Chapter 2. Architecture and technical overview 79
RAID 0, 10, 5, and 6 support up to six drives.
SSDs and HDDs can be used, but can never be mixed in the same disk enclosure.
To connect to the external storage, you need to connect to the FC 5887 disk drive
enclosure.
Figure 2-16 shows the topology of the RAID mode.
Figure 2-16 RAID mode with external disk drawer option
2.8.4 DVD
The DVD media bay is directly connected to the integrated SAS controller on the I/O
backplane and has a specific chip (VSES) for controlling the DVD LED and power. The VSES
appears as a separate device to the device driver and operating systems (Figure 2-13 on
page 76).
Because the integrated SAS controller is independent from the two SAS disk or SSD
controllers, it allows the DVD to be switched between multiple partitions without affecting
the assignment of disks or SSDs in the system enclosure.
I/O Planar DASD Backplane
Hard Disk 2
Hard Disk 3
SAS Port
Expander
Hard Disk 4
Hard Disk 5
Hard Disk 6
SAS Port
Expander
OpticalOpticalInt. SAS Cnt.
Hard Disk 1
Integrated
SAS
Controller
Integrated
SAS
Controller
External SAS Port
P7IOC
P7IOC
External Disk
Drawer
Battery
Battery
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