so server multipathing and provisioning continue to function across the FC SAN when moves occur. Otherwise, administrators will need to manually make zoning and logical unit number (LUN) masking changes.

2. Partitioning should be available and configurable at all layers.

Partitioning assigns each layer of storage virtualization its own administrators, memory, network bandwidth and processing power. Partitioning helps prevent secondary applications from consuming physical resources needed by mission-critical production applications. Administrators can also make changes for test applications in one partition without the changes impacting production applications in another partition.

3. Virtualize performance-intensive application servers cautiously.

Sometimes less virtualization is better when virtualizing performance-intensive applications. Too much virtualization can make it difficult for administrators to quickly diagnose the underlying resources used by the application. Before virtualizing, administrators should verify that storage resource management (SRM) software can integrate with the specific storage virtualization software.

4. Virtualize servers and storage with low performance and utilization first.

Servers with low performance and storage utilization are those most likely to provide the highest return on your virtualization investment and to require the least amount of management. Consider virtualizing these servers using iSCSI SANs, as they can take advantage of some of the virtualization benefits inherently provided by TCP/IP.

Vendors are moving closer toward tying their storage virtualization and SRM software together. But because of the time and effort required to implement virtualization and complementary SRM software, you should deploy virtualization products gradually while keeping expectations at a modest level.

This material originally appeared in Storage magazine.


This was first published in May 2009

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.