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www.hitachi.com BladeSymphony 1000 Architecture White Paper 35
A SCSI or RAID type PCI card must be installed in a PCI slot in an I/O module to act as the controller of
the storage module. A PCI card is combined with a storage module, as shown in Figure 25, by
connecting the SCSI cable from the PCI card to the SCSI connector on the same I/O module, and then
connecting the board wiring from the SCSI connector to server slot #4 to #7, where the storage module
is installed through the backplane. The logical numbers of the SCSI connectors on I/O module #0 and
#1 are defined as #0 to #1 and #2 to #3, respectively.
Figure 25. Connection configuration for HDD Modules
Bridge Bridge Bridge Bridge
SCSI Bus
(Internally connected)
Sample Configuration
SCSISCSISCSISCSI
6x HDD SCSI i/f
SCSI #
2
SCSI #3
Server chassis
6 x HDD has only one
SCSI I/F port.
Note that this port is
not connected.
Backplan
e
(Type 2)
I/O module #1 (type 2)
I/O module
#
0 (type 1)
SCSI connector # 3
SCSI connector #2
{
I/F #0I/F #1I/F #2I/F #3
#15 #14 #13 #12 #11 #10 #9 #8 #7 #6 #5 #4 #3 #2 #1 #0
Bridge Bridge Bridge Bridge
SCSI connector #0
SCSI connector #1
(1) 3x HDD Module(2) 6x HDD Module
SCSI or RAID Card