114 Troubleshooting and problem solvingNOTE: Figure 77 (page 115) shows isometric pictorial representations of controller modules and expansionmodules used in 2U 24-drive Lenovo ThinkSystem enclosures. Modules are shown oriented for insertion into IOMslot A located on the enclosure rear panel.CRUs addressing high-density 5U 84-drive chassisNOTE: The 5U84 chassis is configured as an EBOD (D3284) for use with DS6200/DS4200 controllers.NOTE: Figure 77 (page 115) shows an isometric pictorial representation of the expansion module used in 5U84-drive Lenovo ThinkSystem enclosures. The expansion module is shown oriented for insertion into either IOMslot located on the D3284 enclosure rear panel.Table 28 D3284 product components for 5U 84-drive chassisItem Enclosure component description1 Disk drive in carrier (DDIC) LFF (DDICs must be installed into drawers after delivery)a) 2.5" disk with 3.5" adapter (disks of differing type/speed and storage capacity: SAS, SSD)b) 3.5" disk (disks of differing type/speed and storage capacity: SAS, SSD)2 Ear components (not customer replaceable)a) Left ear assemblyb) Right ear assembly3 Drawers for holding DDICs (included with chassis; not available separately)Top drawer accessible from enclosure front panel (empty–42 DDIC slots)Bottom drawer accessible from enclosure front panel (empty–42 DDIC slots)4 Chassis (sheet metal enclosure that is configurable as an RBOD or EBOD)5 PCBs –midplane sideplane, baseplanes (included with chassis; not available separately)6 Power supply unit (PSU) available as AC module (chassis uses two PSUs of same model type)7 Fan cooling module (FCM) (chassis uses five FCMs of same model type)8 Expansion module for storage expansion I/O (used when chassis is configured as an EBOD)a) 3-port 12Gb/s SBB expansion module9 Small form-pluggable SFP connectorsa) SFP transceiver: 8/16Gb/s FC; 10GbE iSCSI; 1Gb/s iSCSI10 Rail kit (variable attachment options)a) 5U rack mount kit, shelf, long, all HW11 Cable kit [Cable package: standard HD mini-SAS (SFF-8644) to HD mini-SAS (SFF-8644)]Cable kit [Cable package: standard HD mini-SAS (SFF-8644) to mini-SAS (SFF-8088)]Cable kit [Cable package: USB Type B; CLI (USB)]12 AC power cord compatible with AC PSU (each PSU uses a power cord)