© Copyright IBM Corp. 1988, 1994, 1995, 1996, 1997, 1988, 1999, 2000, 2001 3932105 Enterprise and Versatile Storage Servers2105 Enterprise and Versatile Storage Servers2105 Enterprise Storage ServerThe Enterprise Storage Server (ESS) (commonly referred to asShark ) is a leading IBMStorage Area Network (SAN) storage solution. ESS supports critical requirements forstrategic business initiatives, such as e-business, enterprise resource planning, businessintelligence, service consolidation, and other mission-critical applications. The ESS deploysthe IBM Seascape principles as a powerful storage server with snap-in building blocks andwith universal data access.ESS builds on the rich legacy of IBM storage system solutions across the major operatingsystem platforms. Heterogeneous attachment is provided to all major server platforms,including the iSeries and AS/400e servers, S/390, Windows NT, and many varieties of Unix.The Enterprise Storage Server incorporates the capabilities of the Versatile Storage Server(VSS), such as:• Supports a wide variety of Unix and Windows NT servers, as well as iSeries, AS/400e,and Novell NetWare• Secure intranet connection for remote disk, configuration, performance, asset, andcapacity management incorporating StorWatch usability and ESS ExpertAt V5R1, the ESS supports fiber-channel attachment. Capacity ranges from 400 GB to over11 TB to provide excellent scalability. Sixteen standard configurations are offered to meetyour capacity and performance needs. Performance can be optimized to meet heterogeneousenvironment needs, such as the bandwidth required by advanced transaction processingcapabilities for both online and batch applications. Resource contention is reduced andperformance is improved by the parallel access of volumes and I/O priority queuing.The ESS architecture supports high availability requirements with redundant components.Data replication services extend access to data, while using a concurrent copy of data. Rapiddata duplication provides extensive capabilities to exploit, manage, and protect yourinformation in a 7-by-24 (7x24) environment. Availability is maximized through redundancyand non-disruptive service with a design to virtually eliminate single points-of-failure or repair.ESS is the storage of choice for users that are planning for comprehensive enterprise diskstorage consolidation and data sharing on multiple, heterogeneous servers, where combinedplatform storage requirements exceed 400 GB. It provides high-performance RAID-5, readand write cache, or the flexibility of common storage for multiple servers with differingchannel attachments.