IBM Midrange System DS4000 Series

32 IBM Midrange System Storage Hardware Guide
Figure 3-6 shows the main components of the DS5000 controller.
Figure 3-6 DS5300 controller’s main components
4 Gb/s SFP
Drive Interfaces
4 Gb/s SFP
Drive Interfaces
4 Gb/s SFP
Host Interfaces
4 Gb/s SFP
Host Interfaces
Loop
Switch
Loop
Switch
Loop
Switch
Loop
Switch
4 Gb/s
FC Chip
4 Gb/s
FC Chip
Host Interface Card
Host Interface Card
RJ45
RJ45
DB-9
Ethernet
Ethernet
Serial
Host
Card
I/F
Host
Card
I/F
Processor
Memory
Battery
Backup
DDR SDRAM
Data Cache
XOR
ASIC
Internal
Control
Bat., flash
and serial
control
USB
Flash
Control
Processor
4 Gb/s
FC Chip
4 Gb/s
FC Chip
Interconnect Board
Alternate controller
drive loops
Cache mirroring
Intel Xeon
control processor
ZIP ASIC
(XOR engine)
PCI-e 8x buses
USB flash
backup memory
Control processor
memory
Disk channel chips
Data cache
bus 17Gbps Host channel chips