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 Figure25, 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.
Figure25. Connecti on 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 xHDD 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