STEVE STURGEON
QLogic Corporation
(949)389-6268
steve.sturgeon@qlogic.com
MICHAEL ROE
QLogic Corporation
(949)389-6440
michael.roe@qlogic.com

QLogic SANbox2-64™ Switch, SANblade™ HBAs Are Cisco Qualified

SAN Products Powered by QLogic Interoperate with Cisco Storage Routers and the Cisco MDS 9000 Family of Multilayer Directors and Fabric Switches

ALISO VIEJO, Calif., June 16, 2003 -- QLogic Corp. (NASDAQ:QLGC), the company that powers storage networks, today announced that its line of SANbox2 Fibre Channel switches, including the recently announced SANbox2 64 product, and SANblade Fibre Channel host bus adapters (HBAs) have been qualified with several storage networking products from Cisco Systems, Inc.

Specifically, Cisco and QLogic have jointly qualified the QLogic Fibre Channel devices with the Cisco MDS 9000 Family of Multilayer Directors and Fabric Switches, targeted at enterprise-class storage networking deployments, as well as the Cisco SN5428-2 Storage Router, ideal for workgroups and corporate departments. These joint qualifications offer customers choice in choosing SAN switches and HBAs from both Cisco and QLogic, when connecting their storage devices and servers together across SANs. The testing was based on a specified set of interoperability criteria between designated product models of the two companies.

"As the market for SANs matures with greater vendor options, including a wider variety of fabric edge switches, customers are increasingly interested in switch interoperability with core director class products," said Bill Erdman, marketing director of storage technology alliances at Cisco. "The interoperability tests we conducted with QLogic, including the switch-to-switch tests within the Storage Network Industry Association (SNIA) lab, as well as within our qualification lab confirm that customers can deploy different vendor switches together without sacrificing any significant functionality."

"As the market for SANs matures with greater vendor options, including a wider variety of fabric edge switches, customers are increasingly interested in switch interoperability with core director class products," said Bill Erdman, marketing director of storage technology alliances at Cisco. "The interoperability tests we conducted with QLogic, including the switch-to-switch tests within the Storage Network Industry Association (SNIA) lab, as well as within our qualification lab confirm that customers can deploy different vendor switches together without sacrificing any significant functionality."

The Cisco MDS 9000 Family delivers a number of storage networking innovations to customers including multi-layer intelligence such as multi-protocol (iSCSI, Fibre Channel, and Fibre Channel over IP) support, intelligent network services, multi-application partitioning, intelligent storage services, and unified management. These services are essential to increase SAN scalability and to allow customers to realize the significant financial and operational benefits of delivering storage as a utility.

The two companies are working together through continued support for open, industry standards such as FC-SW-2, FC-GS-3 and SNMP, designed to give customers greater choices in solving their storage issues.

SANblade Fibre Channel HBAs
Both QLogic 2Gb Fibre Channel switches and HBAs have won "Editor's Choice" and "Well Connected" awards from Network Computing magazine. QLogic 2Gb HBAs offer an extensive checklist of features and benefits that is unmatched in the industry including performance of up to 80,000 Input/Output operations per second (IOPs) and native support for Sun Solaris, Microsoft® Windows NT® and Windows 2000, Novell® NetWare, Red Hat® Linux® and SuSE Linux.

SANbox2 Fibre Channel Switches
QLogic SANbox2 2Gb Fibre Channel network switches provide investment protection for current and future SAN infrastructures, establishing new standards of performance, reliability and simplicity. Available in 8-port and 16-port, slim form factors, QLogic SANbox2 switches are among the fastest, most scalable, and easiest to manage Fibre Channel switches on the market.

The QLogic SANbox2-64 Modular Fabric Switch
The SANbox2-64 is a new class of Edge switch that makes deploying and scaling a SAN much easier and more cost-effective. Its dense, bladed architecture allows SAN architects to easily scale from 16 ports to 64 ports in just 4U (7") of rack space. In addition, the SANbox2-64 modular fabric switch offers redundancy and hot-swap capabilities typically found only in much more expensive Director switches.

Powered by QLogic
Over 40 million QLogic products have shipped inside servers, workstations, RAID subsystems, tape libraries, disk and tape drives, delivered to small, medium and large enterprises around the world. Powering solutions from leading companies like Cisco, Dell, EMC, Fujitsu, Hitachi, HP, IBM, Network Appliance, Quantum, Sony, StorageTek and Sun, the broad line of QLogic controller chips, host bus adapters, network switches and management software move data from storage devices through the network fabric to servers. A member of the S&P 500 and NASDAQ 100, QLogic was recently named to Forbes' Best 200 Small Companies for the fourth consecutive year and was named to Fortune's 100 Fastest Growing Companies list for the third consecutive year. For more information visit www.qlogic.com.

Note: All QLogic-issued press releases appear on the company's web site (www.qlogic.com). Any announcement that does not appear on the QLogic web site has not been issued by QLogic.

Disclaimer- Forward Looking Statements
With the exception of historical information, the statements set forth above include forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied in the forward-looking statements. QLogic wishes to advise readers that these potential risks and uncertainties relate to, but are not limited to, in no particular order: the introduction of new and changing technologies in our industry and customer acceptance of those technologies; a change in semiconductor foundry capacity or conditions; fluctuations in the growth of I/O markets; fluctuations or cancellations in orders from OEM customers; QLogic's ability to compete effectively with other companies; cancellation of OEM products associated with design wins; and fluctuations in our operating results and our stock price.

More detailed information on these and additional factors which could affect QLogic's operating and financial results are described in QLogic's Forms 10-Q, 10-K and other reports, filed or to be filed with the Securities and Exchange Commission. QLogic urges all interested parties to read these reports to gain a better understanding of the many business and other risks that QLogic faces. Additionally, QLogic undertakes no obligation to publicly release the results of any revisions to these forward-looking statements, which may be made to reflect events or circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events.

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