2105 Enterprise and Versatile Storage Servers394 iSeries HandbookThere are two adapters available to attach the ESS to an iSeries server – SCSI and fiber:• SCSI attachment is supported using a #6501 (SPD) adapter. In this configuration, theESS emulates a 9337-5xx drive, based on the size of the disk unit installed. OS/400V3R1 supports 4 GB and 8 GB LUNs and V4R2 supports 4 GB, 8 GB, 17 GB, and 36GB LUNs.Sixteen disk drives (LUNs) are supported per #6501, with up to a maximum of 16 #6501sfor 32 ports on the ESS.• Models F10 and F20 attach to iSeries 270 and 8xx servers using the #2766 FibreChannel DASD Controller with OS/400 V5R1. Each #2766 supports 32 LUNs. A LUNcan be 8.58 GB, 17.54 GB, 35.16 GB, 36.00 GB, or 70.56 GB.Fibre attachment is either directly to the ESS (point-to-point) or via a 3435-1RU FibreChannel Managed Hub using Fibre Channel Arbitrated Loop (FC-AL) connectivity.Switches are not supported. However, the 2109 SAN Fibre Channel Switch Models S08and S16 can be used in QuickLoop mode to attach iSeries to the ESS.Up to five iSeries servers can be on a single loop. Performance considerations apply.Refer to the RedpieceiSeries in Storage Area Networks: A Guide to Implementing FCDisk and Tape with iSeries , SG24-6220, available at: http://www.redbooks.ibm.comNote: Prior to ordering the #2766 Fibre Channel Disk Controller, read and understand theno-charge RPQ 847126 - iSeries Fibre Channel Adapter for Enterprise Storage Server.RPQ 847126 must be ordered for the #2766 to ship with the system. Configuration andinstallation considerations are discussed in the documentation shipped with the RPQ.You can find more information about the Enterprise Storage Server on the Storage SystemsDivision home page at: http://www.storage.ibm.com/2105 Versatile Storage ServerThe IBM 2105 Versatile Storage Server (VSS) is designed to provide a flexible approach tostorage centralization in support of server consolidation. By using the IBM 7133 Serial DiskSubsystem as its storage building block, VSS provides investment protection for customers ina heterogeneous processing environment. With the IBM VSS, disk storage can beconsolidated into a single, powerful system to offer many levels of advanced function.Examples include remote Web-based management, true data sharing for like servers, anddynamic capacity allocation.The Versatile Storage Server supports 7133 Models 010 and 020 and the D40 Serial DiskSubsystem containing 4.5 GB, 9.1 GB, and 18.2 GB disk drives. Disk units are grouped insimilar groups of four or eight. The drives emulate the 9337 Model 580 or 590 respectively.The VSS attaches to the iSeries server using the #6501 Tape/Disk Device Controller. The
