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1.3 Required Components for 489184-B21 Interconnects with 3 Enclosures per Cabinet, QDR 2:1 Bandwidth (DDR1:1 BW)  Between Server Blade Enclosures and Spine Switches
The following tables indicate the required number of components for 3 server blade enclosures per cabinet at QDR 2:1 half bandwidth (DDR 1:1 full bandwidth), depending on the total number of server blade enclosures and type of Voltaire interconnect. For your interconnect and server blade configuration, see Section 1.1 to determine the potential bandwidth.
Table 1-2: 1-36 Single-Density Server Blade Enclosure Configurations Using Voltaire ISR 4036 Interconnects:  QDR 2:1 BW (DDR 1:1 BW)
Server Blade Enclosures	Control and Utility Nodes	Number of Optional 4036 Leaf Chasses to Support Control and Utility Nodes	Number of 4036 Spine Chasses	Total Number of 4036 Interconnect Chasses	Maximum Number of 4X Link Cables
1 - 4	0-24	2	1	1	36
5 - 9	0-24	2	2	2	72
10 - 18	0-24	2	4	4	144
19 - 36	0-24	2	8	8	288
Table 1-3: 1-18 Double-Density Server Blade Enclosure Configurations Using Voltaire ISR 4036 Interconnects:  QDR 2:1 BW (DDR 1:1 BW)
Server Blade Enclosures	Control and Utility Nodes	Number of Optional 4036 Leaf Chasses to Support Control and Utility Nodes	Number of 4036 Spine Chasses	Total Number of 4036 Interconnect Chasses	Maximum Number of 4X Link Cables
1 - 2	0-24	2	1	1	36
3 - 4	0-24	2	2	2	72
5 - 9	0-24	2	4	4	144
10 - 18	0-24	2	8	8	288