Chapter 2. Architecture and technical overview 81
Figure 2-21 shows the back view of the expansion unit.
Figure 2-21 PCI-X DDR 12X expansion drawer rear side
2.9.2 12X I/O Drawer PCIe
The 12X I/O Drawer PCIe, SFF disk (FC 5802) is a 19-inch I/O and storage drawer. It
provides a 4U (EIA units) drawer containing 10 PCIe-based I/O adapter slots and 18 SAS
hot-swap small form factor (SFF) disk bays, which can be used for either disk drives or SSD
drives. Using 900 GB disk drives, each I/O drawer provides up to 16.2 TB of storage. The
adapter slots within the I/O drawer use Gen3 blind swap cassettes and support hot-plugging
of adapter cards. The 12X I/O Drawer PCIe, No Disk (FC 5877) is the same as FC 5802
except that it does not support any disk bays.
A maximum of two 12X I/O Drawer PCIe, SFF disk drawers can be placed on the same 12X
loop. Within the same loop FC 5877 and FC 5802 can be mixed. An upgrade from a diskless
FC 5877 to FC 5802 with disk bays is not available.
Tip: The PCI-DDR 12X expansion drawer (FC 5796) is supported, but no longer orderable.
P1-C8-T3
P1-C1
P1-C2
P1-C3 P1-C4
P1-C5
E1
P1-C6
E2
12X Port 1
(P1-C7-T2)
SPCN 0
(P1-C8-T1)
SPCN 1
(P1-C8-T2)
12X Port 0
(P1-C7-T1)
C
1
C
2
C
3
C
4
C
5
C
6
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