820 system unit
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The Imbed IOP controls C06, C05, and possibly C04 and C03.
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IOPs control IOAs in the direction of the arrows in the PCI bridge set.
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SCSI in the diagram indicates the first internal disk unit controller position.
Place IOA 2757, 2763, 2782, 4748, 4778 or 9767 in position C05. The first disk unit
controller card must be in C05 and connect the load source disk unit internal
tape and CD–ROM or DVD device.
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Two internal disk unit controllers are allowed per 820 system unit.
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A second internal disk unit controller in the system unit is only allowed when
removable cable retention mechanisms are installed.
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The second internal disk unit controller cannot be in card position C07 or C08.
16
Upgrading the System Unit from Operations Console to Twinaxial Console (5540) V5R2
