Taipei, Taiwan, December 27th, 2005— Qsan has continuously showing its software competitive edge by introducing unprecedented value to global SMB storage market. As the latest addition to the innovative software stack of 2 major controller product lines in 2005: S series (U320 SCSI to SATAII) and P series (GbE iSCSI to SATAII), Microsoft Virtual Disk Service and Multipath I/O support are enabled via installation of respective software agents on the Windows host, which can be either Windows 2000 or Windows Server 2003. These two agents are implemented by Qsan and provided to customers as part of S60/120C and P60/120C without extra charge. The agent programs can also be re-branded for OEM customers just like the controller itself.

Brief description about these two features from Microsoft in the following:

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Windows Virtual Disk Service simplifies disk management by enabling the administrator to use a standardized storage management user interface, accessible from any Windows console, to manage both multi-vendor storage arrays and directly attached storage. This design alleviates the problem of multiple non-standardized management tools. It also enables the administrator to obtain an aggregated view of all storage, and facilitates several solutions, such as extending disk space without administrator intervention. VDS provides the administrator with the flexibility to decide how to access the standardized interface through a command line interface (CLI) or third party graphical user interface (GUI).

Multipath I/O is the ability to use more than one physical path to access a storage device, providing improved system reliability and availability via fault tolerance and/or load balancing of the I/O traffic. In the case of storage management, where the preservation of data is vital, multipath I/O provides extra support points that can protect against data loss or system failure. The introduction of Microsoft's Multipath I/O delivers a standard and interoperable path for communication between storage products and Windows Server.
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With Windows VDS, administrators are able to manage subsystems design-in S or P series controllers by standard Windows disk management tool just like the way to manage other legacy storage devices in the environment. No extra learning cycle. Established storage procedures can be easily applied to Qsan products. Based on the actual test result in Qsan lab, dual-channel throughput of S series can be increased up to 1.5 time better given the same RAID level and typical Windows disk configuration. Obviously supporting MS MPIO not only eliminates failure points in connection components but also increases the performance significantly in Windows environment.

Important Note: These two features are NOT officially certified by Microsoft yet. MPIO submission to WHQL is in progress. VDS submission will be sent later.

Qsan Technology Inc.
Qsan Technology, Inc., develops, manufactures and markets storage controllers for IP SAN. It aims to become IntelliRAID provider, IP SAN expert and SMB ILM innovator. Headquartered in Taipei Taiwan , Qsan was founded in 2004 and is privately held. Distribution partners are worldwide including Europe, the United States and Greater China Region. For more information, visit www.qsan.com.tw